STMICROELECTRONICS STLC5465B


STLC5465B
MULTI-HDLC WITH n x 64 SWITCHING MATRIX ASSOCIATED
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32 TxHDLCs WITH BROADCASTING CAPABILITY AND/OR CSMA/CR FUNCTION WITH
AUTOMATIC RESTART IN CASE OF TX
FRAME ABORT
32 RxHDLCs INCLUDING ADDRESS RECOGNITION
16 COMMAND/INDICATE CHANNELS (4 OR
6-BIT PRIMITIVE)
16 MONITOR CHANNELS PROCESSED IN
ACCORDANCE WITH GCI OR V*
DESCRIPTION
The STLC5465B is a Subscriberline interfacecard
controller for Central Office, Central Exchange,
NT2 and PBX capable of handling :
- 16 U Interfaces or
- 2 Megabits line interface cards or
- 16 SLICs (Plain Old Telephone Service) or
- Mixed analogue and digital Interfaces (SLICs or
U Interfaces) or
- 16 S Interfaces
- Switching Network with centralized processing
256 x 256 SWITCHING MATRIX WITHOUT
BLOCKING AND WITH TIME SLOT SEQUENCE INTEGRITY AND LOOPBACK PER
BIDIRECTIONAL CONNECTION
DMA CONTROLLER FOR 32 Tx CHANNELS
AND 32 Rx CHANNELS
HDLCs AND DMA CONTROLLER ARE CAPABLE OF HANDLING A MIX OF LAPD, LAPB,
SS7, CAS AND PROPRIETARY SIGNALLINGS
EXTERNAL SHARED MEMORY ACCESS BETWEEN DMA CONTROLLER AND MICROPROCESSOR
SINGLE MEMORY SHARED BETWEEN
n x MULTI-HDLCs AND SINGLE MICROPROCESSOR ALLOWS TO HANDLE n x 32
CHANNELS
BUS ARBITRATION
INTERFACE FOR VARIOUS 8,16 OR 32 BIT
MICROPROCESSORS
PQFP160
(Plastic Quad Flat Pack)
ORDERING NUMBER : STLC5465B
RAM CONTROLLER ALLOWS TO INTERFACE UP TO :
-16 MEGABYTES OF DYNAMIC RAM OR
-1 MEGABYTE OF STATIC RAM
INTERRUPT CONTROLLER TO STORE
AUTOMATICALLY EVENTS IN SHARED
MEMORY
PQFP160 PACKAGE
BOUNDARY SCAN FOR TEST FACILITY
November 1999
1/101
STLC5465B
TABLE OF CONTENTS
I - PIN INFORMATION . . . . . . . . . . . . . . . . . . .
I.1 - Pin Connections . . . . . . . . . . . . . . . . . .
I.2 - Pin Description . . . . . . . . . . . . . . . . . . .
I.3 - Pin Definition . . . . . . . . . . . . . . . . . . . .
I.3.1 - Input Pin Definition . . . . . . . . . . . . . . . .
I.3.2 - Output Pin Definition . . . . . . . . . . . . . . .
I.3.3 - Input/OutputPin Definition . . . . . . . . . . . .
II - BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . .
III - FUNCTIONAL DESCRIPTION . . . . . . . . . . . . .
III.1 - The Switching Matrix N x 64 KBits/S . . . . . . .
III.1.1 - Function Description . . . . . . . . . . . . . .
III.1.2 - Architecture of the Matrix . . . . . . . . . . . .
III.1.3 - Connection Function . . . . . . . . . . . . . .
III.1.4 - Loop Back Function . . . . . . . . . . . . . . .
III.1.5 - Delay through the Matrix . . . . . . . . . . . .
III.1.5.1 - Variable Delay Mode . . . . . . . . . . . . .
III.1.5.2 - Sequence Integrity Mode . . . . . . . . . . .
III.1.6 - Connection Memory . . . . . . . . . . . . . . .
III.1.6.1 - Description . . . . . . . . . . . . . . . . . .
III.1.6.2 - Access to Connection Memory . . . . . . . .
III.1.6.3 - Access to Data Memory . . . . . . . . . . . .
III.1.6.4 - Switching at 32 Kbit/s . . . . . . . . . . . . .
III.1.6.5 - Switching at 16 kbit/s . . . . . . . . . . . . .
III.2 - HDLC Controller . . . . . . . . . . . . . . . . . .
III.2.1 - Function Description . . . . . . . . . . . . . .
III.2.1.1 - Format of the HDLC Frame . . . . . . . . . .
III.2.1.2 - Composition of an HDLC Frame . . . . . . .
III.2.1.3 - Description and Functions of the HDLC Bytes
III.2.2 - CSMA/CR Capability . . . . . . . . . . . . . .
III.2.3 - Time Slot Assigner Memory . . . . . . . . . . .
III.2.4 - Data Storage Structure . . . . . . . . . . . . .
III.2.4.1 - Reception . . . . . . . . . . . . . . . . . . .
III.2.4.2 - Transmission . . . . . . . . . . . . . . . . .
III.2.4.3 - Frame Relay . . . . . . . . . . . . . . . . .
III.2.5 - Transparent Modes . . . . . . . . . . . . . . .
III.2.6 - Command of the HDLC Channels . . . . . . .
III.2.6.1 - Reception Control . . . . . . . . . . . . . . .
III.2.6.2 - Transmission Control . . . . . . . . . . . . .
III.3 - C/I and Monitor . . . . . . . . . . . . . . . . . .
III.3.1 - Function Description . . . . . . . . . . . . . .
III.3.2 - GCI and V* Protocol . . . . . . . . . . . . . . .
III.3.3 - Structure of the Treatment . . . . . . . . . . .
2/101
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STLC5465B
TABLE OF CONTENTS (continued)
III - FUNCTIONAL DESCRIPTION (continued)
III.3.4 - CI and Monitor Channel Configuration . . . . . . . . . . . . . . .
III.3.5 - CI and Monitor Transmission/Reception Command . . . . . . . .
III.4 - Microprocessor Interface . . . . . . . . . . . . . . . . . . . . . . .
III.4.1 - Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.4.2 - Exchange with the shared memory . . . . . . . . . . . . . . . . .
III.4.2.1 - Write FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.4.2.2 - Read Fetch Memory . . . . . . . . . . . . . . . . . . . . . . .
III.4.3 - Definition of the Interface for the different microprocessors . . . . .
III.5 - Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.5.1 - Function Description . . . . . . . . . . . . . . . . . . . . . . . .
III.5.2 - Choice of memory versus microprocessor and capacity required .
III.5.3 - Memory Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.5.4 - SRAM interface . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.5.5 - DRAM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.5.4.2 - 512K x n SRAM . . . . . . . . . . . . . . . . . . . . . . . . . .
III.5.5.2 - 1M x n DRAM Signals . . . . . . . . . . . . . . . . . . . . . . .
III.5.5.3 - 4M x n DRAM Signals . . . . . . . . . . . . . . . . . . . . . . .
III.6 - Bus Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.7 - Clock Selection and Time Synchronization . . . . . . . . . . . . . .
III.7.1 - Clock Distribution Selection and Supervision . . . . . . . . . . . .
III.7.2 - VCXO Frequency Synchronization . . . . . . . . . . . . . . . . .
III.8 - Interrupt Controller . . . . . . . . . . . . . . . . . . . . . . . . . .
III.8.1 - Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.8.2 - Operating Interrupts (INT0 Pin) . . . . . . . . . . . . . . . . . . .
III.8.3 - Time Base Interrupts (INT1 Pin) . . . . . . . . . . . . . . . . . .
III.8.4 - Emergency Interrupts (WDO Pin) . . . . . . . . . . . . . . . . . .
III.8.5 - Interrupt Queues . . . . . . . . . . . . . . . . . . . . . . . . . .
III.9 - Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.10 - Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III.11 - Boundary Scan . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV - DC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV.1 - Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . .
IV.2 - Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV.3 - Recommended DC Operating Conditions . . . . . . . . . . . . . .
IV.4 - TTL Input DC Electrical Characteristics . . . . . . . . . . . . . . . .
IV.5 - CMOS Output DC Electrical Characteristics . . . . . . . . . . . . .
IV.6 - Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V - CLOCK TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.1 - Synchronization Signals delivered by the system . . . . . . . . . . .
V.2 - TDM Synchronization . . . . . . . . . . . . . . . . . . . . . . . . .
V.3 - GCI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.4 - V* Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3/101
STLC5465B
TABLE OF CONTENTS (continued)
V1 - MEMORY TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . .
VI.1 - Dynamic Memories . . . . . . . . . . . . . . . . . . . . . . . .
VI.2 - Static Memories . . . . . . . . . . . . . . . . . . . . . . . . . .
VII - MICROPROCESSOR TIMING . . . . . . . . . . . . . . . . . . . . .
VII.1 - ST9 Family MOD0=1, MOD1=0, MOD2=0 . . . . . . . . . . . .
VII.2 - ST10/C16x mult. A/D, MOD0 = 1, MOD1 = 0, MOD2 = 1 . . . .
VII.3 - ST10/C16x demult. A/D, MOD0 = 1, MOD1 = 0, MOD2 = 1 . . .
VII.4 - 80C188 MOD0=1, MOD1=1, MOD2=0 . . . . . . . . . . . . . .
VII.5 - 80C186 MOD0=1, MOD1=1, MOD2=1 . . . . . . . . . . . . . .
VII.6 - 68000 MOD0=0, MOD1=0, MOD2=1 . . . . . . . . . . . . . .
VII.7 - 68020 MOD0=0, MOD1=0, MOD2=0 . . . . . . . . . . . . . . .
VII.8 - Token Ring Timing . . . . . . . . . . . . . . . . . . . . . . . .
VII.9 - Master Clock Timing . . . . . . . . . . . . . . . . . . . . . . .
VIII - INTERNAL REGISTERS . . . . . . . . . . . . . . . . . . . . . . .
VIII.1 - Identification and Dynamic Command Register - IDCR (00)H . .
VIII.2 - General Configuration - GCR (02)H . . . . . . . . . . . . . . .
VIII.3 - Input Multiplex Configuration Register 0 - IMCR0 (04)H . . . .
VIII.4 - Input Multiplex Configuration Register 1 - IMCR1 (06)H . . . .
VIII.5 - Output Multiplex Configuration Register 0 - OMCR0 (08)H . . .
VIII.6 - Output Multiplex Configuration Register 1 - OMCR1 (0A)H . . .
VIII.7 - Switching Matrix Configuration Register - SMCR (0C)H . . . .
VIII.8 - Connection Memory Data Register - CMDR (0E)H . . . . . . .
VIII.9 - Connection Memory Address Register - CMAR (10)H . . . . .
VIII.10 - Sequence Fault Counter Register - SFCR (12)H . . . . . . .
VIII.11 - Time Slot Assigner Address Register - TAAR (14)H . . . . . .
VIII.12 - Time Slot Assigner Data Register - TADR (16)H . . . . . . .
VIII.13 - HDLC Transmit Command Register - HTCR (18)H . . . . . .
VIII.14 - HDLC Receive Command Register - HRCR (1A)H . . . . . .
VIII.15 - Address Field Recognition Address Register - AFRAR (1C)H .
VIII.16 - Address Field Recognition Data Register - AFRDR (1E)H . . .
VIII.17 - Fill Character Register - FCR (20)H . . . . . . . . . . . . . .
VIII.18 - GCI Channels Definition Register 0 - GCIR0 (22)H . . . . . .
VIII.19 - GCI Channels Definition Register 1 - GCIR1 (24)H . . . . . .
VIII.20 - GCI Channels Definition Register 2 - GCIR2 (26)H . . . . . .
VIII.21 - GCI Channels Definition Register 3 - GCIR3 (28)H . . . . . .
VIII.22 - Transmit Command / Indicate Register - TCIR (2A)H . . . . .
Transmit Command/Indicate Register (after reading) . . . . .
VIII.23 - Transmit Monitor Address Register - TMAR (2C)H . . . . . .
Transmit Monitor Address Register (after reading) . . . . . . .
VIII.24 - Transmit Monitor Data Register - TMDR (2E)H . . . . . . . .
VIII.25 - Transmit Monitor Interrupt Register - TMIR (30)H . . . . . . .
VIII.26 - Memory Interface Configuration Register - MICR (32)H . . . .
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4/101
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. . 49
. . 49
. . 51
. . 53
. . 53
. . 55
. . 57
. . 59
. . 61
. . 63
. . 65
. . 67
. . 67
. . 68
. . 68
. . 68
. . 70
. . 70
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. . 87
. . 87
. . 88
. . 88
. . 88
. . 89
STLC5465B
TABLE OF CONTENTS (continued)
VIII - INTERNAL REGISTERS (continued)
VIII.27 - Initiate Block Address Register - IBAR (34)H . . . .
VIII.28 - Interrupt Queue Size Register - IQSR (36)H . . . . .
VIII.29 - Interrupt Register - IR (38)H . . . . . . . . . . . . .
VIII.30 - Interrupt Mask Register - IMR (3A)H . . . . . . . . .
VIII.31 - Timer Register - TIMR (3C)H . . . . . . . . . . . .
VIII.32 - Test Register - TR (3E)H . . . . . . . . . . . . . . .
IX - EXTERNAL REGISTERS . . . . . . . . . . . . . . . . . . .
IX.1 - Initialization Block in External Memory . . . . . . . . .
IX.2 - Receive Descriptor . . . . . . . . . . . . . . . . . . .
IX.2.1 - Bits written by the Microprocessor only . . . . . . . .
IX.2.2 - Bits written by the Rx DMAC only . . . . . . . . . . .
IX.2.3 - Receive Buffer . . . . . . . . . . . . . . . . . . . .
IX.3 - Transmit Descriptor . . . . . . . . . . . . . . . . . . .
IX.3.1 - Bits written by the Microprocessor only . . . . . . . .
IX.3.2 - Bits written by the DMAC only . . . . . . . . . . . .
IX.3.3 - Transmit Buffer . . . . . . . . . . . . . . . . . . . .
IX.4 - Receive & Transmit HDLC Frame Interrupt . . . . . . .
IX.5 - Receive Command / Indicate Interrupt . . . . . . . . .
IX.5.1 - Receive Command / Indicate Interrupt when TSV = 0
IX.5.2 - Receive Command / Indicate Interrupt when TSV = 1
IX.6 - Receive Monitor Interrupt . . . . . . . . . . . . . . . .
IX.6.1 - Receive Monitor Interrupt when TSV = 0 . . . . . . .
IX.6.2 - Receive Monitor Interrupt when TSV = 1 . . . . . . .
X - PQFP160 PACKAGE MECHANICAL DATA . . . . . . . . .
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5/101
STLC5465B
LIST OF FIGURES
I - PIN INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . .
II - BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1 : General Block Diagram . . . . . . . . . . . . . . . . . .
III - FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . .
Figure 2 : Switching Matrix Data Path . . . . . . . . . . . . . . . .
Figure 3 : Unidirectional and Bidirectional Connections . . . . . . .
Figure 4 : Loop Back . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5 : Variable Delay through the matrix with ITDM = 1 . . . . .
Figure 6 : Variable Delay through the matrix with ITDM = 0 . . . . .
Figure 7 : Constant Delay through the matrix with SI = 1 . . . . . . .
Figure 8: Downstream Switching at 32kb/s . . . . . . . . . . . . . .
Figure 9: Upstream Switching at 32kb/s . . . . . . . . . . . . . . .
Figure 10: Upstream and Downstream Switching at 16kb/s . . . . .
Figure 11 : HDLC and DMA Controller Block Diagram . . . . . . . .
Figure 12 : Structure of the Receive Circular Queue . . . . . . . . .
Figure 13 : Structure of the Transmit Circular Queue . . . . . . . .
Figure 14 : D, C/I and Monitor Channel Path . . . . . . . . . . . . .
Figure 15: GCI channel to/from ISDN Channel . . . . . . . . . . . .
Figure 16: From GCI Channels to ISDN Channels . . . . . . . . . .
Figure 17: From ISDN channels to GCI Channels . . . . . . . . . .
Figure 17.1: Write FIFO and Fetch Memories . . . . . . . . . . . .
Figure 18 : Multi-HDLC connected to µP with multiplexed buses . .
Figure 19 : Multi-HDLC connected to µP with non-multiplexed buses
Figure 20 : Microprocessor Interface for INTEL 80C188 . . . . . . .
Figure 21 : Microprocessor Interface for INTEL 80C186 . . . . . . .
Figure 22 : Microprocessor Interface for MOTOROLA 68000 . . . .
Figure 23 : Microprocessor Interface for MOTOROLA 68020 . . . .
Figure 24 : Microprocessor Interface for ST9 . . . . . . . . . . . . .
Figure 25 : n x 128K x 16 SRAM Memory Organization . . . . . . .
Figure 26 : 512K x 8 SRAM Circuit Memory Organization . . . . . .
Figure 27 : 256K x 16 DRAM Circuit Organization . . . . . . . . . .
Figure 28 : 1M x 16 DRAM Circuit Organization . . . . . . . . . . .
Figure 29 : 4M x 16 DRAM Circuit Organization . . . . . . . . . . .
Figure 30 : Chain of n Multi-HDLC Components . . . . . . . . . . .
Figure 31 : MHDLC Clock Generation . . . . . . . . . . . . . . . .
Figure 32 : VCXO Frequency Synchronization . . . . . . . . . . . .
Figure 33 : The Three Circular Interrupt Memories . . . . . . . . . .
IV - DC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . .
V - CLOCK TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 34 : Clocks received and delivered by the Multi-HDLC . . . .
Figure 35 : Synchronization Signals received by the Multi-HDLC . .
Figure 36 : GCI Synchro Signal delivered by the Multi-HDLC . . . .
Figure 37 : V* Synchronization Signal delivered by the Multi-HDLC .
6/101
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. . . 8
. . . 14
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. . . 18
. . . 19
. . . 20
. . . 22
. . . 23
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. . . 43
. . . 44
. . . 45
. . . 45
. . . 46
. . . 47
. . . 48
STLC5465B
LIST OF FIGURES (continued)
VI - MEMORY TIMING . . . . . . . . . . . . . . . . . . . . . . . .
Figure 38 : Dynamic Memory Read Signals from the Multi-HDLC
Figure 39 : Dynamic Memory Write Signals from the Multi-HDLC
Figure 40 : Static Memory Read Signals from the Multi-HDLC . .
Figure 41 : Static Memory Write Signals from the Multi-HDLC . .
Figure 42 : ST9 Read Cycle . . . . . . . . . . . . . . . . . . .
VII - MICROPROCESSOR TIMING . . . . . . . . . . . . . . . . . .
Figure 43 : ST9 Write Cycle . . . . . . . . . . . . . . . . . . .
Figure 44 : ST10 (C16x) Read Cycle; Multiplexed A/D . . . . . .
Figure 45 : ST10 (C16x) Write Cycle; Multiplexed A/D . . . . . .
Figure 46 : ST10 (C16x) Read Cycle; Demultiplexed A/D . . . .
Figure 47 : ST10 (C16x) Write Cycle; Demultiplexed A/D . . . .
Figure 48 : 80C188 Read Cycle . . . . . . . . . . . . . . . . .
Figure 49 : 80C188 Write Cycle . . . . . . . . . . . . . . . . .
Figure 50 : 80C186 Read Cycle . . . . . . . . . . . . . . . . .
Figure 51 : 80C186 Write Cycle . . . . . . . . . . . . . . . . .
Figure 52 : 68000 Read Cycle . . . . . . . . . . . . . . . . . .
Figure 53 : 68000 Write Cycle . . . . . . . . . . . . . . . . . .
Figure 54 : 68020 Read Cycle . . . . . . . . . . . . . . . . . .
Figure 55 : 68020 Write Cycle . . . . . . . . . . . . . . . . . .
Figure 56 : Token Ring . . . . . . . . . . . . . . . . . . . . . .
Figure 57 : Master Clock . . . . . . . . . . . . . . . . . . . . .
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. 49
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7/101
STLC5465B
I - PIN INFORMATION
DM0
ADM14
ADM13
ADM12
ADM11
ADM10
VSS
VDD
ADM9
ADM8
ADM7
ADM6
ADM5
ADM4
ADM3
ADM2
ADM1
ADM0
VSS
VDD
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
D2
93
29
VDD
D1
92
30
VSS
D0
91
31
DOUT0
VSS
90
32
DOUT1
VDD
89
33
DOUT2
A23/ADM18
88
34
DOUT3
A22/ADM17
87
35
DOUT4
A21/ADM16
86
36
DOUT5
A20/ADM15
85
37
DOUT6
A19
84
38
DOUT7
A18
83
39
NDIS
A17
82
40
NTRST
A16
81
8/101
80
DIN8
A15/AD15
94
28
79
D3
A14/AD14
DIN7
78
95
27
A13/AD13
D4
77
DIN6
A12/AD12
96
26
76
D5
A11/AD11
DIN5
75
97
25
A10/AD10
98
D6
74
D7
DIN4
VSS
DIN3
24
73
23
VDD
99
72
D8
A9/AD9
DIN2
71
100
22
A8/AD8
D9
70
DIN1
A7/AD7
101
21
69
D10
A6/AD6
DIN0
68
102
20
A5/AD5
D11
67
PSS
A4/AD4
103
19
66
D12
A3/AD3
FSCV
65
104
18
A2/AD2
D13
64
FSCG
A1/AD1
105
17
63
D14
A0/AD0
FS
62
106
16
VSS
D15
61
VSS
VDD
107
15
60
VDD
MOD2
VDD
59
108
14
MOD1
VSS
58
FRAMEB
57
109
13
MOD0
TRI
NDS/NRD
FRAMEA
56
110
12
R/W / NWR
TRO
55
CLOCKB
NAS/ALE
111
11
54
NWE
READY
CLOCKA
53
112
10
NDTACK
NOE
52
DCLK
NBHE/NUDS
113
9
51
NRAS0/NCE0
NLDS
VCXO OUT
50
114
8
INT1
NCAS0/NCE1
49
VCXO IN
INT0
115
7
48
NRAS1/NCE2
NCS1
EC
47
116
6
NCS0
NCAS1/NCE3
46
CB
VSS
117
5
45
NRAS2/NCE4
44
WDO
VDD
118
4
TCK
NCE5
43
XTAL2
TDO
119
3
42
120
NRAS3/NCE6
41
NCE7
XTAL1
TDI
NRESET
2
TMS
1
5464-01.EPS
DM1
140
DM5
147
DM2
DM6
148
141
DM7
149
DM3
DM8
150
142
DM9
151
DM4
DM10
152
143
DM11
153
144
DM12
154
VSS
DM13
155
VDD
DM14
156
145
DM15
157
146
VSS
VDD
158
NTEST
159
160
I.1 - Pin Connections
STLC5465B
I - PIN INFORMATION (continued)
I.2 - Pin Description
Pin N°
Symbol
Type
Function
POWER PINS (all the power and ground pins must be connected)
14
15
VDD1
VSS1
Power
Ground
DC supply
DC ground
29
30
45
VDD2
VSS2
VDD3
Power
Ground
Power
DC supply
DC ground
DC supply
46
61
62
VSS3
VDD4
VSS4
Ground
Power
Ground
DC ground
DC supply
DC ground
73
74
89
VDD5
VSS5
VDD6
Power
Ground
Power
DC supply
DC ground
DC supply
90
107
108
VSS6
VDD7
VSS7
Ground
Power
Ground
DC ground
DC supply
DC ground
121
122
133
VDD8
VSS8
VDD9
Power
Ground
Power
DC supply
DC ground
DC supply
134
145
VSS9
VDD10
Ground
Power
DC ground
DC supply
146
158
159
VSS10
VDD11
VSS11
Ground
Power
Ground
DC ground
DC supply
DC ground (Total 22)
2
XTAL1
I
Crystal 1. A clock pulse at fMin. = 32000kHz can be applied to this input (or one pin
of two crystal pins) with : -50.10-6 < ∆f < +50.10-6.
3
XTAL2
O
7
VCXO IN
I3
CLOCKS
8
VCXO OUT
O4
Crystal 2. If the internal crystal oscillator is used, the second crystal pin is applied
to this output.
VCXO input signal. This signal is compared to clock A(or B) selected inside the
Multi-HDLC.
VCXO error signal. This pin delivers the result of the comparison.
10
11
12
CLOCKA
CLOCKB
FRAMEA
I3
I3
I3
Input Clock A (4096kHz or 8192kHz)
Input Clock B (4096kHz or 8192kHz)
Clock A at 8kHz
13
9
FRAMEB
DCLK
I3
O8
17
18
FSCG
FSCV*
O8
O8
Clock B at 8kHz
Data Clock issued from Input Clock A (or B). This clock is delivered by the circuit
at 4096kHz (or 2048kHz). DOUT0/7 are transmitted on the rising edge of thissignal.
DIN0/7 are sampled on the falling edge of this signal.
Frame synchronization for GCI at 8kHz. This clock is issued from FRAME A (or B).
Frame synchronization for V Star at 8kHz
16
19
FS
PSS
I3
O8
Frame synchronization.This signal synchronizes DIN0/7 and DOUT0/7.
Programmable synchronization Signal. The PS bit of connection memory is read
in real time.
Type : I1 = Input TTL ;
I2 = I1 + Pull-up ;
O4 = Output CMOS 4mA ;
O4T = O4 + Tristate ;
O8D = Output CMOS 8mA, Open Drain ;
O8T = Output CMOS 8mA, Tristate
I1 and I3 must be connected to VDD and VSS if not used
I3 = I1 + Hysteresis ;
I4 = I3 + Pull-up ;
O8 = Output CMOS 8mA, ”1” and ”0” at Low Impedance ;
O8DT = Output CMOS 8mA, Open Drain or Tristate ;
9/101
STLC5465B
I - PIN INFORMATION (continued)
I.2 - Pin Description (continued)
Pin N°
Symbol
Type
Function
TIME DIVISION MULTIPLEXES (TDM)
20
DIN0
I1
TDM0 Data Input 0
21
DIN1
I1
TDM1 Data Input 1
22
DIN2
I1
TDM2 Data Input 2
23
DIN3
I1
TDM3 Data Input 3
24
DIN4
I1
TDM4 Data Input 4
25
DIN5
I1
TDM5 Data Input 5
26
DIN6
I1
TDM6 Data Input 6
27
DIN7
I1
TDM7 Data Input 7
TDM8 Data Input 8
28
DIN8
I1
31
DOUT0
O8DT
TDM0 Data Output 0
32
DOUT1
O8DT
TDM1 Data Output 1
33
DOUT2
O8DT
TDM2 Data Output 2
34
DOUT3
O8DT
TDM3 Data Output 3
35
DOUT4
O8DT
TDM4 Data Output 4
36
DOUT5
O8DT
TDM5 Data Output 5
37
DOUT6
O8DT
TDM6 Data Output 6
38
DOUT7
O8DT
39
NDIS
I1
5
CB
O8D
6
EC
I1
Echo
TDM7 Data Output 7
DOUT 0/7 Not Disable. When this pin is at 0V, the Data Output 0/7 are at high
impedance. Wired at VDD if not used.
Contention Bus for CSMA/CR
BOUDARY SCAN
40
NTRST
I4
Reset for boundary scan
41
TMS
I2
Mode Selection for boundary scan
42
TDI
I2
Input Data for boundary scan
43
TDO
O4
Output Data for boundary scan
44
TCK
I2
Clock for boundary scan
MICROPROCESSOR INTERFACE
58
MOD0
I1
1
1
0
0
1
1
0
59
MOD1
I1
1
1
0
0
0
0
1
60
MOD2
I1
0
1
1
0
0
1
1
1
NRESET
I3
Circuit Reset
47
NCS0
I3
Chip Select 0 : internal registers are selected
48
NCS1
I3
Chip Select 1 : external memory is selected
49
INT0
O4
Interrupt generated by HDLC, RxC/I or RxMON. Active high.
50
INT1
O4
Interrupt1.This pin goes to 5V when the selected clock A (or B) has disappeared ;
250µs after reset this pin goes to 5V also if clock A is not present.
4
WDO
O4
Watch Dog Output.This pin goes to 5V during 1ms when the microprocessor has not
reset the Watch Dog during the programmable time.
80C188 80C186 68000 68020 ST9
Type : I1 = Input TTL ;
I2 = I1 + Pull-up ;
O4 = Output CMOS 4mA ;
O4T = O4 + Tristate ;
O8D = Output CMOS 8mA, Open Drain ;
O8T = Output CMOS 8mA, Tristate
10/101
ST10m ST10Nm
I3 = I1 + Hysteresis ;
I4 = I3 + Pull-up ;
O8 = Output CMOS 8mA, ”1” and ”0” at Low Impedance ;
O8DT = Output CMOS 8mA, Open Drain or Tristate ;
STLC5465B
I - PIN INFORMATION (continued)
I.2 - Pin Description (continued)
Pin N°
Symbol
Type
Function
MICROPROCESSOR INTERFACE (continued)
51
52
SIZE0/NLDS
SIZE1/NBHE/NUDS
I3
I3
Transfer Size0 (68020)/Lower Data Strobe (68000)
Transfer Size1 (68020)/Bus High Enable (Intel) / Upper Data Strobe (68000)
53
NDSACK0/NDTACK
O8T
54
NDSACK1/READY
O8T
55
NAS/ALE
I3
Data Strobe, Acknowledge and Size0 (68020)/Data Transfer Acknowledge
(68000)
Data Strobe, Acknowledge and Size0 (68020)/Data Transfer Acknowledge
(Intel)
Address Strobe(Motorola) / Addresss Latch Enable(Intel)
56
R/W / NWR
I3
Read/Write (Motorola / Write(Intel)
57
63
64
NDS/NRD
A0/AD0
A1/AD1
I3
I/O
I/O
Data Strobe (Motorola 68020); at Vdd for 68000/Read Data (Intel)
Address bit 0 (Motorola 68020); at Vdd for 68000 / Address/Data bit 0 (Intel)
Address bit 1 (Motorola) / Address/Data bit 1 (Intel)
65
66
67
A2/AD2
A3/AD3
A4/AD4
I/O
I/O
I/O
Address bit 2 (Motorola) / Address/Data bit 2 (Intel)
Address bit 3 (Motorola) / Address/Data bit 3 (Intel)
Address bit 4 (Motorola) / Address/Data bit 4 (Intel)
68
69
70
A5/AD5
A6/AD6
A7/AD7
I/O
I/O
I/O
Address bit 5 (Motorola) / Address/Data bit 5 (Intel)
Address bit 6 (Motorola) / Address/Data bit 6 (Intel)
Address bit 7 (Motorola) / Address/Data bit 7 (Intel)
71
72
75
A8/AD8
A9/AD9
A10/AD10
I/O
I/O
I/O
Address bit 8 (Motorola) / Address/Data bit 8 (Intel)
Address bit 9 (Motorola) / Address/Data bit 9 (Intel)
Address bit 10 (Motorola) / Address/Data bit 10 (Intel)
76
77
78
A11/AD11
A12/AD12
A13/AD13
I/O
I/O
I/O
Address bit 11 (Motorola) / Address/Data bit 11 (Intel)
Address bit 12 (Motorola) / Address/Data bit 12 (Intel)
Address bit 13 (Motorola) / Address/Data bit 13 (Intel)
79
80
81
A14/AD14
A15/AD15
A16
I/O
I/O
I1
Address bit14 (Motorola) / Address/Data bit 14 (Intel)
Address bit15 (Motorola) / Address/Data bit 15 (Intel)
Address bit16 (Motorola) / Address bit 16 (Intel)
82
83
84
A17
A18
A19
I1
I1
I1
Address bit17 (Motorola) / Address bit 17 (Intel)
Address bit18 (Motorola) / Address bit 18 (Intel)
Address bit19 (Motorola) / Address bit 19 (Intel)
85
86
A20/ADM15
A21/ADM16
I/O
I/O
Address bit 20 from µP (input) / Address bit 15 for SRAM (output)
Address bit 21 from µP (input) / Address bit 16 for SRAM (output)
87
88
91
A22/ADM17
A23/ADM18
DO
I/O
I/O
I/O
Address bit 22 from µP (input) / Address bit 17 for SRAM (output)
Address bit 23 from µP (input) / Address bit 18 for SRAM (output)
Data bit 0 for µP if not multiplexed (see Note 1).
92
93
94
D1
D2
D3
I/O
I/O
I/O
Data bit 1 for µP if not multiplexed
Data bit 2 for µP if not multiplexed
Data bit 3 for µP if not multiplexed
95
96
D4
D5
I/O
I/O
Data bit 4 for µP if not multiplexed
Data bit 5 for µP if not multiplexed
97
98
99
D6
D7
D8
I/O
I/O
I/O
Data bit 6 for µP if not multiplexed
Data bit 7 for µP if not multiplexed
Data bit 8 for µP if not multiplexed
Type : I1 = Input TTL ;
I2 = I1 + Pull-up ;
O4 = Output CMOS 4mA ;
O4T = O4 + Tristate ;
O8D = Output CMOS 8mA, Open Drain ;
O8T = Output CMOS 8mA, Tristate
I3 = I1 + Hysteresis ;
I4 = I3 + Pull-up ;
O8 = Output CMOS 8mA, ”1” and ”0” at Low Impedance ;
O8DT = Output CMOS 8mA, Open Drain or Tristate ;
11/101
STLC5465B
I - PIN INFORMATION (continued)
I.2 - Pin Description (continued)
Pin N°
Symbol
Type
Function
MICROPROCESSOR INTERFACE (continued)
100
D9
I/O
Data bit 9 for µP if not multiplexed
101
D10
I/O
Data bit 10 for µP if not multiplexed
102
D11
I/O
Data bit 11 for µP if not multiplexed
103
D12
I/O
Data bit 12 for µP if not multiplexed
104
D13
I/O
Data bit 13 for µP if not multiplexed
105
D14
I/O
Data bit 14 for µP if not multiplexed
106
D15
I/O
Data bit 15 for µP if not multiplexed
MEMORY INTERFACE
109
TRI
I3
Token Ring Input (for use Multi-HDLCs in cascade)
110
TRO
O4
Token Ring Output (for use Multi-HDLCs in cascade)
111
NWE
O4T
Write Enable for memory circuits
112
NOE
O4T
Control Output Enable for memory circuits
113
NRAS0/NCE0
O4T
Row Address Strobe Bank 0 / Chip Enable 0 for SRAM
114
NCAS0/NCE1
O4T
Column Address Strobe Bank 0 / Chip Enable1 for SRAM
115
NRAS1/NCE2
O4T
Row Address Strobe Bank 1 / Chip Enable 2 for SRAM
116
NCAS1/NCE3
O4T
Column Address Strobe Bank 1 / Chip Enable 3 for SRAM
117
NRAS2/NCE4
O4T
Row Address Strobe Bank 2 / Chip Enable 4 for SRAM
118
NCE5
O4T
Chip Enable 5 for SRAM
119
NRAS3/NCE6
O4T
Row Address Strobe Bank 3 / Chip Enable 6 for SRAM
120
NCE7
O4T
Chip Enable 7 for SRAM
123
ADM0
O8T
Address bit 0 for SRAM and DRAM
124
ADM1
O8T
Address bit 1 for SRAM and DRAM
125
ADM2
O8T
Address bit 2 for SRAM and DRAM
126
ADM3
O8T
Address bit 3 for SRAM and DRAM
127
ADM4
O8T
Address bit 4 for SRAM and DRAM
128
ADM5
O8T
Address bit 5 for SRAM and DRAM
129
ADM6
O8T
Address bit 6 for SRAM and DRAM
130
ADM7
O8T
Address bit 7 for SRAM and DRAM
131
ADM8
O8T
Address bit 8 for SRAM and DRAM
132
ADM9
O8T
Address bit 9 for SRAM and DRAM
135
ADM10
O8T
Address bit 10 for SRAM and DRAM
136
ADM11
O8T
Address bit 11 for SRAM only
137
ADM12
O8T
Address bit 12 for SRAM only
138
ADM13
O8T
Address bit 13 for SRAM only
139
ADM14
O8T
Address bit 14 for SRAM only
Type : I1 = Input TTL ;
I2 = I1 + Pull-up ;
O4 = Output CMOS 4mA ;
O4T = O4 + Tristate ;
O8D = Output CMOS 8mA, Open Drain ;
O8T = Output CMOS 8mA, Tristate
12/101
I3 = I1 + Hysteresis ;
I4 = I3 + Pull-up ;
O8 = Output CMOS 8mA, ”1” and ”0” at Low Impedance ;
O8DT = Output CMOS 8mA, Open Drain or Tristate ;
STLC5465B
I - PIN INFORMATION (continued)
I.2 - Pin Description (continued)
Pin N°
Symbol
Type
Function
MEMORY INTERFACE (continued)
140
DM0
I/O
Memory Data bit 0
141
DM1
I/O
Memory Data bit 1
142
DM2
I/O
Memory Data bit 2
143
DM3
I/O
Memory Data bit 3
144
DM4
I/O
Memory Data bit 4
147
DM5
I/O
Memory Data bit 5
148
DM6
I/O
Memory Data bit 6
149
DM7
I/O
Memory Data bit 7
150
DM8
I/O
Memory Data bit 8
151
DM9
I/O
Memory Data bit 9
152
DM10
I/O
Memory Data bit 10
153
DM11
I/O
Memory Data bit 11
154
DM12
I/O
Memory Data bit 12
155
DM13
I/O
Memory Data bit 13
156
DM14
I/O
Memory Data bit 14
157
DM15
I/O
Memory Data bit 15
160
NTEST
I2
Test Control. When this pin is at 0V each output is high impedance except XTAL2 Pin.
Type : I1 = Input TTL ;
I2 = I1 + Pull-up ;
O4 = Output CMOS 4mA ;
O4T = O4 + Tristate ;
O8D = Output CMOS 8mA, Open Drain ;
O8T = Output CMOS 8mA, Tristate
I3 = I1 + Hysteresis ;
I4 = I3 + Pull-up ;
O8 = Output CMOS 8mA, ”1” and ”0” at Low Impedance ;
O8DT = Output CMOS 8mA, Open Drain or Tristate ;
Note : D0/15 input/output pins must be connected to one single external pull up resistor if not used.
I.3 - Pin Definition
I.3.1 - Input Pin Definition
I1
: Input 1 TTL
I2
: Input 2 TTL + pull-up
I3
: Input 3 TTL + hysteresis
I4
: Input 4 TTL + hysteresis +pull-up
I.3.2 - Output Pin Definition
O4
: Output CMOS 4mA
O4T : Output CMOS 4mA, Tristate
O8
: Output CMOS 8mA
O8T : Output CMOS 8mA,Tristate
O8D : Output CMOS 8mA,Open Drain
O8DT : Output CMOS 8mA,Open Drain or Tristate (Programmable pin)
Moreover, each output is high impedance when the NTEST Pin is at 0 volt except XTAL2 Pin which is a
CMOS output.
I.3.3 - Input/Output Pin Definition
I/O : Input TTL/ Output CMOS 8mA.
N.B. XTAL1 : this input is CMOS.
XTAL2 : NTEST pin at 0 has no effect on this pin.
13/101
STLC5465B
II - BLOCK DIAGRAM
The top level functionalities of Multi-HDLC appear on the general block diagram.
STLC5465
RAM
Bus
INTERRUPT
CONTROLLER
32 Tx HDLC
with CSMA CR
for Content. Bus
32 Tx DMAC
Rx
C/I
GCI1
GCI0
37
8
2
3
4
XTAL1
XTAL2
WDO
Internal Bus
µP
INTERFACE
XTAL
COUNTER
7
DIN8 28
BUS ARBITRATION
16 Tx
MON
16 Tx
C/I
16 Rx
MON
16 Rx
C/I
V10
32 Rx HDLC
with Adress
Recognition
D7
7
GCI CHANNEL DEFINITION
Pseudo
Random
Sequence
Generator
Pseudo
Random
Sequence
Analyser
DIN7 27
VCX IN
DOUT5
DOUT4
DOUT3
DOUT2
DOUT1
DOUT0
NDIS
SWITCHING MATRIX
n x 64 kb/s
GCI0
VCX OUT
DOUT6
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6 26
µP Bus
DOUT7
GCI1
32 Rx DMAC
FRAME A
0
1
2
3
4
5
6
20
22 21
25 24 23
WATCHDOG
CLOCK A
0
1
2
3
4
5
6
7
TIME SLOT ASSIGNER FOR MULTIHDLC
39
31 32
33 34
35
36
RAM
INTERFACE
6
Rx
Tx
Rx
MON DMAC DMAC
FRAME B
There are :
- The switching matrix,
- The time slot assigner,
- The 32 HDLC transmitters with associated DMA
controllers,
- The 32 HDLC receivers with associated DMA
controllers,
- The 16 Command/Indicate and Monitor Channel
transmitters belonging to two General Component Interfaces(GCI),
14/101
50 INT1
49 INT0
EC
CB
5
DCLK
9
16 FS
17 FSCG
To
Internal
Circuit
CLOCK B
V10
38
12 10 13
CLOCK
SELECTION
11
18 FSCV*
Figure 1 : General Block Diagram
- The 16 Command/Indicate and Monitor Channel
receivers belonging to two General Component
Interfaces (GCI),
- The memory interface,
- The microprocessor interface,
- The bus arbitration,
- The clock selection and time synchronization
function,
- The interrupt controller,
- The watchdog,
- The boundary scan.
STLC5465B
III - FUNCTIONAL DESCRIPTION
III.1 - The Switching Matrix N x 64 KBits/S
III.1.1 - Function Description
The matrix performs a non-blocking switch of 256
time slots from 8 Input Time Division Multiplex
(TDM) at 2 Mbit/s to 8 output Time Division Multiplex. A TDM is composed of 32 Time Slots (TS) at
64 kbit/s. The matrix is designed to switch a 64
kbit/s channel (Variable delay mode) or an hyperchannel of data (Sequence integrity mode). So, it
will both provide minimum throughput switching
delay for voice applications and time slot sequence
integrity for data applications on a per channel
basis.
The requirements of the Sequence Integrity (n*64
kbit/s) mode are the following:
All the time slots of a given input frame must be put
out during a same output frame.
The time slots of an hyperchannel (concatenation
of TS in the same TDM) are not crossed together
at output in different frames.
In variable delay mode, the time slot is put out as
soon as possible. (The delay is two or three time
slots minimum between input and output).
For test facilities, any time slot of an Output TDM
(OTDM) can be internally looped back into the
same Input TDM number (ITDM) at the same time
slot number.
A Pseudo Random Sequence Generator and a
Pseudo Random Sequence Analyzer are implemented in the matrix. They allow the generation a
sequence on a channel or on a hyperchannel, to
analyse it and verify its integrity after several
switching in the matrix or some passing of the
sequence across different boards.
The Frame Signal (FS) synchronises ITDM and
OTDM but a programmable delay or advance can
be introducedseparatelyon each ITDM and OTDM
(a half bit time, a bit time or two bit times).
An additional pin (PSS) permits the generation of
a programmable signal composed of 256 bits per
frame at a bit rate of 2048 kbit/s.
An external pin (NDIS) asserts a high impedance
on all the TDM outputs of the matrix when active
(during the initialization of the board for example).
III.1.2 - Architecture of the Matrix
The matrix is essentially composed of buffer data
memories and a connection memory.
The received serial data is first convertedto parallel
by a serial to parallelconverterand stored consecutively in a 256 position Buffer Data Memory (see
Figure 2 on Page 16).
To satisfy the Sequence Integrity (n*64 kbit/s) requirements, the data memory is built with an even
memory, an odd memory and an output memory.
Two consecutive frames are stored alternatively in
the odd and even memory. During the time an input
frame is stored, the one previously stored is transferred into the output memory according to the
connectionmemoryswitching orders. Aframe later,
the output memory is read and data is convertedto
serial and transferred to the output TDM.
III.1.3 - Connection Function
Two types of connections are offered :
- unidirectional connection and
- bidirectional connection.
An unidirectionalconnectionmakes only the switch
of an input time slot through an output one whereas
a bidirectionalconnectionestablishesthe link in the
other direction too. So a double connection can be
achieved by a single command (see Figure 3 on
Page 17).
III.1.4 - Loop Back Function
Any time slot of an Output TDM can be internally
looped back on the time slot which has the same
TDM number and the same TS number
(OTDMi, TSj) ----> (ITDMi, TSj).
In the case of a bidirectional connection, only the
one specified by the microprocessor is concerned
by the loop back (see Figure 4 on Page 17).
15/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 2 : Switching Matrix Data Path
PRSG : Pseudo Random Sequence Generator
PRSA : Pseudo Random Sequence Analyzer
OTSV : Output Time Slot Validated
INS : Insert
DIN 0/7
CM : Connection Memory (from CMAR Register)
BIT SYNCHRO
D7
Tx
HDLC
DIN’ 7
DI N 0/7
D4/5
HDLCM
ME : Message Enable
IMTD : Increased Min Throughtput Delay
SGV : Sequence Generator Validated
SAV : Sequence Analyzer Validated
Rx
GCI
From SMCR Register
1
PRSG
SGV
1
LOOP
1
PSEUDO RANDOM
SEQUENCE
GENERATOR
211 - 1
Rec. O.152
S/P
D
A
D
D
Sequence Integrity,
LOOP, PRSA, PRSG,
INS, OTSV
A
64kb/s and
n x 64kb/s
Sequence
Integrity
Internal
Bus
CONNECTION
MEMORY
1
DATA
MEMORIES
IMTD
CM
(when Read)
D
CM
CMDR
Data
Register
1
CMAR
INS
1
PRSG
ME
GCIR
D4/5
D7
Rx
HDLC
1
D0/7
BIT SYNCHRO
From Connection Memory
OTSV (per channel)
OR
From OMCR Register
OMV (per multiplex)
From N DIS PIN
(for all multiplexes)
DOUT 0/7
16/101
SAV
PSEUDO RANDOM
SEQUENCE
ANALYZER
211 - 1
Rec. O.152
1
P/S
Tx
GCI
PRSA
Address
Register
SFCR
R
Sequence Fault
Counter Register
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 3 : Unidirectional and Bidirectional Connections
OTSy, OTDMq
ITSx,ITDMp
DATA
MEMORY
n x 64kb/s
DOWN STREAM
DOWN STREAM
Unidirectional Connection
ITSx,ITDMp
DATA
MEMORY
n x 64kb/s
DOWN STREAM
ITSy, ITDMq
DOWN STREAM
OTSx, OTDMp
DATA
MEMORY
n x 64kb/s
UP STREAM
UP STREAM
Bidirectional Connection
5464-04.EPS
OTSy, OTDMq
p, q = 0 to 7
x, y = 0 to 31
Figure 4 : Loop Back
OTSV
OTSy, OTDMq
DOWN STREAM
ITSy, ITDMq
DATA
MEMORY
n x 64kb/s
DATA
MEMORY
n x 64kb/s
ITSx,ITDMp
DOWN STREAM
OTSx, OTDMp
UP STREAM
Loop
Loopback per channel relevant if bidirectional connection has been done.
III.1.5 - Delay through the Matrix
III.1.5.1 - Variable Delay Mode
In the variable delay mode, the delay through the
matrix dependson the relative positionsof the input
and output time slots in the frame.
So, some limits are fixed :
- the maximum delay is a frame + 2 time slots,
- the minimum delay is programmable.
Three time slots if IMTD = 1, in this case n = 2 in
the formula hereafter or two time slots if
IMTD = 0, in this case n = 1 in the same formula
(see Paragraph ”Switching Matrix Configuration
Reg SMCR (0C)H” on Page 64).
All the possibilities can be ranked in three cases :
a) If OTSy > ITSx + n then the variable delay is :
OTSy - ITSx Time slots
5464-05.EPS
UP STREAM
p, q = 0 to 7
x, y = 0 to 31
b) If ITSx < OTSy < ITSx + n then the variable delay
is :
OTSy - ITSx + 32 Time slots
c) OTSy < ITSx then the variable delay is :
32 - (ITSx - OTSy) Time slots.
N.B. Rule b) and rule c) are identical.
For n = 1 and n = 2, see Figure 5 on Page 18.
III.1.5.2 - Sequence Integrity Mode
In the sequence integrity mode (SI = 1, bit located
in the Connection Memory), the input time slots are
put out 2 frames later (fig. 6 - page 19). In this case,
the delay is defined by a single expression :
Constant Delay = (32 - ITSx) + 32 + OTSy
So, the delay in sequence integrity mode varies
from 33 to 95 time slots.
17/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 5 : Variable Delay through the matrix with ITDM = 1
1) Ca s e : If OTS y > ITS x + 2, the n Va ria ble De la y is : OTS y - ITSx Time S lots
F ra me n
Inpu t
Fra m e
ITS0
Outpu t
Fra m e
OTS 0
ITS x ITS x+1 ITSx+2
Fra me n + 1
ITS31 ITS0
ITS 31
y>x+2
OTS 31
OTS y
Variable De lay
(OTS y - ITSx)
2) Ca s e : If ITS x ≤ OTS y ≤ ITS x + 2, the n Variab le De la y is : O TS y - ITS x + 32 Tim eS lots
F ra me n
Fra me n + 1
Inpu t
Fra m e
ITS0
Outpu t
Fra m e
OTS 0
ITS x ITS x+1 ITSx+2
ITS31 ITS0
ITSx
ITS 31
x≤y≤x+2
OTS 31
OTS y
OTS y
32 Time S lots
Va riable De lay : OTS y - ITSx + 32 Time S lots
3) Ca s e : If OTS y < ITS x, the n Va ria ble De lay is : 32 - (ITSx - OTS y) Tim eS lots
F ra me n
Inpu t
Fra m e
ITS0
Outpu t
Fra m e
OTS 0
ITS x
Fra me n + 1
ITS x
ITS31 ITS0
ITS 31
y<x
OTS 31
Variable De lay : 32 - (ITSx - OTS y) Time S lots
32 TimeS lots
18/101
OTS y
5464-06.EPS
OTS y
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 6: Variable Delay through the matrix with ITDM = 0
1) Case : If OTSy > ITSx + 1, then Variable Delay is : OTSy - ITSx TimeSlots
Frame n
Input
Frame
ITS0
Output
Frame
OTS0
ITSx ITSx+1 ITSx+2
Frame n + 1
ITS31 ITS0
ITS31
y>x+1
OTS31
Variable Delay
OTSy
(OTSy - ITSx)
2) Case : If ITSx ≤ OTSy ≤ ITSx + 1, then Variable Delay is : OTSy - ITSx + 32 TimeSlots
Frame n
Frame n + 1
Input
Frame
ITS0
Output
Frame
OTS0
ITSx ITSx+1 ITSx+2
ITS31 ITS0
ITS31
ITSx
x ≤ y≤ x +1
OTS31
OTSy
32 TimeSlots
OTSy
Variable Delay : OTSy - ITSx + 32 TimeSlots
3) Case : If OTSy < ITSx, then Variable Delay is : 32 - (ITSx - OTSy) TimeSlots
Frame n
Input
Frame
ITS0
Output
Frame
OTS0
ITSx
Frame n + 1
ITSx
ITS31 ITS0
ITS31
y<x
OTS31
Variable Delay : 32 - (ITSx - OTSy) TimeSlots
OTSy
5464-07.EPS
OTSy
32 TimeSlots
19/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 7 : Constant Delay through the matrix with SI = 1
Co ns ta nt Delay = (32 -ITSx) + 32 + OTS y
0 ≤ x ≤ 31
0 ≤ y ≤ 31
ITS : Input Time S lot
OTS : Output TimeS lot
ITS0
Frame n + 1
ITS31
ITS0
Frame n + 2
ITS31
Min. Constant Delay = 33TS
1
+
32 Time S lots
ITS0
ITS31
OTS0
OTS 31
+0
= 33
Time S lots
OTS 31
Max. Constant Delay = 95 Time Slots
32 - 0
(32 - ITSx)
20/101
+ 32
+ 32
+ 31
+ OTS y
= 95
Time S lots
= Cons tant
Delay
5464-08.EPS
Frame n
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.1.6 - Connection Memory
III.1.6.1 - Description
The connection memory is composed of 256 locations addressed by the number of OTDM and TS
(8x32).
Each location permits :
- to connect each input time slot to one output time
slot (If two or more output time slots are connected to the same input time slot number, there
is broadcasting).
- to selectthe variable delay mode or the sequence
integrity mode for any time slot.
- to loop back an output time slot. In this case the
contents of an input time slot (ITSx, ITDMp) is the
same as the output time slot (OTSx,OTDMp).
- to output the contents of the corresponding connection memory instead of the data which has
been stored in data memory.
- to output the sequence of the pseudo random
sequence generator on an output time slot: a
pseudo random sequence can be inserted in one
or several time slots (hyperchannel) of the same
Output TDM ; this insertion must be enabled by
the microprocessor in the configuration register
of the matrix.
- to define the source of a sequenceby the pseudo
random sequence analyzer: a pseudo random
sequence can be extracted from one or several
time slots (hyperchannel)of the same Input TDM
and routed to the analyzer; this extraction can be
enabled by the microprocessor in the configuration register of the matrix (SMCR).
- to assert a high impedance level on an output
time slot (disconnection).
- to deliver a programmable 256-bit sequence during 125 microsecondson the Programmable synchronization Signal pin (PSS).
III.1.6.2 - Access to Connection Memory
Supposing that the Switching Matrix Configuration
Register (SMCR) has been already written by the
microprocessor, it is possible to access to the connection memory from microprocessor with the help
of two registers :
- Connection Memory Data Register (CMDR) and
- Connection Memory Address Register (CMAR).
III.1.6.3 - Access to Data Memory
To extract the contents of the data memory it is
possible to read the data memory from microprocessor with the help of the two registers :
- Connection Memory Data Register (CMDR) and
- Connection Memory Address Register (CMAR).
III.1.6.4 - Switching at 32 Kbit/s
Four TDMs can be programmed individually to
carry 64 channels at 32 Kbit/s (only if these TDMs
are at 2 Mbit/s).
Two bits (SW0/1) located in SMCR define the type
of channels of two couples of TDMs.
SW0 defines TDM0 and TDM4 (GCI0) and SW1
defines TDM1 and TDM5 (GCI1). If TDM0 or/and
TDM1 carry 64 channels at 32 Kbit/s then TDM2
or/and TDM3 are not available externally they are
used internally to perform the function.
Downstream switching at 32 kb/s on page 22.
Upstream switching at 32 kb/s on page 23.
III.1.6.5 - Switching at 16 kbit/s
The TDM4 and TDM5can beGCI multipexes.Each
GCI multipexcomprises 8 GCI channels.Each GCI
channel comprises one D channelat 16 Kbit/s.See
GCI channel definition GCI Synchro signal delivered by the Multi-HDLC on page 30.
It is possibleto switch the contentsof 16 D channels
from the 16 GCI channelsto 4 timeslots of the 256
output timeslots.
In the other direction the contents of an selected
timeslot is automatically switched to 4 D channels
at 16 Kbit/s.
See Connection Memory Data Register CMDR
(0E)H on page 74
21/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 8: Downstream Switching at 32kb/s
3.9µs
a
b
Free
c
Free
d
Free
e
DIN0
a
b
c
d
e
din2
c
a
dout2
d
b
MON
D C/I
MON
D
dout4
Internal
command
If SW0=1
DOUT4
(GCI 0) D
d
C/I A E
b
B1
DOUT 4
dout 4
(GCI 0)
dout 2
DOUT2
c
B2
4 bit shifting
din 2
SW0=1
Internal
commands
Switching
at 32 kb/ s
dout 5
din 1
(GCI 1)
dout 3
din 3
DIN2 not use d
DIN 1
4 bit shifting
DIN3 not used
SW1=1
MULTI HDLC STLC 546 5
22/101
C/I
DIN0
din 0
DOUT 5
DOUT3
a
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 9: Upstream Switching at 32kb/s
Timeslot (3.9µs)
d
DIN4
(GCI 0)
c
b
B1
B2
d
DOUT6
B2 GCI 1
c
B1 GCI 0
DIN6 =
shifted
DOUT6
d
B2 GCI1
a
Free
b
a
b
a
x
B2 GCI 0
c
a
B2 GCI 0
c
D C/I
y
B1 GCI 1
b
B1 GCI 0
Free
MON
Free
d
x
z
B2 GCI1
y
B1 GCI1
Free
e
DOUT0
DOUT 0
DIN4
Internal loopback
and
4 bit shifting (2+2)
by software
DOUT6
GCI 0
From
DOUT6
DIN6
Switching at 32 kb/s
DOUT1
MULTI HDLC
DIN5
GCI1
STLC 5465
23/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 10: Upstream and Downstream Switching at 16kb/s
TDM side
TSy
D11
D12
D21
D22
D31
D32
D41
D42
TSy of any TDM can
be programmable with y
comprised between
0 and .31
GCI side
D11
D12
C1
C2
C3
C4
A
E
TS 16n+3
D21
D22
C1
C2
C3
C4
A
E
TS 16n+7
D31
D32
C1
C2
C3
C4
A
E
TS 16n+11
D41
D42
C1
C2
C3
C4
A
E
TS 16n+15
n: GCI channel
number, 0 to 1
24/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.2 - HDLC Controller
III.2.1 - Function Description
The internal HDLC controller can run up to 32
channels in a conventional HDLC mode or in a
transparent (non-HDLC) mode (configurable per
channel).
Each channel bit rate is programmablefrom 4kbit/s
to 64kbit/s. All the configurations are also possible
from 32 channels (from 4 to 64 kbit/s) to one
channel at 2 Mbit/s.
In reception, the HDLC time slots can directly come
from the input TDM DIN8 (direct HDLC Input) or
from any other TDM input after switching towards
the output 7 of the matrix (configurable per time
slot).
In transmission, the HDLC frames are sent on the
output DOUT6 and on the output CB (with or without contention mechanism), or are switched towards the other TDM output via the input 7 of the
matrix (see Figure 11).
III.2.1.2 - Composition of an HDLC Frame
Opening Flag
Address Field (first byte)
Address Field (second byte)
Command Field (first byte)
Command Field (second byte)
Data (first byte)
Data (optional)
Data (last byte)
FCS (first byte)
FCS (second byte)
Closing Flag
- Opening Flag
- One or two bytes for address recognition (reception) and insertion (transmission)
- Data bytes with bit stuffing
- Frame Check Sequence: CRC with polynomial
G(x) = x16 +x12+x5+1
- Closing Flag.
III.2.1.1 - Format of the HDLC Frame
Theformat of an HDLCframe is the same in receive
and transmit direction and shown here after.
Figure 11 : HDLC and DMA Controller Block Diagram
DOUT 6
Direct HDLC Output
From Output 7
of the Matrix
From Output 6
of the Matrix
DIN 8
Dire ct HDLC Input
Conte ntion
Bus
To Input 7 of the Matrix
TIME SLOT ASSIGNER
32 CSMA-CR
32 ADDRESS
RECOGNITION
32 Tx HDLC
32 Rx FIFO’s
32 Tx FIFO’s
32 Rx DMAC
32 Rx DMAC
Echo
5464-09.EPS
µP
INTERFACE
32 Rx HDLC
RAM
INTERFACE
25/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.2.1.3 - Description and Functions of the
HDLC Bytes
- FLAG
The binary sequence 01111110marks the beginning and the end of the HDLC Frame.
Note : In reception, three possible flag configurations are allowed and correctly detected :
- two normal consecutive flags :
...0111111001111110...
- two consecutive flags with a ”0” common :
...011111101111110...
- a global common flag : ...01111110...
this flag is the closing flag for the current frame
and the opening flag for the next frame
- ABORT
The binary sequence 1111111 marks an Abort
command.
In reception,seven consecutive1’s, inside a message, are detected as an abort command and
generates an interrupt to the host.
In transmit direction, an abort is sent upon command of the micro-processor. No ending flag is
expected after the abort command.
- BIT STUFFING AND UNSTUFFING
This operation is done to avoid the confusion of
a data byte with a flag.
In transmission, if five consecutive 1’s appear in
the serial stream being transmitted,a zero isautomatically inserted (bit stuffing) after he fifth ”1”.
In reception, if five consecutive ”1” followed by a
zero are received, the ”0” is assumed to have
been inserted and is automatically deleted (bit
unstuffing).
- FRAME CHECK SEQUENCE
TheFrame Check Sequenceiscalculatedaccording
to the recommendationQ921 of the CCITT.
- ADDRESS RECOGNITION
In the frame, one or two bytes are transmitted to
indicate the destination of the message.
Two types of addresses are possible :
- a specific destination address
- a broadcast address.
In reception, the controller compares the receive
addresses to internal registers, which contain its
own address. 4 bits in the receive command
register (HRCR) inform the receiver of which
registers, it has to take into account for the comparison. The receiver can compare one or two
address bytes of the message to the specific
board address and/or the broadcast address.
For the specific destination address only, the
receiver can compare or not each bit of the two
receive address bytes to the programmable Address Field Recognition register. An Address
26/101
Field Recognition Mask register is associated to
each Address Field Recognition register; so each
received address bit can be masked or not individually.
Theprogrammable AddressField Recognitionregister is located in the Address Field Recognition
MemoryandtheprogrammableAddressFieldRecognition Mask register is located in the Address
Field Recognition Mask Memory.
Upon an address match, the address and the
data followingare written to the data buffers; upon
an address mismatch, the frame is ignored. So,
it authorizes the filtering of the messages. If no
comparison is specified, each frame is received
whatever its address field.
In Transmission, the whole of the transmit frame
is locatedin shared memory; the controller sends
the frame including the destination or broadcast
addresses.
III.2.2 - CSMA/CR Capability
An HDLC channel can come in and go out by any
TDM input on the matrix. For time constraints,
direct HDLC Access is achieved by the input TDM
(DIN 8) and the output TDM (DOUT6).
In transmission, a time slot of a TDM can be shared
between different sources in Multi-point to point
configuration(differentsubscriber’sboardsforexample).The arbitrationsystem is the CSMA/CR (Carrier
Sense Multiple access with Contention Resolution).
The contention is resolved by a bus connected to
the CB pin (Contention Bus). This bus is a 2Mbit/s
wire line common to all the potential sources.
If a Multi-HDLC has obtained the access to the bus,
the data to transmit is sent simultaneouslyon the CB
line and the outputTDM. Theresult of the contention
is readbackon the Echoline.If a collisionisdetected,
the transmission is stopped immediately. A contentionon a bit basisis so achieved. Each message to
be sent with CSMA/CR has a priority class (PRI = 8,
10) indicated by the Transmit Descriptor and some
rules are implemented to arbitrate the access to the
line. The CSMA/CR Algorithm is given. When a request to send a message occurs, the transmitter
determines if the shared channel is free. The MultiHDLC listenstotheEcholine.If C or more consecutive
”1” are detected (C depending on the message’s
priority), the Multi-HDLC begins to send its message.
Eachbit sent is sampled back and compared with the
originalvalue to send. If a bit is different, the transmission is instantaneouslystopped(beforethe end ofthis
bit time) andwill restart as soonas the Multi-HDLC will
detectthat the channel is freewithout interrupting the
microprocessor.
After a successful transmission of a message, a
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
programmablepenalty PEN(1 or 2) is appliedto the
transmitter (see Paragraph HDLC Transmit Command Register on Page 81). It guaranteesthat the
same transmitterwill not take the bus another time
before a transmitter which has to send a message
of same priority.
In case of a collision, the frame which has been
aborted is automaticallyretransmitted by the DMA
controller without warning the microprocessor of
this collision. The frame can be located in several
buffers in external memory. The collision can be
detected from the second bit of the opening frame
to the last but one bit of the closing frame.
III.2.3 - Time Slot Assigner Memory
Each HDLC channel is bidirectional and configurate by the Time Slot Assigner (TSA).
The TSAis a memoryof 32 words (one per physical
Time Slot) where all of the 32 input and output time
slots of the HDLC controllers can be associated
to logical HDLC channels. Super channels are
created by assigning the same logical channel
number to several physical time slots.
The following features are configurate for each
HDLC time slot :
- Time slot used or not
- One logical channel number
- Its source : (DIN 8 or the output 7 of the matrix)
- Its bit rate and concerned bits (4kbit/s to
64kbit/s). 4kbit/s correspond to one bit transmitted each two frames. This bit must be present in
two consecutive frames in reception, and repeated twice in transmission.
- Its destination :
- direct output on DOUT6
- direct output on DOUT6 and on the Contention
Bus (CB)
- on another OTDM via input 7 of the matrix and
on the Contention Bus (CB)
III.2.4 - Data Storage Structure
Data associated with each Rx and Tx HDLC channel is stored in externalmemory; The data transfers
between the HDLC controllers and memory are
ensuredby 32 DMAC(Direct Memory AccessController) in reception and 32 DMAC in transmission.
The storage structure chosen in both directions is
composed of one circular queue of buffers per
channel. In such a queue, each data buffer is
pointed to by a Descriptor located in external memory too. The main information contained in the
Descriptor is the address of the Data Buffer, its
length and the address of the next Descriptor; so
the descriptors can be linked together.
This structure allows to :
- Store receive frames of variable and unknown
length
- Read transmit frames stored in external memory
by the host
- Easily perform the frame relay function.
III.2.4.1 - Reception
At the initialization of the application, the host has
to prepare an Initialization Block memory, which
contains the first receive buffer descriptor address
for each channel, and the receive circular queues.
At the opening of a receive channel, the DMA
controller reads the address of the first buffer descriptor corresponding to this channel in the initialization Block. Then, the data transfer can occur
without intervention of the processor (see Figure
12 on Page 28).
A new HDLC frame always begins in a new buffer.
A long frame can be split between several buffers
if the buffer size is not sufficient. All the information
concerning the frame and its location in the
circular queue is included in the Receive Buffer
Descriptor :
- The Receive Buffer Address (RBA),
- The size of the receive buffer (SOB),
- The number of byteswritten into the buffer (NBR),
- The Next Receive Descriptor Address (NRDA),
- The status concerning the receive frame,
- The control of the queue.
III.2.4.2 - Transmission
In transmission, the data is managed by a similar
structure as in reception (see Figure 13 on
Page 28).
By the same way, a frame can be split up between
consecutive transmit buffers.
The main information contained in the Transmit
Descriptor are :
- transmit buffer address (TBA),
- numberof bytes to transmit(NBT) concerningthe
buffer,
- next transmit descriptor address (NTDA),
- status of the frame after transmission,
- control bit of the queue,
- CSMA/CR priority (8 or 10).
III.2.4.3 - Frame Relay
The principle of the frame relay is to transmit a
frame which has been received without treatment.
A new heading is just added. This will be easily
achieved, taking into account that the queue structure allows the transmission of a frame split between several buffers.
27/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 12 : Structure of the Receive Circular Queue
Initialization Block
up to 32 channels
Initial Receive
Descriptor
0
1
RDA
RDA
31
RDA
RECEIVE
DMA
CONTROLLER
Receive
Descriptor 2
NRDA
RBA
NRDA
RBA
Receive
Buffer 1
Receive
Buffer 2
Receive
Descriptor n
Receive
Descriptor 3
NRDA
RBA
NRDA
RBA
5464-10.EPS
Receive
Buffer 3
Receive
Buffer n
One receive circular queue by channel
Figure 13 : Structure of the Transmit Circular Queue
Initialization Block
up to 32 channels
0
1
TDA
TDA
31
TDA
TRANSMIT
DMA
CONTROLLER
Transmit
Descriptor 2
Initial Transmit
Descriptor
NTDA
TBA
NTDA
TBA
Transmit
Buffer 1
Transmit
Buffer 2
Transmit
Descriptor n
Transmit
Descriptor 3
NTDA
TBA
Transmit
Buffer n
Transmit
Buffer 3
One transmit circular queue by channel
28/101
5464-11.EPS
NTDA
TBA
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.2.5 - Transparent Modes
In the transparentmode, the Multi-HDLC transmits
data in a completely transparent manner without
performing any bit manipulation or Flag insertion.
The transparent mode is per byte function.
Two transparent modes are offered :
- First mode : for the receive channels, the
Multi-HDLC continuously writes received bytes
into the external memory as specified in the current receive descriptor without taking intoaccount
the Fill Character Register.
- Secondmode : the Fill CharacterRegister specifies
the ”fill character”which must be taken into account.
In reception,the ”fill character”will not betransferred
to theexternalmemory. Thedetectionof ”Fill character” marks the end of a message and generates an
interruptifBINT=1 (see TransmitDescriptoronPage
95). When the ”Fill character”is not detected a new
message is receiving.
As for the HDLC mode the correspondence
between the physical time slot and the logical
channel is fully defined in the Time Slot Assigner
memory (Time slot used or not used, logical channel number, source, destination).
III.2.6 - Command of the HDLC Channels
The microprocessor is able to control each HDLC
receive and transmit channel. Some of the commands are specific to the transmission or the reception but others are identical.
III.2.6.1 - Reception Control
The configuration of the controller operating mode
is: HDLC mode or Transparent mode.
The control of the controller: START, HALT, CONTINUE, ABORT.
- START : On a start command, the RxDMA controller reads the address of the first descriptor in
the initialization block memory and is ready to
receive a frame.
- HALT : For overloading reasons, the microprocessor can decide to halt the reception. The DMA
controller finishes transfer of the current frame to
external memory and stops. The channel can be
restarted on CONTINUE command.
- CONTINUE : The reception restarts in the next
descriptor.
- ABORT: On an abort command, the reception is
instantaneously stopped. The channel can be
restarted on a START or CONTINUE command.
Reception of FLAG (01111110) or IDLE (11111111)
between Frames.
Address recognition. The microprocessor defines
the addressesthat the Rx controller has to take into
account.
In transparent mode: ”fill character” register selected or not.
III.2.6.2 - Transmission Control
The configuration of the controller operating mode
is : HDLC mode or Transparent mode.
The control of the controller : START, HALT, CONTINUE, ABORT.
- START : On a start command, the Tx DMAcontroller reads the address of the first descriptor in the
initialization block memory and tries to transmit the
first frame if End Of Queue is not at ”1”.
- HALT : The transmitter finishes to send the current frame and stops.The channel can be restarted on a CONTINUE command.
- CONTINUE : if the CONTINUE command occurs
after HALT command, the HDLC Transmitter restarts by transmitting the next buffer associated
to the next descriptor.
If the CONTINUE command occurs after an
ABORT command which has occurred during a
frame, the HDLC transmitter restarts by transmitting the frame which has been effectively aborted
by the microprocessor.
- ABORT: On an abort command, the transmission
of the current frame is instantaneously stopped,
an ABORT sequence ”1111111” is sent, followed
by IDLE or FLAG bytes. The channel can be
restarted on a START or CONTINUE command.
Transmission of FLAG (01111110 ) or IDLE
(111111111)between frames can be selected.
CRC can be generated or not. If the CRC is not
generated by the HDLC Controller, it must be located in the shared memory.
In transparentmode: ”fill character” register can be
selected or not.
III.3 - C/I and Monitor
III.3.1 - Function Description
The Multi-HDLC is able to operate both GCI and V*
links. The TDM DIN/DOUT 4 and 5 are internally
connected to the CI and Monitor receivers/transmitters. Since the controllershandle up to 16CI and
16 Monitor channels simultaneously, the MultiHDLC can manage up to 16 level 1 circuits.
The Multi-HDLC can be used to support the CI and
monitor channels based on the following protocols :
- ISDN V* protocol
- ISDN GCI protocol
- Analog GCI protocol.
29/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.3.2 - GCI and V* Protocol
A TDM can carry 8 GCI channels or V* channels. The monitor and S/C bytes always stand at the same
position in the TDM in both cases.
Channel 0
Channel 31
TS0
TS1
TS2
TS3
B1
B2
MON
S/C
Channel 1 to Channel 30
The GCI or V* channels are composed of 4 bytes
and have both the same general structure.
B1
B2
MON
S/C
B1, B2 : Bytes of data. Those bytes are not
affected by the monitor and CI protocols.
MON : Monitor channel for operation and
maintenance information.
S/C
: Signalling and control information.
Only Monitor handshakes and S/C bytes are different in the three protocols :
ISDN V* S/C byte
D
C/I 4 bits
T
TS28
TS29
TS30
TS31
B1
B2
MON
S/C
III.3.3 - Structure of the Treatment
GCI/V* TDM’s are connected to DIN 4 and DIN 5.
The D channels are switched through the matrix
towards the output 7 and the HDLC receiver. The
Monitor and S/C bytes are multiplexed and sent to
the CI and Monitor receivers (see Figure 14 on
Page 31).
In transmission, the S/C and Monitor bytes are
recombined by multiplexing the information provided by the Monitor,C/I and the HDLCTransmitter.
Like in reception,the D channelis switched through
the matrix.
E
III.3.4 - CI and Monitor Channel Configuration
ISDN GCI S/C byte
D
C/I 4 bits
A
E
Monitor channel data is located in a time slot ; the
CI and monitor handshakebits are in the next time
slot.
A
E
Each channel can be defined independently. A
table with all the possible configurations is presented hereafter (Table 13).
Analog GCI S/C byte
C/I 6 bits
CI : The Command/Indicate channel is used for
activation/deactivation of lines and control
functions.
D : These 2 bits carry the 16 kbit/s ISDN basic
access D channel.
In GCI protocol, A and E are the handshake bits
and are used to control the transfer of information
on monitor channels.The E bit indicates the transfer of each new byte in one direction and the A bit
acknowledges this byte transfer in the reverse direction.
In V* protocol, there isn’t any handshakemode.The
transmitter has only to mark the validity of the
Monitor byte by positioning the E bit (T is not used
and is forced to ”1”).
For more information about the GCI and V*, refer
to the General Interface Circuit Specification (issue1.0, march 1989) and the France Telecom
Specification about ISDN Basic Access second
generation (November 1990).
30/101
Table 13 : C/I and MON Channel Configuration
C/I validated or not
Monitor validated
or not
CI For analog subscriber (6 bits)
CI For ISDN subscriber (4 bits)
Monitor V*
Monitor GCI
Note : A mix of V* and GCI monitoring can be performed for two
distinct channels in the same application.
III.3.5 - CI and Monitor Transmission/Reception
Command
The reception of C/I and Monitor messages are
managed by two interrupt queues.
In transmission, a transmit command register is
implemented for each C/I and monitor channel (16
C/I transmit command registers and 16 Monitor
transmit command registers). Those registers are
accessible in read and write modes by the microprocessor.
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 14 : D, C/I and Monitor Channel Path
DIN 5
GCI1
DIN 4
DOUT 4
GCI0
D Channels
from Tx HDLC
0
1
2
3
4
5
6
7
SWITCHING
MATRIX
0
1
2
3
4
5
6
7
GCI0
DOUT 5
GCI1
D Cha nnels
to Rx HDLC
GCI CHANNEL DEFINITION
16 Rx
C/I
16 Rx
MON
16 Tx
C/I
16 Tx
MON
5464-12.EPS
INTERRUPT
CONTR OLLER
Internal Bus
III.3.6 - Scrambler and Descrambler
TheTDM4 and TDM5 can be GCI multipexes.Each
GCI multipex comprises 8 GCI channels.Each GCI
channel comprises two B channels at 64 Kbit/s.
In reception it is possible to switch and to scramble
the contents of 32 B channels of GCI channels to
32 timeslots of the 256 output timeslots. In transmission these 32 timeslots are assigned to 32 B
channels.
In the other direction the contents of an selected B
channels is automatically switched and descrambled to one B channel of 16 GCI channel.
See Connection Memory Data Register CMDR
(0E)H on page 74 (SCR bit).
Connection between “ISDN channels” and GCI
channels.
Three timeslots are assigned to one“ISDN channels”. Each “ISDN channels” comprises three
channels:B1+B2+B* with B*= D1,D2, A, E, S1, S2,
S3, S4. GCI channel to/from ISDN channel on
page 32.
Upstream. From GCI channels to ISDN channels
on page 33.
- in reception: 16 GCI channels (B1+B2+MON+
D+C/I),
- in transmission: 16 ISDN channels (B1+B2+B*).
It is possible to switch the contents of B1, B2 and
D channelsfrom 16 GCIchannels in any16 “ISDN
channels”, TDM side.
The contents of B1 and/or B2 can be scrambled
or not. If scrambledthe number of the 32 timeslots
(TDM side) are different mandatory.
Receiving the contents of Monitor and Command
/ Indicate channels from 16 GCI channels. Primitives and messages are stored automatically in
the external shared memory.
Transmitting “six bit word” (A, E, S1, S2, S3, S4)
to any 16 “ISDN channels” TDM side or not. See
SBV bit of General Configuration Register GCR
(02)H on page 68.
Downstream. From ISDN channels to GCI channels on page 34.
- in reception: ISDN channel (B1+B2+B*)
- in transmission: GCI channel (B1+B2+MON+
D+C/I)
It is possible to switch the contents of B1, B2 and
D channels from 16 “ISDN channels”, TDM side
31/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
in 16 GCI channels.
The contents of B1 and/or B2 can be descrambled or not. If descrambled the 32 B1/B2 belong
to GCI channels mandatory.
Receiving six bit word (A, E, S1, S2, S3, S4) from
any 16 “ISDN channels”, TDM side. The 16 “six
bit word” are stored automatically in the external
shared memory.
Transmitting the contents of Monitor and Command / Indicate channels to 16 GCI channels.
See SBV bit of General Configuration Register
GCR (02)H on page 68.
Alarm Indication Signal.
This detection concerns 16 hyperchannels. One
hyperchannel comprises 16 bits (B1 and B2 only).
The AlarmIndicationsfor the 16 hyperchannelsare
stored automatically in the external shared memory. See AISD bit of SwitchingMatrix Configuration
Reg SMCR (0C)H on page 71.
Figure 15: GCI channel to/from ISDN Channel
GCI side
TDM side
TS3m
B1
B1
B1
B1
B1
B1
B1
B1
B1
TS3m+1
B2
B2
B2
B2
B2
B2
B2
B2
TS3m+2
D
D
A
E
S1
S2
S3
S4
SCRAMBLER /
DESCRAMBLER
B1
B1
B1
B1
B1
B1
B1
B1
B1
TS4n
SCRAMBLER /
DESCRAMBLER
B2
B2
B2
B2
B2
B2
B2
B2
TS4n+1
M1
M2
M3
M4
M5
M6
M7
M8
D
D
C1
C2
C3
C4
A
E
PCM at 2 Mb/s
m: ISDN channel
number, 0 to 9
If TDM at 4 Mb/s
odd timeslot
or even timeslot
can be selected
TS4n+2
TS4n+3
n: GCI channel
number, 0 to 7
Six bit word
Primitive
Command Indicate controllers
RX
TX
C/I interrupt
Queue located in
shared memory
32/101
Microprocessor
Monitor controllers
TX
RX
MON interrupt
Queue located in
shared memory
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 16: From GCI Channels to ISDN Channels
SCRAMBLER
up to 32
SCR
by timeslot
TDM 0, 2
if PCM
at 4 Mb/s
Extension TX
C/I controllers
up to 16 for
A, E, S1 to S4
SBV
for the 16
controllers
GCI side
DIN4/5
1
B1, B2
D, A, E S1 to S4
SWITCHING
MATRIX
RX C/I
controllers
up to 16 for
primitives
RX MON
controllers
up to 16
Interrupt controller
Microprocessor
C/I interrupt Queue,
MON interrupt Queue,
located in shared memory
33/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 17: From ISDN channels to GCI Channels
DESCRAMBLER
up to 32
B1, B2
TDM 0, 2
if PCM
at 4 Mb/ s
SCR
by timeslot
GCI side
DOUT4/5
B1, B2
D
SWITCHING
MATRIX
A, E, S1 to S4
B1, B2
(16 bits)
AIS
Extension RX
Detection
C/I controller
up to 16
up to 16
ISDN channels ISDN channels
C/I
A, E, MON
TX C/I
controller
up to 16
primitives
TX MON
controller
up to 16
primitives
Interrupt controller
C/I interrupt Queue
located in shared memory
III.4 - Microprocessor Interface
III.4.1 - Description
The Multi-HDLC circuit canbe controlledby several
types of microprocessors (ST9, Intel/Motorola 8 or
16 data bits interfaces) such as :
- ST9 family
- INTEL 80C188 8 bits
- INTEL 80C186 16 bits
- MOTOROLA 68000 16 bits
- MOTOROLA 68020 16/32 bits
- ST10 family
During the initialization of the Multi-HDLC circuit,
the microprocessor interface is informedof the type
of microprocessor that is connectedby polarisation
of three external pins MOD 0/2).
Two chip Select (CS0/1)pins are provided.CS0 will
34/101
Microprocessor
select the internal registers and CS1 the external
memory.
Table 14 : Microprocessor Interface Selection
MOD2
Pin
0
1
1
0
0
1
1
0
MOD1
Pin
1
1
0
0
0
0
1
1
MOD0
Pin
1
1
0
0
1
1
0
0
Microprocessor
80C188
80C186
68000
68020
ST9
ST10 A/D multiplexed
ST10 A/D not multiplexed
Reserved
STLC5465B
III.4.2 - Exchange with the shared memory
A Fetch Buffer located in the microprocessor interface allows to reduce the shared memory access
cycle for the microprocessor.
It is used whatevermicroprocessor selectedthanks
to MOD0/2 pins.
This Fetch Buffer consists of one Write FIFO and
four Read Fetch Memories.
III.4.2.1 - Write FIFO
When the microprocessor delivers the address
word named An to write data named [An] in the
shared memory in fact it writes data [An] and
addressword An in the Write FIFO (Deep 4 words).
If An is in Fetch Memory, [An] is removed in Fetch
Memory.
The number of wait cycles for the microprocessor
is strongly reduced.
III.4.2.2 - Read Fetch Memory
When the microprocessor delivers the address
word named An to read data named [An] out of the
shared memory in fact it reads data [An] from one
of four Read Fetch Memories.
The number of wait cycle for the microprocessor is
strongly reduced and can reach zero when An,
addressword delivered by the microprocessor, and
data [An] is already in the Read Fetch Memory and
validated.
The source of [An] is truly the shared memory
whatever An.
III.4.3 - Definition of the Interface for the different microprocessors
The signals connected to the microprocessor interface are presented on the following figures for the
different microprocessor.
Figure 17.1: Write FIFO and Fetch Memories.
Shared memory
To shared memory
Write FIFO
From shared memory
An, [An]
An+1, [An+1]
An+2, [An+2]
Read Fetch
microprocessor
interface
Memory
Four
Fetch Memories
An, [An]
An+3, [An+3]
From microprocessor
To microprocessor
Microprocessor
35/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 18 : Multi-HDLC connected to µP with multiplexed buses
MULTI-HDLC
µP ST9/10
INTEL
MOTOROLA
8/16 BITS
Multiplex
Address/Data Bus
Address Bus
µP
INTERFACE
Internal Bus
RAM
INTERFACE
Data Bus
STATIC or
DYNAMIC RAM
(organized
by 16 bits)
BUS ARBITRATION
Figure 19 : Multi-HDLC connected to µP with non-multiplexed buses
MULTI-HDLC
µP ST10
INTEL
MOTOROLA
8/16 BITS
Address Bus
Address Bus
µP
INTERFACE
Internal Bus
RAM
INTERFACE
Data Bus
Data Bus
STATIC or
DYNAMIC RAM
(organized
by 16 bits)
BUS ARBITRATION
Figure 20 : Microprocessor Interface for INTEL 80C188
INT0/1
WDO
NRES ET
CS 0/1
ARDY
INTEL
80C188
µP
INTERFACE
NWR
NR D
ALE
5464-15.EPS
A8/19
AD0/7
Figure 21 : Microprocessor Interface for INTEL 80C186
INT0/1
WDO
NRES ET
CS 0/1
NBHE
ARDY
INTEL
80C186
NWR
µP
INTERFACE
NR D
A16/19
AD0/15
36/101
5464-16.EPS
ALE
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 22 : Microprocessor Interface for MOTOROLA 68000
INT0/1
WDO
NRESET
MHDLC
CS0/1
NDTACK
R/NW
MOTOROLA
68000
µP
INTERFACE
NUDS
NLDS
NAS
A1/23
5464-15.EPS
AD8/15
AD0/7
CS0/1, Ax/23
R/NW
Figure 23 : Microprocessor Interface for MOTOROLA 68020
INT0/1
WDO
MHDLC
NRESET
CS0/1
NDSACK0/1
SIZE0/1
MOTOROLA
68020
0
µP
INTERFACE
R/NW
NDS
NAS
A0/23
AD8/15
AD0/7
R/NW
CS0/1, Ax/23
Figure 24 : Microprocessor Interface for ST9
INT0/1
WDO
MHDLC
NRE S ET
CS 0/1
WAIT
R/NW
µP
INTERFACE
NDS
NAS
A8/15
5464-19.EPS
S T9
AD0/7
37/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.5 - Memory Interface
III.5.1 - Function Description
The memory interface allows the connection of
Static or Dynamic RAM. The memory space addressable in the two configurationsis not thesame.
In the case of dynamic memory (DRAM), the memory interface will address up to 16 Megabytes. In
caseof staticmemory(SRAM) only 1 Megabytewill
be addressed. The memory location is always organized in 16 bits.
The memory is shared between the Multi-HDLC
and the microprocessor. Theaccess to the memory
is arbitrated by an internal function of the circuit:
the bus arbitration.
III.5.2 - Choice of memory versus microprocessor and capacity required
The memory interface depends on the memory
chips which are connected. As the memory chips
will be chosen versus the microprocessor and the
wanted memory space, the following table presents the different configurations DRAM and
SRAM selection versus µP.
Example 1 : if the applicationrequires 16 bit mProcessor and 1 Megaword Shared memory size, three
capabilities are offered :
- 4 DRAM Circuits (256Kx16) or
- 4 DRAM Circuits (1Mx4) or
- 1 DRAM Circuit (1Mx16).
Example 2 : if the application requires 8 bit mProcessor and 1 Megabyte Shared memory size, three
capabilities are offered:
- 2 DRAM Circuits (256Kx16) or
- 8 SRAM Circuits (128Kx8) or
- 2 SRAM Circuits (512kx8).
Example 3 : for small applications it is possible to
connect 2 SRAM Circuits (128Kx8) to obtain 256
Kilobytes shared memory.
III.5.3 - Memory Cycle
For SRAM and DRAM, the different cycles are
programmable. See Memory Interface Configuration Regist. MICR (32)H on Page 88.
Each cycle is equal to : p x 1/f
with f the frequencyof signal applied to the Crystal
1 input and p selected by the user. See page 9.
Table 22 : DRAM and SDRAM Selection versus µP
Microprocessor and
shared memory
Shared memory size required by the application
8 bits
µProcessor
Number of
Megabytes
0.5
1
2
4
8
16
16/32 bits
µProcessor
Number of
Megawords
0.25
0.5
1
2
4
8
1(256Kx16)
2(256Kx16)
4(256Kx16)
DRAM Circuits proposed
Capacity
Organization
4 Megabits
256Kx16
1Mx4
4(1Mx4)
8(1Mx4)
16(1Mx4)
16 Megabits
1Mx16
1(1Mx16)
2(1Mx16)
4(1Mx16)
64 Megabits
4Mx4
4(4Mx4)
8(4Mx4)
4Mx16
1(4Mx16)
2(4Mx16)
SRAM Circuits proposed
Capacity
Organization
1 Megabits
128Kx8
4 Megabits
512kx8
38/101
Not possible
4(128Kx8)
8(128Kx8)
2(512kx8)
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.5.4 - SRAM interface
The SRAM space achieves 1 Mbyte max. It is
always organized in 16 bits. The structure of the
memory plane is shown in the following figures.
Because of the different chips usable, 19 address
wires and 8 NCE (Chip Enable) are necessary to
address the 1 Mbyte. The NCE selects the Most or
Least Significant Byte versus the value of A0 delivered by the µP and the location of chip in the
memory space.
III.5.4.1 - 128K x 16 (up to 512K x 16) SRAM
This memory can be obtained with two 128K x 8
SRAM circuits (up to eight circuits)
Signals
NCE7
NCE6
NCE5
NCE4
NCE3
NCE2
NCE1
NCE0
A19
1
1
1
1
0
0
0
0
A18
1
1
0
0
1
1
0
0
A0 or equiv.
1
0
1
0
1
0
1
0
The Address bits delivered by the Multi-HDLC for
128K x 8 SRAM circuits are :
ADM0/14 and ADM15/16 (17 bits) corresponding
with A1/17 delivered by the µP.
Figure 25 :n x 128K x 16 SRAM Memory
Organization
ADM0/16, NWE, NOE
are con necte dto each circuit
128K x 16
128K x 8 circu it
NCE7
7
NCE6
6
NCE5
5
NCE4
4
NCE3
3
NCE2
2
The Address bits delivered by the Multi-HDLC for
512K x n SRAM circuits are :
ADM0/14 and ADM15/18 (19 bits) corresponding
with A1/19 delivered by the µP.
Figure 26 :512K x 8 SRAM Circuit Memory
Organization
ADM0/18, NWE, NOE
are conne cted to each circuit
512K x 16
512K x 8 circuit
1
NCE1
0
NCE0
DM8/15
DM0/7
III.5.5 - DRAM Interface
In DRAM, the memory space can achieve up to 16
megabytes organized by 16 bits. Eleven address
wires, four NRAS and two NCAS are needed to
select any byte in the memory. One NRAS signal
selects 1 bank of 4 and the NCAS signals select the
bytes concerned by the transfer (1 or 2 selecting a
byte or a word). The DRAM memory interface is
then defined. The ”RAS only” refresh cycles will
refresh all memory locations. The refresh is programmable. The frequency of the refresh is fixed
by the memory requirements.
III.5.5.1 - 256K x n DRAM Signals
Signals
NRAS3
NRAS2
NRAS1
NRAS0
NCAS1
NCAS0
A20
1
1
0
0
A19
1
0
1
0
A0
6800
1
0
UDS
LDS
The Address bits delivered by the Multi-HDLC for
256K x n DRAM circuits are :
ADM0/8 (2 x 9 = 18 bits) corresponding with A1/18
delivered by the µP.
Figure 27 : 256K x 16 DRAM Circuit Organization
CAS1
CAS0
RAS3
7
6
RAS2
5
4
RAS1
3
2
RAS0
1
0
256K x 16
NCE1
1
NCE0
DM8/15
0
DM0/7
Signals
NCE1
NCE0
A0 or equiv.
1
0
DM8/15
5464-22.EPS
III.5.4.2 - 512K x n SRAM
DM0/7
ADM0/8, NWE , NO E a re connected to ea ch circuit.
39/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.5.5.2 - 1M x n DRAM Signals
A22
A20
NRAS3
1
1
NRAS2
1
0
NRAS1
0
1
NRAS0
0
0
A0
6800
NCAS 1
NCAS 0
4M x 16
NCAS1
1
UDS
NCAS0
0
LDS
NRAS1
3
2
NRAS0
1
0
DM8/15
DM0/7
ADM0/10, NWE, NOE a re conne cte d to e a ch circuit
The Address bits delivered by the Multi-HDLC for
1M x n DRAM circuits are :
ADM0/9 (2 x 10 = 18 bits) correspondingwith A1/20
delivered by the µP.
Figure 28 : 1M x 16 DRAM Circuit Organization
NCAS1
NCAS0
NRAS3
7
6
NRAS2
5
4
NRAS1
3
2
NRAS0
1
0
DM8/15
DM0/7
ADM0/9, NWE, NOE a re connected to each circuit
5464-23.EPS
1M x 16
III.6 - Bus Arbitration
The Bus arbitration function arbitrates the access
to the bus between different entities of the circuit.
Those entities which can call for the bus are the
following :
- The receive DMA controller,
- The microprocessor,
- The transmit DMA controller,
- The Interrupt controller,
- The memory interface for refreshing the DRAM.
This list gives the memory access priorities per
default.
If the treatment of more than 32 HDLC channels is
required by the application, it is possible to chain
several Multi-HDLC components.That is done with
two external pins (TRI, TRO) and a token ring
system.
The TRI, TRO signals are managed by the bus
arbitration function too. When a chip has finished
its tasks, it sends a pulse of 30 ns to the next chip.
Figure 30 : Chain of n Multi-HDLC Components
III.5.5.3 - 4M x n DRAM Signals
Signals
A23
NRAS1
1
NRAS0
0
5464-24.EPS
Signals
Figure 29 : 4M x 16 DRAM Circuit Organization
TRI
A0 or equiv.
MHDLC 0
µP
RAM
TRO
TRI
MHDLC 1
1
NCAS0
0
The Address bits delivered by the Multi-HDLC for
4M x n DRAM circuits are :
ADM0/10 (2 x 11 = 22 bits) corresponding with
A1/22 delivered by the µP.
40/101
TRO
TRI
MHDLC n
µP Bus
TRO
RAM Bus
5464-25.EPS
NCAS1
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
III.7 - Clock Selection and Time Synchronization
III.7.1 - Clock Distribution Selection and
Supervision
clock distribution can be controlled by the microprocessor thanks to SELB, bit of General Configuration Register.
Depending on the applications, three different signals of synchronization (GCI, V* or Sy) can be
provided to the component. The clock A/B frequency can be a 4096 or 8192kHz clock. The
component is informed of the synchronization and
clocks that are connectedby software.The timings
of the different synchronization are given page 45.
Two clock distributions are available: Clock at
4.096 MHz or 8.192 MHz and a synchronization
signal at 8 KHz. The component has to select one
of these two distributions and to check its integrity.
See Fig. 31 MHDLC clock generation.
Two other clock distributions are allowed: Clock at
3072 MHz or 6144 MHz and a synchronization
signal at 8 KHz. See General Configuration Register GCR (02)H on page 61 DCLK, FSC GCI and
FSC V* are output on three external pins of the
Multi-HDLC. DCLK is the clock selected between
Clock A and Clock B. FSC, GCI and FSC V* are
functions of the selected distribution and respect
the GCI and V* frame synchronization specifications.
III.7.2 - VCXO Frequency Synchronization
An external VCXO can be used to provide a clock
to the transmission components. This clock is controlled by the main clock distribution (Clock A or
Clock B at 4096kHz). As the clock of the transmission component is 15360 or 16384kHz,a configurable function is necessary.
The VCXO frequency is divided by P (30 or 32) to
provide a common sub-multiple (512kHz) of the
reference frequency CLOCKA or CLOCKB
(4096kHz). The comparison of these two signals
gives an error signal which commands the VCXO.
Two external pins are needed to perform this function : VCXO-IN and VCXO-OUT (see Figure 32 on
Page 42).
The supervision of the clock distribution consists of
verifying its availability. The detection of the clock
absence is done in a less than 250 microseconds.
In case the clock is absent, an interrupt is generated with a 4 kHz recurrence. Then the clock
distribution is switched automatically up to detection of couple A or couple B. When a couple is
detected the change of clock occurs on a falling
edgeof the new selecteddistribution.Moreover the
Figure 31 : MHDLC Clock Generation
REF. CLOCK
RES ET
INT1
Clock La ck
Dete ction
from 2 50µs
FRAME A
CLOCK A
FSCV*
Frame
CLOCK S ELECTION
CLOCK
FSCGCI
ADAPTATION
CLOCK B
Select A o r B
(SELB)
Clock
Su pervision
Deactivation
(CSD)
A or B
Se lected
(BS EL)
Clock
HCL
DCLK
SYN1
S YN0
To th e inte rnal
MHDLC
5464-26.EPS
At RESET
FRAME A a nd CLOCK A
a re s e lecte d
FRAME B
GENERAL CONFIGURATION REGISTER (GCR)
41/101
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 32 : VCXO Frequency Synchronization
VCXO
f = 15 360kHz
or 16384kHz
LOW P ASS
F ILTER
/p
7
VCXO IN
OUX
8
VCXO OUT
/8
Re f =
409 6kHz
III.8 - Interrupt Controller
III.8.1 - Description
Three external pins are used to manage the interrupts generated by the Multi-HDLC. The interrupts
have three main sources :
- The operating interrupts generated by the HDLC
receivers/transmitters, the CI receivers and the
monitor transmitters/receivers. INT0 Pin is reserved for this use.
- The interrupt generatedby an abnormal working of
theclockdistribution.INT1Pinisreservedforthisuse.
- The non-activity of the microprocessor (Watchdog). WDO Pin is reserved for this use.
III.8.2 - Operating Interrupts (INT0 Pin)
There are five main sources of operating interrupts
in the Multi-HDLC circuit :
- The HDLC receiver,
- The HDLC transmitter,
- The CI receiver,
- The Monitor receiver,
- The Monitor transmitter.
When an interrupt is generated by one of these
functions, the interrupt controller :
- Collects all the information about the reasons of
this interrupt,
- Stores them in external memory,
- Informs the microprocessor by positioning the
INT0 pin in the high level.
Three interrupt queues are built in external memory
to store the information about the interrupts :
- A single queue for the HDLC receivers and transmitters,
- One for the CI receivers,
- One for the monitor receivers.
The microprocessor takes the interrupts into account by reading the Interrupt Register (IR) of the
interrupt controller.
42/101
MHDLC
EVM
This register informs the microprocessor of the
interrupt source. The microprocessor will have information about the interruptsource by readingthe
corresponding interrupt queue (see Paragraph ”Interrupt Register IR (38)H” on Page 91).
On an overflow of the circular interrupt queues and
an overrun or underrun of the different FIFO, the
INT0 Pin is activated and the origin of the interrupt
is stored in the Interrupt Register.
A 16 bits register is associated with the Tx Monitor
interrupt. It informs the microprocessor of which
transmitter has generated the interrupt (see Paragraph ”Transmit Monitor Interrupt Register TMIR
(30)H” on Page 88).
III.8.3 - Time Base Interrupts (INT1 Pin)
The Time base interrupt is generated when an
absence or an abnormal working of clock distribution is detected. The INT1 Pin is activated.
III.8.4 - EmergencyInterrupts (WDO Pin)
The WDO signal is activated by an overflow of the
watchdog register.
III.8.5 - Interrupt Queues
There are three different interrupt queues :
- Tx and Rx HDLC interrupt queue,
- Rx C/I interrupt queue,
- Rx Monitor interrupt queue.
Their length can be defined by software.
For debugging function, each interrupt word of the
CI interruptqueue and monitor interrupt queue can
be followed by a timestamped word. It is composed
of a counter which runs in the range of 250µs. The
counter is the same as the watchdog counter.
Consequently,the watchdogfunctionisn’t available
at the same time.
5464-27.EPS
if f = 153 60kHz, p = 30
if f = 163 84kHz, p = 32
STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 33 : The Three Circular Interrupt Memories
IBA + 256
INITIALIZATION
HDLC (Tx a nd Rx)
BLOC K
INTER RUPT QUEUE
IBA + 256
+ HDLC
Que ue Size
MON (Rx)
INTER RUP TQUEUE
IBA + 256
+ HDLC
Que ue S ize
+ MON
Que ue S ize
C/I (Rx)
INTER RUP T QUEUE
5464-28.EPS
IBA
IBA + 254
III.9 - Watchdog
III.10 - Reset
This function is used to control the activity of the
application. It is composed of a counter which
counts down from an initial value loaded in the
Timer register by the microprocessor.
There are two possibilities to reset the circuit :
- by software,
- by hardware.
If the microprocessor doesn’t reset this counter
before it is totally decremented, the external Pin
WDO is activated ; this signal can be used to reset
the microprocessor and all the application.
Each programmable register receives its default
value. After that, the default value of each data
register is stored in the associatedmemory except
for Time slot Assigner memory.
The initial time value of the counter is programmable from 0 to 15s in increments of 0.25ms.
At the reset of the component,the counter is automatically initialized by the value corresponding to
512ms which are indicated in the Timer register.
The microprocessor must put WDR (IDCR Register) to”1” to reset this counter and to confirm that
the application started correctly.
In the reverse case, the WDO signal could be used
to reset the board a second time.
The FS signal (8kHz) divided by two or the XTAL1
signal (typically 32768kHz) divided by 8192 can be
selected to increment the counter. At reset the
watchdog is incremented by the XTAL1 signal.
III.11 - Boundary Scan
The Multi-HDLC is equipped with an IEEE Standard Test Access Port (IEEEStd1149.1).The boundary scan technique involves the inclusion of a shift
register stage adjacent to each component pin so
that signals at component boundaries can be controlled and observed using scan testing principle.
Its intention is to enable the test of on board interconnections and ASIC production tests.
The external interface of the Boundary Scan is
composed of the signals TDI, TDO, TCK, TMS and
TRST as defined in the IEEE Standard.
43/101
STLC5465B
The values indicated in the tables from pag. 44 to pag. 67 are referred to VDD = 5V if not otherwise
specificated.
IV - DC SPECIFICATIONS
IV.1 - Absolute Maximum Ratings
Symbol
Parameter
Value
5V Power Supply Voltage
VDD
Input or Output Voltage
-0.5, 6.5
V
-0.5, VDD + 0.5
V
-55, +125
°C
Storage Temperature
Tstg
Unit
IV.2 - Power Dissipation
Symbol
P
Parameter
Power Dissipation
Test Conditions
Min.
VDD = 5V
VDD = 3.3V
Typ.
Max.
Unit
300
100
400
130
mW
mW
Typ.
Max.
Unit
5.25
V
IV.3 - Recommended DC Operating Conditions
Symbol
Parameter
Test Conditions
5V Power Supply Voltage
VDD
4.75
3.3V Power Supply Voltage
Operating Temperature
Toper
Min.
3
3.6
V
-40
+85
°C
Max.
Unit
0.8
V
1
µA
Note 1 : All the following specifications are valid only within these recommended operating conditions.
IV.4 - TTL Input DC Electrical Characteristics
Symbol
Parameter
Test Conditions
VIL
Low Level Input Voltage
VDD = 5V; VDD = 3.3V
VIH
High Level Input Voltage
VDD = 5V; VDD = 3.3V
IIL
Low Level Input Current
VI = 0V
High Level Input
VI = VDD
Vhyst
Schmitt Trigger hysteresis
VDD = 5V
VDD = 3.3V
VT+
Positive Trigger Voltage
VDD = 5V
VDD = 3.3V
VT-
Negative Trigger Voltage
VDD = 5V
VDD = 3.3V
CIN
Input Capacitance (see Note 2)
f = 1MHz @ 0V
IIH
C OUT
Output Capacitance
CI/O
Bidirextional I/O Capacitance
Min.
Typ.
2.0
0.4
0.3
0.6
0.6
V
-1
µA
0.7
0.5
1
0.8
V
V
2
1.4
2.4
2
V
V
0.8
0.9
2
V
V
4
pF
Max.
Unit
4
4
8
Note 2 : Excluding package
IV.5 - CMOS Output DC Electrical Characteristics
Symbol
Parameter
Test Conditions
VOL
Low Level Output Voltage
IOL = X mA (see Note 3)
VOH
High Level Output Voltage
IOH = -X mA (see Note 3)
Note 3 :
Min.
Typ.
0.4
VDD-0.4
V
V
X is the source/sink current under worst case conditions and is reflected in the name of the I/O cell according to the drive capability.
X = 4 or 8mA.
IV.6 - Protection
Symbol
VESD
44/101
Parameter
Electrostatic Protection
Test Conditions
C = 100pF, R = 1.5kΩ
Min.
2000
Typ.
Max.
Unit
V
STLC5465B
V - CLOCK TIMING
V.1 - Synchronization Signals delivered by the system
For one of three different input synchronizations which is programmed, FSCG and FSCV* signals
delivered by the Multi-HDLC are in accordance with the figure hereafter.
Figure 34 : Clocks received and delivered by the Multi-HDLC
CLOCK B
t2
t5h
t1
t5l
CLOCK A
3
4
5
6
7
0
1
1) S y Mode
Fra me A (or B)
t3
t4
t3
t4
t3
t4 CGI
2) GCI Mod e
Fra me A (or B)
3) V*Mod e
Fra me A (or B)
DIN 0/8, E CHO
DOUT 0/7, C B
if FS = F S CG
Bit3
Bit4
Bit5
Bit6
Bit7
Bit0
Time S lot 31
TDM0/7
Bit1
Time S lot 0
FS CG de livere d
by the circuit
FS CV* delivere d
by the circuit
5464-29.EPS
t6
The four Multiplex Configura tion Registe rs a re a t ze ro (no de lay).
Symbol
Parameter
Min.
Typ.
Max.
Unit
239 (320)
120 (158)
244 (325)
122 (162)
249 (330)
125 (165)
ns
ns
- 60
0
+60
ns
t1
Clock Period if 4096kHz (3072)
Clock Period if 8192kHz (6144)
t2
Delay between Clock A and Clock B
t3
Set up time Frame A (or B)/CLOCK A (or B)
10
t1-10
ns
Hold time Frame A (or B)/CLOCK A (or B)
10
10
t1-10
125000 - (t1 - 10)
ns
t5
Clock ratio t5h/t5l
75
t6
Duration of FSCG
t4
t4GCI
100
488
125
%
ns
45/101
STLC5465B
V - CLOCK TIMING (continued)
V.2 - TDM Synchronization
Figure 35 : Synchronization Signals received by the Multi-HDLC
CLOCK A (or B)
t1
t2
DCLK delivered by
the Multi-HDLC
t3
FS delivered by
the Multi-HDLC
t4
t5
t6
DOUT0/7, CB
Bit 7, Time Slot 31
Bit 0, Time Slot 0
t7
t7
DIN0/8
t9
t8
ECHO
The four Multiplex Configuration Registers are at zero (no delay between FS and Multiplexes).
Symbol
Parameter
t1
DCLK Clock Period if 4096kHz (3072)
DCLK Clock Period if 2048kHz (1536)
t2
Delay between CLOCK A or B and DCLK (30pF)
V DD = 5V
V DD = 3.3V
Min.
Typ.
Max.
Unit
Id CLOCKA
or B
244 (325)
488 (651)
Id CLOCKA
or B
ns
ns
5
20
30
32
ns
ns
t1-20
ns
125000-244
ns
50
100
ns
t3
Set-up Time FS/DCLK
t4
Hold Time FS/DCLK
t5
Duration FS
t6
DCLK to Data 50pF
DCLK to Data 100pF
t7
Set-up Time Data/DCLK
20
ns
t7
Hold Time Data/DCLK
20
ns
t8
Set-up Echo/DCLK (rising edge)
t9
Hold Time Echo/DCLK (rising edge)
46/101
20
20
244 (325)
ns
155
205
ns
ns
STLC5465B
V - CLOCK TIMING (continued)
V.3 - GCI Interface
Figure 36 : GCI Synchro Signal delivered by the Multi-HDLC
125 µs
FS re ce ived by
the Multi-HDLC
CH0
CH1
CH7
DIN4/5
DOUT4/5
GCI Ch a nn e l
B1
B2
MON
D
C/I AE
t1
DCLK de livered by
the Multi-HDLC
t3
t3
FS CG de livered by
the Multi-HDLC
t6
DOUT0/7, CB
if FSCG is connected to FS
Bit 0, Time S lot 0
t7
t7
5464-31.EPS
DIN0/8
The four Multiplex Configura tion Registers a re a t ze ro (no de lay betwee n FS and Multiplexes ).
Symbol
Parameter
Min.
Typ.
Max.
Unit
Id CLOCK A
or B
244 (325)
488 (651)
Id CLOCK A
or B
ns
ns
20
ns
t1
DCLK Clock Period if 4096kHz (3072)
DCLK Clock Period if 2048kHz (1536)
t3
DCLK to FSCG
t5
Duration FS
t6
DCLK to Data 50pF
DCLK to Data 100pF
t7
Set-up Time Data/DCLK
20
ns
t7
Hold Time Data/DCLK
20
ns
244
125000-244
ns
50
100
ns
ns
47/101
STLC5465B
V - CLOCK TIMING (continued)
V.4 - V* Interface
Figure 37 : V* Synchronization Signal delivered by the Multi-HDLC
125 µs
FS re ce ived by
th e Multi-HDLC
CH0
CH1
CH7
DIN4/5
DOUT4/5
GCI Ch a nn e l
B1
B2
MON
D
C/I AT
t1
DCLK de livere d by
th e Multi-HDLC
t3
t3
FSCV* de live re d by
th e Multi-HDLC
DOUT0/7, CB
if FSCG is conne cte d to FS
Bit 3, Time S lot 31
t7
t7
5464-32.EPS
DIN0/8
Th e four Multiple x Configura tion Re giste rs a re a t z e ro (no de la y be twe e n FS a nd Multiple xe s ).
Symbol
Parameter
Min.
Typ.
Max.
t1
Clock Period 4096kHz
t3
DCLK to FSCV*
t5
Duration FSCV*
t6
Clock to Data 50pF
Clock to Data 100pF
t7
Set-up Time Data/DCLK
20
ns
t7
Hold Time Data/DCLK
20
ns
48/101
244
Unit
ns
20
244
ns
ns
50
100
ns
nS
STLC5465B
V1 - MEMORY TIMING
VI.1 - Dynamic Memories
Figure 38 : Dynamic Memory Read Signals from the Multi-HDLC
NDS fro m µP
(or e quivalent)
T
Total Re ad Cycle
1/f
a
a
a
a
a
MASTERCLOCK
a pplied to XTAL1 P in
NRAS 0/3
a
HZ
Tu
HZ
Tv
NCAS 0/1
Tw
Tz
NWE
Tv/2
ADM0/10
Tw + Tz /2
NOE
Ts
Th
DM0/15 from
DRAM Circuit
Symbol
HZ
HZ
E ach s ignal from the MHDLC is high
impe dance outside this time if MBL = 0
Parameter
T
Delay between Data Strobe from the mP and beginning of cycle
a
Delay between Masterclock and Edge of each signal delivered by the
MHDLC (30pF)
V DD = 5V
V DD = 3.3V
Min.
5464-33.EPS
Note : S e e
MBL De finition
Typ.
Max.
Unit
20
30
40
ns
ns
1/f
2/f
ns
2/f
2/f
Tw
Delay between NCAS Falling Edge and NCAS rising Edge
Tz
Delay between NCAS Rising Edge and end of cycle
1/f
Ts
Set-up Time Data /NCAS Rising Edge
20
ns
Th
Hold Time Data/NCAS Rising Edge
0
ns
ns
49/101
STLC5465B
VI - MEMORY TIMING (continued)
Figure 39 : Dynamic Memory Write Signals from the Multi-HDLC
NDS fro m µP
(or equivalent)
T
Tota l Write Cycle
1/f
a
a
a
a
a
MASTE RCLOCK
a pplied to XTAL1 P in
NRAS 0/3
a
Tu
HZ
HZ
Tv
NCAS 0/1
Tw
Tz
NWE
Tv/2
ADM0/10
Td
DM0/15
NOE
HZ
Symbol
HZ
Ea ch s ignal from the MHDLC is high
impe dance outside this time if MBL = 0
Max.
Unit
f : Masterclock Frequency
32
33
MHz
Tu
Delay between beginning of cycle and NRAS Falling Edge
1/f
2/f
ns
Tv
Delay between NRAS Falling Edge and NCAS Falling Edge
1/f
2/f
ns
Tw
Delay between NCAS Falling Edge and NWE Rising Edge
1/f
2/f
ns
ns
f
Tz
Tv/2
Td
Parameter
Typ.
Delay between NWE Rising Edge and end of cycle
1/f
2/f
Delay between NRAS Falling Edge and address change
1/2f
1/f
ns
Data Valid after beginning of cycle (30 pF)
1/f
1/f
ns
Note : Total Cycle : Tu + Tv + Tw + Tz
50/101
Min.
5464-34.EPS
No te : S e e
MBL Definition
STLC5465B
VI - MEMORY TIMING (continued)
VI.2 - Static Memories
Figure 40 : Static Memory Read Signals from the Multi-HDLC
NDS fro m µP
(or equivalent)
T
Tota l Rea d Cycle
1/f
a
MASTERCLOCK
applied to XTAL1 P in
ADM0/18
a
a
a
HZ
HZ
NCE0/7
NWE
NOE
Twz
HZ
HZ
Ts
Th
Note : S e e
MBL De finition
Symbol
5464-35.EPS
DM0/15 from
S RAM Circuit
Each s igna l de livere d by the MHDLC
is high impeda nce outside this time
Parameter
T
Delay between Data Strobe delivered by the mP and beginning of
cycle
1/f
f: Masterclock frequency
Min.
Typ.
Max.
Unit
20
30
40
ns
ns
4/f
ns
2/f
Total read cycle: Twz + 1/f
a
Twz
Delay between Masterclock and Edge of each signal delivered by the
MHDLC (30pF)
V DD = 5V
V DD = 3.3V
NOE width
1/f
Ts
Set-up Time Data /NOE Rising Edge
20
ns
Th
Hold Time Data /NOE Rising Edge
0
ns
51/101
STLC5465B
VI - MEMORY TIMING (continued)
Figure 41 : Static Memory Write Signals from the Multi-HDLC
NDS from µP
(or equivalent)
T
1/f
a
a
MASTERCLOCK
applied to XTAL1 Pin
ADM0/18
Total Write Cycle
a
a
a
HZ
HZ
Tuv
NCE0/7
NWE
NOE
DM0/15
HZ
Symbol
Parameter
T
Delay between Data Strobe delivered by the µP and beginning of
cycle
1/f
f : Masterclock frequency
a
Delay between Masterclock and Edge of each signal delivered by the
MHDLC (30pF)
V DD = 5V
V DD = 3.3V
Tuv
NCE width
Note : Total Write Cycle : Tuv + 1/f
52/101
HZ
Each signal delivered by the MHDLC
is high impedance outside this time
Min.
5464-36.EPS
Note : See
MBL Definition
Typ.
Max.
Unit
30
20
40
ns
ns
4/f
ns
2/f
1/f
STLC5465B
VII - MICROPROCESSOR TIMING
VII.1 - ST9 Family MOD0=1, MOD1=0, MOD2=0
Figure 42 : ST9 Read Cycle
NCS0/1
t1
t2
t3
READY
t4
NAS/ALE
t12
t11
NDS/NRD
t5
t6
AD0/7
t7
t8
D0/7
A0/7
R/W / NWR
Symbol
t1
5464-37.EPS
t10
t9
Parameter
Min.
Typ.
Max.
Unit
98
ns
ns
14
ns
0
98
ns
ns
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
0
t2
Hold Time Chip Select /Data Strobe
t3
Delay Ready / NAS (if t1 > t3), (30pF)
Delay when immediate access
t4
Width NAS
20
t5
Set-up Time Address / NAS
9
ns
t6
Hold Time Address / NAS
9
ns
t7
Data Valid after Ready
0
15
ns
t8
Data Valid after Data Strobe (30pF)
0
15
ns
t9
Set-up Time R/W /NAS
15
ns
t10
Hold Time R/W / Data Strobe
15
ns
t11
Width NDS when immediate access
50
ns
t12
Delay NDS / NCS
5
ns
ns
53/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 43 : ST9 Write Cycle
NCS0/1
t1
t2
t3
READY
t4
NAS/ALE
t12
t11
NDS/NRD
t7
t5
t8
t6
AD0/7
D0/7
A0/7
t10
5464-38.EPS
t9
R/W / NWR
Symbol
t1
Parameter
Min.
Typ.
Max.
Unit
98
ns
NS
14
ns
0
98
ns
NS
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
0
t2
Hold Time Chip Select / Data Strobe
t3
Delay Ready / NAS (if t1 > t3), (30pF)
Delay when immediate access
t4
Width NAS
20
t5
Set-up Time Address / NAS
9
ns
t6
Hold Time Address / NAS
9
ns
t7
Set-up Time Data / Data Strobe
-15
ns
t8
Hold Time Data / Data Strobe
15
ns
t9
Set-up Time R/W / NAS
15
ns
t10
Hold Time R/W / Data Strobe
15
ns
t11
Width NDS when immediate access
50
ns
t12
Delay NDS / NCS
5
ns
54/101
ns
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.2 - ST10/C16x mult. A/D, MOD0 = 1, MOD1 = 0, MOD2 = 1
Figure 44 : ST10 (C16x) Read Cycle; Multiplexed A/D
NCS0/1
t2
NDSACK 0 /
DTAC K /
NREADY
t1
t3
t4
NAS/
ALE
t12
ND S/
NRD
t7
t8
D0/15
R/W /
NWR
t10
t9
A0/15 / AD0/15
A16/23 NBHE
Symbol
t1
Parameter
Delay Not Ready/NRD (if NCS0/1 = 0), (30pF)
Delay when immediate access
t2
Hold Time Chip Select / NRD
t3
Delay Not Ready / NRD rising edge
Delay when immediate access
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
0
V DD = 5V
V DD = 3.3V
10
ns
0
V DD = 5V
V DD = 3.3V
98
108
ns
ns
ns
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address /ALE
5
10
ns
ns
V DD = 5V
V DD = 3.3V
t7
Data valid after ready
0
t8
Data bus at high impedance after NRD (30pF)
0
15
15
ns
ns
t9
Set-up Time NBHE, Address A 16/23/ALE
5
ns
t10
Hold Time NBHE / NRD
10
ns
t12
Delay NRD / NCS
0
ns
55/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 45 : ST10 (C16x) Write Cycle; Multiplexed A/D
NCS0/1
t2
NDSACK0/
NDTAC K /
NREADY
t1
t3
t4
NA S /
ALE
ND S/
NRD
t12
t5
t6
t8
A0/15
AD0/15
D0/15
t7
R/W /
NWR
t10
t9
NBHE
A16/23
Symbol
t1
Parameter
Delay Not Ready/ALE (if NCS0/1 = 0), (30pF)
Delay when immediate access
t2
Hold Time Chip Select / NWR
t3
Delay Not Ready / NRD rising edge
Delay when immediate access
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
0
V DD = 5V
V DD = 3.3V
10
ns
0
V DD = 5V
V DD = 3.3V
98
108
ns
ns
ns
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address /ALE
5
10
ns
ns
-15
ns
0
ns
V DD = 5V
V DD = 3.3V
t7
Set up time Data/NWR
t8
Set up time NBHE-Address A 16/23/ALE
t9
Set-up Time NBHE, Address A 16/23/ALE
5
ns
t10
Hold Time NBHE / NWR
10
ns
t12
Delay NWR / NCS
0
ns
56/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.3 - ST10/C16x demult. A/D, MOD0 = 0, MOD1 = 1, MOD0 = 1
Figure 46 : ST10 (C16x) Read Cycle; Demultiplexed A/D
NCS0/1
t2
NDSACK 0/
DTAC K /
NREADY
t1
t3
t4
NA S/
ALE
t12
ND S/
NRD
t7
t8
D0/15
R/W /
NWR
t9
t10
Parameter
Min.
A0/15 / AD0/15
A16/23 NBHE
Symbol
t1
Delay Not Ready/NRD (if NCS0/1 = 0), (30pF)
Delay when immediate access
t2
Hold Time Chip Select / NRD
t3
Delay Not Ready / NRD rising edge
Delay when immediate access
Typ.
Max.
Unit
98
108
ns
ns
ns
0
V DD = 5V
V DD = 3.3V
10
ns
0
V DD = 5V
V DD = 3.3V
98
108
20
ns
ns
ns
t4
Width ALE
ns
t7
Data valid after NOTREADY falling efge (30pF)
0
15
ns
t8
Data bus at high impedance after NRD (30pF)
0
15
ns
t9
Set-up Time NBHE, Address AD0/15, A16/ALE
5
ns
t10
Hold Time NBHE / Address ADO/15, A16/23/NRD
10
ns
t12
Delay NRD / NCS
0
ns
57/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 47 : ST10 (C16x) Write Cycle; Demultiplexed A/D
NCS0/1
t2
NDSACK0/
DTACK /
NREADY
t1
t3
t4
NA S/
ALE
t12
ND S/
NRD
t8
D0/15
R/W /
NWR
t7
t9
t10
Parameter
Min.
AD0/15
Symbol
t1
Delay Not Ready/NWR (if NCS0/1 = 0), (30pF)
Delay when immediate access
t2
Hold Time Chip Select / NRD
t3
Delay Not Ready / NWR rising edge
Delay when immediate access
Typ.
Max.
Unit
98
108
ns
ns
ns
0
V DD = 5V
V DD = 3.3V
10
ns
0
V DD = 5V
V DD = 3.3V
98
108
ns
ns
ns
t4
Width ALE
20
ns
t7
Set up time Data/NWR
-15
ns
t8
Hold time Data/NWR
15
ns
t9
Set-up Time NBHE, Address AD0/15, A16/23/ALE
5
ns
t10
Hold Time NBHE, Address AD0/15, A16/23 NWR
10
ns
t12
Delay NWR / NCS
0
ns
58/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.4 - 80C188 MOD0=1, MOD1=1, MOD2=0
Figure 48 : 80C188 Read Cycle
NCS0/1
t1
t2
READY
t3
t4
NAS/ALE
NDS/NRD
t12
t7
t5
t6
AD0/7
t8
D0/7
5464-39.EPS
A0/7
R/W / NWR
Symbol
t1
Parameter
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
98
108
0
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NRD
10
ns
t3
Delay Ready / ALE (if t1 > t3), (30pF)
Delay when immediate access
0
ns
ns
ns
V DD = 5V
V DD = 3.3V
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address / ALE
5
10
ns
ns
V DD = 5V
V DD = 3.3V
t7
Data Valid after Ready
0
15
ns
t8
Data Valid after NRD (30pF)
0
ns
t12
Delay NDS / NCS
0
ns
59/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 49 : 80C188 Write Cycle
NCS0/1
t1
t2
READY
t3
t4
NAS/ALE
NDS/NRD
t12
AD0/7
t1
D0/7
A0/7
t7
R/W / NWR
Symbol
t8
t6
5464-40.EPS
t5
Parameter
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
98
108
0
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NWR
10
ns
t3
Delay Ready / ALE (if t1 > t3), (30pF)
Delay when immediate access
0
ns
ns
ns
V DD = 5V
V DD = 3.3V
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address / ALE
5
10
ns
ns
V DD = 5V
V DD = 3.3V
t7
Set-up Time Data / NWR
-15
ns
t8
Hold Time Data / NWR
15
ns
t12
Delay NWR / NCS
0
ns
60/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.5 - 80C186 MOD0=1, MOD1=1, MOD2=1
Figure 50 : 80C186 Read Cycle
NCS0/1
t1
t2
READY
t3
t4
NAS/ALE
NDS/NRD
t12
t7
t5
t8
t6
AD0/15
D0/15
A0/15
R/W / NWR
t10
NBHE
A16/19
NBHE A16/19
Symbol
t1
t11
NBHE
Parameter
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
5464-41.EPS
t9
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
0
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NRD
10
t3
Delay Ready / ALE (if t1 > t3), (30pF)
Delay when immediate access
0
V DD = 5V
V DD = 3.3V
ns
98
108
ns
ns
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address / ALE
VDD = 5V
VDD = 3.3V
5
10
ns
ns
t7
Data Valid after Ready
0
15
ns
t8
Data Valid after NRD (30pF)
0
15
ns
t9
Set-up Time NBHE-Address A16/19 / ALE
5
ns
t10
Hold Time Address A1619 / NRD
10
ns
t11
Hold Time NBHE- / NRD
10
ns
t12
Delay NRD / NCS
0
ns
61/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 51 : 80C186 Write Cycle
NCS0/1
t1
t2
READY
t3
t4
NAS/ALE
NDS/NRD
t12
t5
AD0/15
D0/15
A0/15
t7
R/W / NWR
NBHE A16/19
Symbol
t10
NBHE
A16/19
t11
NBHE
Parameter
Delay Ready / Chip Select (if t3 > t1), (30pF)
Delay when immediate access
5464-42.EPS
t9
t1
t8
t6
Min.
Typ.
Max.
Unit
98
108
ns
ns
ns
98
108
0
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NWR
10
ns
t3
Delay Ready / ALE (if t1 > t3), (30pF)
Delay when immediate access
0
ns
ns
ns
V DD = 5V
V DD = 3.3V
t4
Width ALE
20
ns
t5
Set-up Time Address / ALE
5
ns
t6
Hold Time Address / ALE
5
10
ns
ns
V DD = 5V
V DD = 3.3V
t7
Set-up Time Data / NWR
-15
ns
t8
Hold Time Data / NWR
15
ns
t9
Set-up Time NBHE-Address A16/19 / ALE
5
ns
t10
Hold Time Address 16/19 / ALE
10
ns
t11
Hold Time NBHE- / NWR
10
ns
t12
Delay NWR / NCS
0
ns
62/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.6 - 68000 MOD0=0, MOD1=0, MOD2=1
Figure 52 : 68000 Read Cycle
NCS0/1
t1
t2
t3
NDTACK
t4
NAS/ALE
SIZE0/NLDS
SIZE1/NUDS
t6
t5
A1/23
R/W / NWR
A1/23
t7
5464-43.EPS
t8
D0/15
Symbol
t1
Parameter
Min.
Typ.
Max.
Unit
98
108
ns
ns
Delay NDTACK / NCS0/1 (if t3 > t1), (30pF)
Delay when immediate access
V DD = 5V
V DD = 3.3V
0
0
t2
Hold Time Chip Select / NLDS-NUDS
0
t3
Delay NDTACK / NLDS-NUDS Falling Edge (if t1> t3), (30pF)
Delay when immediate access
V DD = 5V
VDD = 3.3V
0
0
98
108
ns
ns
0
0
20
30
ns
ns
t4
ns
Delay NDTACK / NLDS-NUDS Rising Edge
V DD = 5V
VDD = 3.3V
t5
Set-up Time Address and R/W / last NLDS-NUDS or NCS
0
ns
t6
Hold Time Address and R/W / NLDS-NUDS
0
ns
t7
Data Valid after NDTACK Falling Edge (30pF)
0
15
ns
t8
Data High Impedance after NLDS-NUDS Rising Edge (30pF)
0
15
ns
63/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 53 : 68000 Write Cycle
NCS0/1
t1
t2
t3
NDTACK
t4
NAS/ALE
SIZE0/NLDS
SIZE1/NUDS
t6
t5
A1/23
R/W / NWR
A1/23
t9
5464-44.EPS
t10
D0/15
Symbol
t1
Parameter
Min.
V DD = 5V
V DD = 3.3V
0
0
t2
Hold Time Chip Select / NLDS-NUDS
0
t3
Delay NDTACK / NLDS-NUDS Falling Edge (if t1> t3), (30pF)
Delay when immediate access
V DD = 5V
V DD = 3.3V
0
0
t4
Typ.
Max.
Unit
98
108
ns
ns
Delay NDTACK / NCS0/1 (if t3 > t1), (30pF)
Delay when immediate access
ns
98
108
ns
ns
20
30
ns
ns
Delay NDTACK / NLDS-NUDS Rising Edge
V DD = 5V
V DD = 3.3V
t5
Set-up Time Address and R/W / last NLDS-NUDS or NCS
0
ns
t6
Hold Time Address / NLDS-NUDS
0
ns
t9
Set-up Time Data / NLDS-NUDS
15
ns
t10
Hold Time Data / NLDS-NUDS
7
ns
64/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.7 - 68020 MOD0=0, MOD1=0, MOD2=0
Figure 54 : 68020 Read Cycle
NCS0/1
t2
t1
NDSACK0/
NDTACK
NDSACK1/
READY
t4
t3
NAS /
ALE
NDS /NRD
SIZE0/ NLDS
SIZE1/ NUDS
t6
t5
A 0/23
R/W /NWR
t7
t8
D0/15
Symbol
t1
Parameter
Min.
Max.
Unit
98
108
ns
ns
Delay NDTACK / NCS0/1 (if t3 > t1), (30pF)
Delay when immediate access
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NDS rising edge
t3
Delay NDSACK1 / NDS Falling Edge (if t1> t3), (30pF)
Delay when immediate access
0
0
0
V DD = 5V
V DD = 3.3V
t4
Typ.
0
0
ns
98
108
ns
ns
20
30
ns
ns
Delay NDSACK1 / NDS Rising Edge
V DD = 5V
V DD = 3.3V
t5
Set-up Time Address and R/W/last NDS or NCS
0
ns
t6
Hold Time Address / NDS
0
ns
t7
Data valid before NDSACK1 falling edge (30pF)
0
15
ns
t8
Data High Impedance after NDS (30pF)
0
15
ns
65/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
Figure 55 : 68020 Write Cycle
NCS0/1
t2
t1
NDSACK0/
NDTACK
NDSACK1/
READY
t4
t3
NAS /
ALE
NDS /NRD
SIZE0/ NLDS
SIZE1/ NUDS
t6
t5
A 0/23
R/W / NWR
t9
t10
D0/15
Symbol
t1
Parameter
Min.
Max.
Unit
98
108
ns
ns
Delay NDTACK / NCS0/1 (if t3 > t1), (30pF)
Delay when immediate access
V DD = 5V
V DD = 3.3V
t2
Hold Time Chip Select / NDS rising edge
t3
Delay NDSACK1 / NDS Falling Edge (if t1> t3), (30pF)
Delay when immediate access
0
0
0
V DD = 5V
V DD = 3.3V
t4
Typ.
0
0
ns
98
108
ns
ns
20
30
ns
ns
Delay NDSACK 1/ NDS Rising Edge
V DD = 5V
V DD = 3.3V
t5
Set-up Time Address and R/W/last NDS or NCS
0
ns
t6
Hold Time Address / NDS
0
ns
t9
Set-up Time Data / NDS
0
ns
t10
Hold Time Data / NDS
7
ns
66/101
STLC5465B
VII - MICROPROCESSOR TIMING (continued)
VII.8 - Token Ring Timing
Figure 56 : Token Ring
1/f
MASTER CLOCK
(applied to XTAL1 Pin)
a
a
TRO
tH
5464-47.EPS
tS
TRI
Symbol
Parameter
Min.
f
f : Masterclock frequency
a
Delay between Masterclock Rising Edge and Edges of TRO Pulse
delivered by the MHDLC (10pF)
V DD = 5V
V DD = 3.3V
Typ.
Max.
32.768
tS
Set-up Time TRI/Masterclock Masterclock Falling Edge
5
tH
Hold Time TRI/Masterclock Falling Edge
5
Unit
MHz
25
30
ns
ns
0
ns
Max.
Unit
MHz
ns
VII.9 - Master Clock Timing
Figure 57 : Master Clock
1/f
tH
tL
Symbol
f
Parameter
Masterclock Frequency
Min.
Typ.
30
32.768
33
30.3
30.5
33.3
1/f
Masterclock Period
tH
Masterclock High
12
ns
tL
Masterclock Low
12
ns
Crystal parameters:
a) frequency
b) Mode
f (typically 32768.00 kHz)
fundamental
c) Resonance
parallel
d) Load Capacity
Cl= 30pF
in accordance with 2 capacitors (47 pF each of
them) the first capacitor is soldered nearest pin 2
(XTAL1) and nearest the ground, the second capacitor is soldered nearest pin 3 (XTAL2) and
nearest the ground.
e) Serial resistor
40 Ohms max
ns
To reduce the drive level, the Crystal parameters
can be:
a) frequency
f (typically 32768.00 kHz)
b) Mode
c) Resonance
d) Load Capacity
fundamental
parallel
Cl = 20pF
in accordance with 2 capacitors (33 pF each of
them)
e) Serial resistor
40 Ohms max
N.B It is not necessary to add an external bias
resistor between XTAL1 pin and XTAL2 pin. This
resistor is inside the circuit.
67/101
5464-48.EPS
MASTER CLOCK
(applied to XTAL1 Pin)
STLC5465B
VIII - INTERNAL REGISTERS
‘Not used’ bits (Nu) are accessible by the microprocessor but the use of these bits by software is not
recommended.
‘Reserved’ bits are not implemented in the circuit. However, it is not recommended to use this address.
VIII.1 - Identification and Dynamic Command Register - IDCR (00)H
bit15
C15
C14
C13
C12
C11
C10
C9
bit8
bit7
C8
C7
bit 0
C6
C5
C4
C3
C2
C1
C0
When this register is read by the microprocessor, the circuit code C0/15 is returned. Reset has no effect
on this register.
C0/3 indicates the version.
C4/7 indicates the revision.
C8/11 indicates the foundry.
C12/15 indicates the type.
Example : this code is (0010)H for the first sample.
When this register is written by the microprocessor then :
bit15
Nu
Nu
Nu
Nu
Nu
Nu
Nu
bit8
bit7
Nu
Nu
bit 0
Nu
Nu
Nu
Nu
RSS
WDR
TL
TL
: TOKEN LAUNCH
When TL is set to 1 by the microprocessor, the token pulse is launched from the TRO pin (Token
Ring Output pin). This pulse is provided to the TRI pin (Token Ring Input pin) of the next circuit
in the applications where several Multi-HDLCs are connected to the same shared memory.
WDR : WATCHDOG RESET.
When the bit 1 (WDR) of this register is set to 1 by the microprocessor, the watchdog counter is
reset.
RSS : RESET SOFTWARE
When the bit 2 (RSS) of this register is set to 1 by the microprocessor, the circuit is reset (Same
action as reset pin).
After writing this register, the values of these three bits return to the default value.
VIII.2 - General Configuration - GCR (02)H
bit15
SBV
bit8
MBL
AFAB
SCL
BSEL SELB
CSD
HCL
bit7
SYN1 SYN0 D7
bit 0
EVM
TSV
TRD
PMA
WDD
After reset (0000)H
WDD
PMA
TRD
68/101
: Watch Dog Disable
WDD = 1, the Watch Dog is masked : WDO pin stays at ”0”.
WDD = 0, the Watch Dog generates an ”1” on WDO pin if the microprocessor has not reset the
Watch Dog during the duration programmed in Timer Register.
: Priority Memory Access
PMA = 1, if the token ring has been launched it is captured and kept in order to authorize
memory accesses.
PMA = 0, memory is accessible only if the token is present; after one memory access the token
is re-launched from TRO pin of the current circuit to TRI pin of the next circuit.
: Token Ring Disable
TRD = 1, if the token has been launched, the token ring is stopped and destroyed ; memory
accesses are not possible. The token will not appear on TRO pin.
TRD = 0, the token ring is authorized ; when the token will be launched,it will appearon TRO pin.
STLC5465B
VIII - INTERNAL REGISTERS (continued)
TSV
EVM
D7
: Time Stamping Validated
TSV = 1, the time stamping counter becomes a free binary counter and counts down from 65535
to 0 in step of 250ms (Total = 16384ms). So if an event occurs when the counter indicates A and
if the next event occurs when the counter indicates B then : t = (A-B) x 250ms is the time which
haspassedbetweenthe two eventswhich have beenstored in memoryby the InterruptController
(for Rx C/I and Rx MON CHANNEL only).
TSV = 0, the counter becomes a decimal counter.The Timer Register and this decimal counter
constitute a Watch Dog or a Timer.
: EXTERNAL VCXO MODE
EVM=1,VCXO Synchronization Counter is divided by 32.
EVM=0,VCXO Synchronization Counter is divided by 30.
: HDLC connected to MATRIX
D7 = 1, the transmit HDLC is connected to matrix input 7, the DIN7 signal is ignored.
D7 = 0, the DIN7 signal is taken into account by the matrix, the transmit HDLC is ignored by the
matrix.
SYN0/1: SYNCHRONIZATION
SYN0/1 : these two bits define the signal applied on FRAMEA/B inputs. For more details, see
”Synchronization signals delivered by the system. V.1.
SYN1
SYN0
0
0
SYIinterface
Signal applied on FRAMEA/B inputs
0
1
GCI Interface (the signal defines the first bit of the frame)
1
0
Vstar Interface (the signal defines thrid bit of the frame)
1
1
Not used
HCL
: HIGH BIT CLOCK
This bit defines the signal applied on CLOCKA/B inputs.
HCL = 1, bit clock signal is at 8192kHz
HCL= 0, bit clock signal is at 4096kHz
CSD : Clock Supervision Deactivation
CSD = 1, the lack of selected clock is not seen by the microprocessor; INT1 is masked.
CSD = 0, when the selected clock disappears the INT1 pin goes to 5V, 250ms after this
disappearance.
SELB : SELECT B
SELB = 1, FRAME B and CLOCK B must be selected.
SELB = 0, FRAME A and CLOCK A must be selected.
BSEL : B SELECTED (this bit is read only)
BSEL = 1, FRAME B and CLOCK B are selected.
BSEL = 0, FRAME A and CLOCK A are selected.
SCL
: Single Clock
This bit defines the signal delivered by DCLK output pin.
SCL = 1, Data Clock is at 2048kHz.
SCL = 0, Data Clock is at 4096kHz.
AFAB : Advanced Frame A/B Signal
AFAB = 1, the advance of Frame A Signal and Frame B Signal is 0.5 bit time versus the signal
frame A (or B) drawn in Figure 34.
AFAB = 0, Frame A Signal and Frame B Signal are in accordance with the clock timing
(see : Synchronization signals delivered by the Figure 45).
69/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
MBL
SBV
: Memory Bus Low impedance
MBL = 1, the shared memory bus is at low impedance between two memory cycles.
The memory bus includes Control bits, Data bits, Address bits. One Multi-HDLC is connected to
the shared memory.
MBL = 0, the shared memory bus is at high impedance between two memory cycles.
Several Muti-HDLCs can be connected to the shared memory. One pull up resistor is
recommended on each wire.
: Six Bit Validation (A, E, S1/S4 bits). Global validation for 16 channels (Upstream and
downstream).
SBV = 1, in reception, the six bit word (A, E, S1/S4) located in the same timeslot as D channel
can be received from any input timeslot; when this word is received identicaltwice consecutively,
it is stored in the external shared memory and an interrupt is generated if not masked (like the
reception of primitive from C/I channel). See “RECEIVE Command/Indicate INTERRUPT” on
page 97.
Sixteen independent detections are performed if the contents of any input timeslot is switched
in the timeslot 4n+3 of two GCI multiplexes (corresponding to DOUT4 and DOUT5) with (0 £ n
£ 7). Only the contents of D channel will be transmitted from input timeslot to GCI multiplexes.
From ISDN channels to GCI channels on page 34.
In transmission a six bit word (A, E, S1/S4) can be transmittedcontinuouslyto any outputtimeslot
via the TCIR. See “Transmit Command/Indicate Register TCIR (2A)H” on page 76. This word
(A, E, S1/S4) is set instead of primitive (C1, C2, C3, C4) and A, E bits received from the timeslot
4n+3 of two GCI multiplexes and the new contents of this timeslot 4n+3 must be switched on
the selected output timeslot.
SBV=0, the 16 six bit detections are not validated.
VIII.3 - Input Multiplex Configuration Register 0 - IMCR0 (04)H
bit15
bit8
bit7
bit 0
LP3 DEL3 ST(3)1 ST(3)0 LP2 DEL2 ST(2)1 ST(2)0 LP1 DEL1 ST(1)1 ST(1)0 LP0 DEL0 ST(0)1 ST(0)0
After reset (0000)H
See definition in next Paragraph.
VIII.4 - Input Multiplex Configuration Register 1 - IMCR1 (06)H
bit15
bit8
bit7
bit 0
LP7 DEL7 ST(7)1 ST(7)0 LP6 DEL6 ST(6)1 ST(6)0 LP5 DEL5 ST(5)1 ST(5)0 LP4 DEL4 ST(4)1 ST(4)0
After reset (0000)H
ST(i)0 : STEP0 for each Input Multiplex i(0 ≤ i ≤ 7), delayed or not.
ST(i)1 : STEP1 for each Input Multiplex i(0 ≤ i ≤ 7), delayed or not.
DEL(i); : DELAYED Multiplex i(0 ≤ i ≤ 7).
DEL (i) ST (i) 1 ST (i) 0
STEP for each Input Multiplex 0/7 delayed or not
X
0
0
Each received bit is sampled at 3/4 bit-time without delay.
First bit of the frame is defined by Frame synchronization Signal.
1
0
1
Each received bit is sampled with 1/2 bit-time delay.
1
1
0
Each received bit is sampled with 1 bit-time delay.
1
1
1
Each received bit is sampled with 2 bit-time delay.
0
0
1
Each received bit is sampled with 1/2 bit-time advance.
0
1
0
Each received bit is sampled with 1 bit-time advance
0
1
1
Each received bit is sampled with 2 bit-time advance.
When IMTD = 0 (bit of SMCR), DEL = 1 is not taken into account by the circuit.
1/2 bit time 244ns if TDM at 2048 kHz,
1/2 bit time 122ns if TDM at 4096 kHz.
70/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
LP (i)
: LOOPBACK 0/7
LPi = 1, Output Multiplex i is put instead of Input Multiplex i (0 ≤ i ≤ 7). LOOPBACKis transparent
or not in accordance with OMVi (bit of Output Multiplex Configuration Register).
LPi = 0, Normal case, Input Multiplex i(0 ≤ i ≤ 7) is taken into account.
N.B. If DIN4 and DIN5 are GCI Multiplexes : then ST(4)1 = ST(4)0 = 0 and ST(5)1 = ST(5)0 = 0 normally.
VIII.5 - Output Multiplex Configuration Register 0 - OMCR0 (08)H
bit15
bit8
bit7
bit 0
OMV3 DEL3 ST(3)1 ST(3)0 OMV2 DEL2 ST(2)1 ST(2)0 OMV1 DEL1 ST(1)1 ST(1)0 OMV0 DEL0 ST(0)1 ST(0)0
After reset (0000)H
See definition in next Paragraph.
VIII.6 - Output Multiplex Configuration Register 1 - OMCR1 (0A)H
bit15
bit8
bit7
bit 0
OMV7 DEL7 ST(7)1 ST(7)0 OMV6 DEL6 ST(6)1 ST(6)0 OMV5 DEL5 ST(5)1 ST(5)0 OMV4 DEL4 ST(4)1 ST(4)0
After reset (0000)H
ST(i)0 : STEP0 for each Output Multiplex i(0 ≤ i ≤ 7), delayed or not.
ST(i)1 : STEP1 for each Output Multiplex i(0 ≤ i ≤ 7), delayed or not.
DEL(i); : DELAYED Multiplex i(0 ≤ i ≤ 7).
DEL (i) ST (i) 1 ST (i) 0
STEP for each Output Multiplex 0/7 delayed or not
X
0
0
Each bit is transmitted on the rising edge of the double clock without delay.
Bit 0 is defined by Frame synchronization Signal.
1
0
1
Each bit is transmitted with 1/2 bit-time delay.
1
1
0
Each bit is transmitted with 1 bit-time delay.
1
1
1
Each bit is transmitted with 2 bit-time delay.
0
0
1
Each bit is transmitted with 1/2 bit-time advance.
0
1
0
Each bit is transmitted with 1 bit-time advance
0
1
1
Each bit is transmitted with 2 bit-time advance.
When IMTD = 0 (bit of SMCR), DEL = 0 is not taken into account by the circuit.
1/2 bit time 244ns if TDM at 2048 kHz,
1/2 bit time 122ns if TDM at 4096 kHz.
OMV (i) : Output Multiplex Validated 0/7
OMVi =1, condition to have DOUTi pin active (0 ≤ i ≤ 7).
OMVi =0, DOUTi pin is High Impedance continuously (0 ≤ i ≤ 7).
N.B. If DIN4 and DIN5 are GCI Multiplexes : then ST(4)1 = ST(4)0 = 0 and ST(5)1 = ST(5)0 = 0 normally.
VIII.7 - Switching Matrix Configuration Register - SMCR (0C)H
bit15
SW1
bit8
SW0
M1
M0
bit7
DR64 DR44 DR24 DR04 AISD
bit 0
ME
SGC
SAV
SGV
TS1
TS0
IMTD
After reset (0000)H
IMTD
: Increased Minimum Throughput Delay
When SI = 0 (bit of CMDR, variable delay mode) :
IMTD = 1, the minimum delay through the matrixmemoryis three time slots whateverthe selected
TDM output.
IMTD = 0, the minimum delay through the matrix memory is two time slots whatever the selected
TDM output.
When IMTD = 0, the input TDMs cannot be delayed versus the frame synchronization (Use
of IMCR is limited) and the output TDMs cannot be advanced versus the frame
synchronization.(Use of OMCR is limited).
71/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
TS0
: Tristate 0
TS0 = 1, the DOUT0/3 and DOUT6/7 pins are tristate : ”0” is at low impedance, ”1” is at low
impedance and the third state is high impedance.
TS0 = 0, the DOUT0/3 and DOUT6/7 pins are open drain : ”0” is at low impedance, ”1” is at high
impedance.
TS1
: Tristate 1
TS1 = 1, the DOUT4/5 pins are tristate : ”0” is at low impedance, ”1” is at low impedance and
the third state is high impedance.
TS1 = 0, the DOUT4/5 pins are open drain : ”0” is at low impedance, ”1” is at high impedance.
SGV : Pseudo Random Sequence Generator Validated
SGV = 1,PRS Generator is validated.The Pseudo Random Sequence is transmitted during the
related time slot(s).
SGV = 0, PRS Generator is reset.”0” are transmitted during the related time slot.
SAV
: Pseudo Random Sequence analyzer Validated
SAV = 1, PRS analyzer is validated.
SAV = 0, PRS analyzer is reset.
SGC : Pseudo Random Sequence Generator Corrupted
When SGC bit goes from 0 to 1, one bit of sequence transmitted is corrupted.
When the corrupted bit has been transmitted, SGC bit goes from 1 to 0 automatically.
ME
: MESSAGE ENABLE
ME = 1 The contents of Connection Memory is output on DOUT0/7 continuously.
ME = 0 The contents of Connection Memory acts as an address for the Data Memory.
AISD : Alarm Indication Signal Detection.
AISD = 1, the Alarm Indication Signal detection is validated.
Sixteen independent detections are performed for sixteen hyperchannels. The contents of any
input hyperchannel (B1, B2, D) switched (in transparent mode or not) on GCI channels is
analysed independently.
For each GCI channel, the 16bits of B1 and B2 are checked together; when all “one” has been
detected during 30 milliseconds, a status is stored in the Command/ Indicate interrupt queue
and an interrupt is generated if not masked (like the reception of primitive from GCI multiplexes).
See “RECEIVE Command/Indicate INTERRUPT” on page 97.
AISD=0, the Alarm Indication Signal detection for 16 hyperchannels is not validated.
DR04 : Data Rate of TDM0 is at 4Mb/s. Case:M1=M0=0
DR04 = 1, the signal received from DIN0 pin and the signal delivered by Dout0 pin are at 4Mb/s.
DIN1 pin and DOUT1 pin are ignored.
The Time Division Multiplex 0 is constituted by 64 timeslots numbered from 0 to 63.
DR04 = 0, the signals received from DIN0/1 pins and the signals delivered by Dout0/1 pins are
at 2Mb/s.
DR24 : Data Rate of TDM2 is at 4Mb/s.Case:M1=M0=0
R24 = 1, the signal received from DIN2 pin and the signal delivered by Dout2 pin are at 4Mb/s.
DIN3 pin and DOUT3 pin are ignored.
The Time Division Multiplex 2 is constituted by 64 timeslots numbered from 0 to 63.
DR24 = 0, the signals received from DIN2/3 pins and the signals delivered by Dout2/3 pins are
at 2Mb/s.
DR44 : Data Rate of TDM4 is at 4Mb/s.Case: M1=M0=0
DR44 = 1, the signal received from DIN4 pin and the signal delivered by Dout4 pin are at 4Mb/s.
DIN5 pin and DOUT5 pin are ignored.
TDM4/5 cannot be GCI multiplexes.
The Time Division Multiplex 4 is constituted by 64 timeslots numbered from 0 to 63.
DR44 = 0, the signals received from DIN4/5 pins and the signals delivered by Dout4/5 pins are
at 2Mb/s.
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STLC5465B
VIII - INTERNAL REGISTERS (continued)
DR64 : Data Rate of TDM6 is at 4Mb/s.Case:M1=M0=0
DR64 = 1, the signal received from DIN6 pin and the signal delivered by Dout6 pin are at 4Mb/s.
DIN7 pin and DOUT7 pin are ignored.
The Switching Matrix cannot be used to switch the channels to/from the HDLC controllers but
the RX HDLC controller can be connectedto DIN8 and the TX HDLC controller can be connected
to CB pin.
The Time Division Multiplex 6 is constituted by 64 timeslots numbered from 0 to 63.
DR64 = 0, the signals received from DIN6/7 pins and the signals delivered by Dout6/7 pins are
at 2M b/s.
M1/0 : Data Rate of TDM0/8;
these two bits indicatethe data rateof heightTime Division Multiplexes TDM0/7 relative to DIN0/7
and DOUT0/7. The table below shows the different data rates with the clock frequency defined
by HCL bit (General Configuration Register).
M1
M0
Data Rate of TDM0/7 in Kbit/s
CLOCKA/B signal frequency
HCL = 0
HCL = 1
0
0
2048 (or 4096 in accordance with DR0x4)
4096KHz
8192KHz
0
1
1536 (or 3072 in accordance with DR0x4)
3072KHz
6144KHz
1
0
Reserved
1
1
Reserved
SW
: Switching at 32 Kbit/s for the TDM0 (DIN0/DOUT0)
SW0=1
DIN0 can receive 64 channels at 32 Kbit/s if Data Rate of TDM0 is at 2048 Kbit/s.
DOUT0 can deliver 64 channels at 32 Kbit/s.
DIN2/DOUT2 are not available.
DIN2 is used to receive internally TDM0 (DIN0) 4 bit-times shifted
DOUT2 is used to multiplex internally TDM2 and TDM4. Downstream switching at 32 kb/s on
page 22.
SW1
: SW1: Switching at 32 Kbit/s for the TDM1 (DIN1/DOUT1)
SW1=1
DIN1 can receive 64 channels at 32 Kbit/s if Data Rate of TDM1is at 2048 Kbit/s.DOUT0 can
deliver 64 channels at 32 Kbit/s.
DIN3/DOUT3 are not available.
DIN3 is used to receive internally TDM1(DIN1) and to shift it (4 bit-times)DOUT3 is used to
multiplex internally TDM3 and TDM5. Downstream switching at 32 kb/s on page 22.
SW1=0
DIN0 receive 32 (or 24) channels at 64 Kbit/s or 64 (or 48) channels at 64 Kbit/s depending on
DR04 bit.
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STLC5465B
VIII - INTERNAL REGISTERS (continued)
VIII.8 - Connection Memory Data Register - CMDR (0E)H
CONTROL REGISTER (CTLR)
SOURCE REGISTER (SRCR)
bit15
SCR
PS
PRSA
S1
S0
OTSV LOOP
bit8
bit7
SI
IM2
bit 0
IM1
IM0
ITS 4 ITS 3 ITS 2 ITS 1 ITS 0
After reset (0000)H
This 16 bit register is constituted by two registers :
SOURCE REGISTER (SRCR) and CONTROL REGISTER (CTLR)
SOURCE REGISTER (SRCR) has two use modes depending on CM (bit of CMAR).
CM = 1, access to connection memory (read or write)
- PRSG = 0, ITS 0/4 and IM0/2 bits are defined hereafter :
ITS 0/4 : Input time slot 0/4 define ITSx with : 0 ≤ x ≤ 31;
IM0/2 : Input Time Division Multiplex 0/2 define ITDMp with : 0 ≤ p ≤ 7.
- PRSG = 1, the Pseudo Random Sequence Generator is validated, SRCR is not significant.
CM = 0, access to data memory (read only). SRC is the data register of the data memory.
CONTROL REGISTER (CTLR) defines each Output Time Slot OTSy of each Output Time Division Multiplex OTDMq :
SI
: SEQUENCE INTEGRITY
SI = 1, the delay is always : (31 - ITSx) + 32 + OTSy.
SI = 0, the delay is minimum to pass through the data memory.
LOOP : LOOPBACK per channel relevant if a bidirectional connection has been established.
LOOP = 1, OTSy, OTDMq is taken into account instead of ITSy, ITDMq.
OTSV = 1, transparentMode LOOPBACK.
OTSV = 0, not Transparent Mode LOOPBACK.
OTSV : OUTPUT TIME SLOT VALIDATED
OTSV = 1, OTSy OTDMq is enabled.
OTSV = 0, OTSy OTDMq is High Impedance.
(OTSy : Output Time slot with 0 ≤ y ≤ 31; OTDMq : Output Time Division Multiplex with 0 ≤ q ≤ 7).
S1/S0 : SOURCE 1/0
S1
S0
Source for each timeslot of DOUT0/7
0
0
Data Memory (Normal case)
0
1
Connection Memory
1
0
D channels from/to GCI multiplexes (See note and table hereafter)
1
1
Pseudo Random Sequence Generator delivers Hyperchannel at n x 64Kb/s is possible.
Note:
Connection
When the source of D channels is selected (GCI channels defined by ITS 1/0) and when
the destination is selected (Output timeslot defined by OTS 0/4; output TDM defined by
OM 0/2) the upstream connection is set up; the downstream connection (reverse
direction TDM to GCI) is set up automatically if ITS 2 bit is at 1. So BID, bit of CMAR
must be written at”0”.
Release
Remember: write S1=1, S0=0 and ITS 2 bit = 0 to release the downstream connection;
the upstream connection is released when the source changes.
74/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
TABLE: SWITCHING AT 16Kb/s WHEN ITS3 = 0
S1
S0
0
0
1
0
Upstream
Source: D channels of one of 16
GCI channels
Destination: two bits of one TDM
Downstream
Source: two bits of one TDM
Destination: D channels of one of 16
GCI channels
0
The contents of D channels of GCI
0 /3 of multiplex DIN4 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 0 in bit 1/2
D channel of GCI 1 in bit 3/4
D channel of GCI 2 in bit 5/6
D channel of GCI 3 in bit 7/8
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 0/3 of multiplex
DOUT4
bit 1/2 in D channel of GCI 0
bit 3/4 in D channel of GCI 1
bit 5/6 in D channel of GCI 2
bit 7/8 in D channel of GCI 3
1
The contents of D channels of GCI
4/7 of multiplex DIN4 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 4 in bit 1/2
D channel of GCI 5 in bit 3/4
D channel of GCI 6 in bit 5/6
D channel of GCI 7 in bit 7/8
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 4/7 of multiplex
DOUT4.
bit 1/2 in D channel of GCI 4
bit 3/4 in D channel of GCI 5
bit 5/6 in D channel of GCI 6
bit 7/8 in D channel of GCI 7
0
The contents of D channels of GCI 0
/3 of multiplex DIN5 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 0 in bit 1/2
D channel of GCI 1 in bit 3/4
D channel of GCI 2 in bit 5/6
D channel of GCI 3 in bit 7/8
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 0/3 of multiplex
DOUT5.
bit 1/2 in D channel of GCI 0
bit 3/4 in D channel of GCI 1
bit 5/6 in D channel of GCI 2
bit 7/8 in D channel of GCI 3
1
The contents of D channels of GCI
4/7 of multiplex DIN5 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 4 in bit 1/2
D channel of GCI 5 in bit 3/4
D channel of GCI 6 in bit 5/6
D channel of GCI 7 in bit 7/8
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 4/7 of multiplex
DOUT5.
bit 1/2 in D channel of GCI 4
bit 3/4 in D channel of GCI 5
bit 5/6 in D channel of GCI6
bit 7/8 in D channel of GCI 7
ITS 3 ITS 2 ITS 1 ITS 0
0
1
1
1
75/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
TABLE: SWITCHING AT 16KB/S when ITS3 =1
S1
S0
0
0
1
0
Upstream
Source: D channels of one of 16
GCI channels
Destination: two bits of one TDM
Downstream
Source: two bits of one TDM
Destination: D channels of one of 16
GCI channels
0
The contents of D channels of GCI
0 /3 of multiplex DIN4 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 0 in bit 7/8
D channel of GCI 1 in bit 5/6
D channel of GCI 2 in bit 3/4
D channel of GCI 3 in bit 1/2
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 0/3 of multiplex
DOUT4
bit 7/8 in D channel of GCI 0
bit 5/6 in D channel of GCI 1
bit 3/4 in D channel of GCI 2
bit 1/2 in D channel of GCI 3
1
The contents of D channels of GCI
4/7 of multiplex DIN4 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 4 in bit 7/8
D channel of GCI 5 in bit 5/6
D channel of GCI 6 in bit 3/4
D channel of GCI 7 in bit 1/2
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 4/7 of multiplex
DOUT4.
bit 7/8 in D channel of GCI 4
bit 5/6 in D channel of GCI 5
bit 3/4 in D channel of GCI 6
bit 1/2 in D channel of GCI 7
0
The contents of D channels of GCI 0
/3 of multiplex DIN5 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 0 in bit 7/8
D channel of GCI 1 in bit 5/6
D channel of GCI 2 in bit 3/4
D channel of GCI 3 in bit 1/2
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 0/3 of multiplex
DOUT5.
bit 7/8 in D channel of GCI 0
bit 5/6 in D channel of GCI 1
bit 3/4 in D channel of GCI 2
bit 1/2 in D channel of GCI 3
1
The contents of D channels of GCI
4/7 of multiplex DIN5 are transferred
into the output timeslot of one TDM
defined by the destination register
(CMAR).
D channel of GCI 4 in bit 7/8
D channel of GCI 5 in bit 5/6
D channel of GCI 6 in bit 3/4
D channel of GCI 7 in bit 1/2
The contents of the input timeslot
(same number as the number of the
output timeslot) is transferred in D
channel of GCI 4/7 of multiplex
DOUT5.
bit 7/8 in D channel of GCI 4
bit 5/6 in D channel of GCI 5
bit 3/4 in D channel of GCI 6
bit 1/2 in D channel of GCI 7
ITS 3 ITS 2 ITS 1 ITS 0
1
1
1
1
PRSA : Pseudo Random Sequence analyzer
If PRSA = 1, PRS analyzer is enabled during OTSy OTDMq and receives data :
INS = 0, data comes from Data Memory.
INS = 1 AND PRSG=1, Data comes from PRS Generator (Test Mode).
If PRSA = 0, PRS analyzer is disabled during OTSy OTDMq.
PS
: Programmable Synchronization
If PS = 1, Programmable Synchronization Signal Pin is at ”1” during the bit time defined by OTSy
and OTDMq.
For OTSy and OTDMq with y = q = 0, PSS pin is at ”1” during the first bit of the frame defined
by the Frame synchronization Signal (FS).
If PS = 0, PSS Pin is at ”0” during the bit time defined by OTSy and OTDMq.
SCR : Scrambler/ Descrambler
SCR=1, the scrambler or the descrambler are enabled. Both of them are located after the
switching matrix.
76/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
SCR : The scrambler is enabled when the output timeslot defined by the destination register (DSTR)
(cont’d) is an output timeslot belonging to any TDM except the two GCI multiplexes; the contents of this
output timeslot will be scrambled in accordance with the IUT-T V.29 Rec.
The descrambler is enabled when the output timeslot defined by the destinationregister (DSTR)
is an output timeslot belonging to the two GCI multiplexes except any TDM; the contents of this
output timeslot is descrambled in accordance with the IUT-T V.29 Rec.
Only 32 timeslots of 256 can be scrambled or/and descrambled:
GCI side, only B1 and B2 can be selected in each GCI channel (16 GCI channels are available:
8 per GCI multiplex).
*TDMside,it is forbiddento select a giventimeslot morethanoncewhenseveralTDMsare selected.
SCR=0,thescramblerorthedescrambleraredisabled;thecontentsofoutputtimeslotsarenotmodified.
VIII.9 - Connection Memory Address Register - CMAR (10)H
ACCESS MODE REGISTER (AMR)
DESTINATION REGISTER (DSTR)
bit15
bit8
Nu
Nu
TC
CACL CAC
BID
CM
bit7
READ OM2
bit 0
OM1
OM0 OTS4 OTS3 OTS2 OTS1 OTS0
After reset (0800)H
This 16 bit register is constitutedby two registers : DESTINATIONREGISTER (DSTR) and ACCESSMODE
REGISTER (AMR) respectively 8 bits and 6 bits.
DESTINATION REGISTER (DSTR)
When DSTR Register is written by the microprocessor, a memory access is launched. DSTR has two use
modes depending on CM (bit of CMAR).
CM = 1, access to connection memory (read or write) ;
OTS 0/4 : Output time slot 0/4 define OTSy with : 0 ≤ y ≤ 31,
OM0/2 : Output Time Division Multiplex 0/2 define OTDMq with : 0 ≤ q ≤ 7.
See table hereafter when DR04, DR24, DR44 and/or DR64 are at “1”; the bits of SMCR define the TDMs
at 4 Mbit/s.
The IM2/1 bits of Source Register (SRCR of CMDR) indicate the DIN pin number and the OM2/1 bits of
Destination Register (DSTR of CMAR) indicate the Dout pin number.
IM2 (bit7)
IM1 (bit6)
DIN pin
OM2 (bit7)
OM1(bit6)
DOUT pin
0
0
DIN0
0
0
DOUT0
0
1
DIN2
0
1
DOUT2
1
0
DIN4
1
0
DOUT4
1
1
DIN6
1
1
DOUT6
The ITS4/0 and IM0 bits of Source Register (SRCR of CMDR) indicate the input timeslot number. (IM0 bit
is the Least Significant Bit; it indicates either even timeslot or odd timeslot.
ITS4
(bit4)
ITS3
(bit3)
ITS2
(bit2)
ITS1
(bit1)
ITS0
(bit0)
IMO
(bit5)
Input timeslot number
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
2
0
0
0
0
1
1
3
1
1
1
1
1
1
63
=
=
77/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
The OTS4/0 and OM0 bits of Destination Register (DSTR of CMAR) indicate the output timeslot number.
(OM0 bit is the Least Significant Bit; it indicates either even timeslot or odd timeslot
OTS4
(bit4)
OTS3
(bit3)
OTS2
(bit2)
OTS1
(bit1)
OTS0
(bit0)
OMO
(bit5)
Output timeslot number
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
2
0
0
0
0
1
1
3
=
1
1
1
=
1
1
1
63
Nota Bene:
- CLOCK A/B is at 4 or at 8 MHz in accordance with HCL bit of General Configuration Register GCR (02).
HCL=1, bit clock frequency is at 8 192 KHz.
For a TDM at 4 Mbit/s or 2Mbit/s, each received bit is sampled at 3/4 bit-time.
HCL=0, bit clock frequency is at 4 096 KHz
For a TDM at 4 Mbit/s, each received bit is sampled at half bit-time.
For a TDM at 2 Mbit/s, each received bit is sampled at 3/4 bit-time.
The definition of IMCRO/1, OMCRO/1 are kept with bit time = 244 ns
Remarks:
- OM0, bit5 of DSTR indicates either even TDM or odd TDM if TDM at 2 Mb/s.
- OM0, bit5 of DSTR indicates either even Output timeslot or odd Output timeslot if TDM at 4 Mb/s.
- IM0, bit5 of SRCR indicates either even TDM or odd TDM if TDM at 2 Mb/s.
- IM0, bit5 of SRCR indicates either even Output timeslot or odd Output timeslot if TDM at 4 Mb/s.
- CAC = CACL = 0, DSTR is the Address Register of the Connection Memory;
- CAC or CACL = 1, DSTR is used to indicate the current address for the Connection Memory ; its contents
is assigned to the outputs.
CM = 0, access to data memory (read only) ;
- DSTR is the Address Register of the Data Memory; its contents is assigned to the inputs.
ACCESS MODE REGISTER (AMR)
READ : READ MEMORY
READ = 1, Read Connection Memory (or Data Memory in accordance with CM).
READ = 0, Write Connection Memory.
CM
: CONNECTION MEMORY
CM = 1, Write or Read Connection Memory in accordance with READ.
CM = 0, Read only Data Memory (READ = 0 has no effect).
BID
: BIDIRECTIONAL CONNECTION
BID = 1; Two connections are set up:
ITSx ITDMp ------> OTSy OTDMq (LOOP of CMDR Register is taken into account) and
ITSy ITDMq ------> OTSx OTDMp (LOOP of CMDR Register is not taken into account).
BID = 0; One connection is set up:
ITSx ITDMp ------> OTSy OTDMq only.
CAC
78/101
: CYCLICAL ACCESS
CAC = 1 (BID is ignored)
if Write Connection Memory, an automatic data write from Connection Memory Data Register
(CMDR) up to 256 locations of ConnectionMemory occurs. The first address is indicated by the
register DSTR, the last is (FF)H.
if Read Connection Memory, an automatic transfer of data from the location indicated by the
register (DSTR) into Connection Memory Data Register (CMDR) after reading by the
microprocessor occurs. The last location is (FF)H.
CAC = 0, Write and Read Connection Memory in the normal way.
STLC5465B
VIII - INTERNAL REGISTERS (continued)
CACL : CYCLICAL ACCESS LIMITED
CACL = 1 (BID is ignored)
If Write Connection Memory, an automatic data write from Connection Memory Data Register
(CMDR) up to 32 locations of Connection Memory occurs. The first location is indicated by OTS
0/4bits of the register (DSTR) related to OTDMq as defined by OM0/2 occurs. The last location
is q +1 F(H).
If Read Connection Memory, an automatic transfer of data from Connection Memory into
Connection Memory Data Register (CMDR) after reading this last by the microprocessor
occurs.The first location is indicated by OTS 0/4 bits of the register (DSTR) related to OTDMq
as defined by OM0/2. The last location is q +1 F(H).
CACL = 0, Write and Read Connection Memory in the normal way.
TC
: Transparent Connection
TC = 1, (BID is ignored), if READ = 0 :
CAC = 0 and CACL = 0. The DSTR bits are taken into account instead of SRCR bits. SRCR bits
are ignored (Destination and Source are identical). The contents of Input time slot i - Input
multiplex j is switched into Output time slot i - Output multiplex j.
CAC = 0 and CACL = 1. Up to 32 ”Transparent Connections” are set up.
CAC = 1 and CACL = 0. Up to 256 ”Transparent Connections” are set up.
TC = 0, Write and Read Connection Memory are in accordance with BID.
VIII.10 - Sequence Fault Counter Register - SFCR (12)H
bit15
F15
F14
F13
F12
F11
F10
F9
bit8
bit7
F8
F7
bit 0
F6
F5
F4
F3
F2
F1
F0
After reset (0000)H
When this register is read by the microprocessor, this register is reset (0000)H.
F0/15 : FAULT0/15
Number of faults detected by the Pseudo Random Sequence analyzer if the analyzer has been
validated and has recovered the receive sequence.
When the Fault Counter Register reaches (00FF)H it stays at its maximum value.
NB. As the SFCR is reset after reading, a 8-bit microprocessor must read the LSB that will represent the
number of faults between 0 and 255. To avoid overflow escape notice, it is necessaryto start counting
at FF00h, by writing this value in SFCR before launching PRSA. If there are more than FFh errors, the
SFCO interrupt bit (see interrupt register IR -38H address) will signal that the fault count register has
reached the value FFFFh (because of the number of faults exceeded 255).
VIII.11 - Time Slot Assigner Address Register - TAAR (14)H
bit15
TS4
TS3
TS2
TS1
TS0
READ
Nu
bit8
bit7
HDI
r
bit 0
e
s
e
r
v
e
d
After reset (0100)H
READ : READ MEMORY
READ = 1, Read Time slot Assigner Memory.
READ = 0, Write Time slot Assigner Memory.
TS0/4 : TIME SLOTS0/4
These five bits define one of 32 time slots in which a channel is set-up or not.
79/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
HDI
N.B.
: HDLC INIT
HDI = 1, TSA Memory, Tx HDLC, Tx DMA, Rx HDLC, Rx DMA and GCI controllers are reset
within 250ms. An automate writes data from Time slot Assigner Data Register (TADR) (except
CH0/4 bits) into each TSA Memory location. If the microprocessor reads Time slot Assigner
Memory after HDLC INIT, CH0/4 bits of Time slot Assigner Data Register are identical to TS0/4
bits of Time slot Assigner Address Register.
HDI = 0, Normal state.
After software reset (bit 2 of IDCR Register) or pin reset the automate above-mentioned is
working. The automate is stopped when the microprocessor writes TAAR Register with HDI = 0.
VIII.12 - Time Slot Assigner Data Register - TADR (16)H
bit15
V11
V10
V9
V8
V7
V6
V5
bit8
bit7
V4
V3
bit 0
V2
V1
CH4
CH3
CH2
CH1
CH0
After reset (0000)H
CH0/4 : CHANNEL0/4
These five bits define one of 32 channels associated to TIME SLOT defined by the previous
Register (TAAR).
V1/8 : VALIDATION
The logical channel CHx is constituted by each subchannel 1 to 8 and validated by V1/8 bit at
1 respectively.
V1 to V8 at 0: the subchannels are ignored
V1 at 1: the first bit of the current time slot is taken into account in reception the first bit received
and in transmission the first bit transmitted.
V8 at 1: the last bit of the current time slot is taken into account in reception the last bit received
and in transmission the last bit transmitted in transmission.
V9
: VALIDATION SUBCHANNEL
V 9 = 1, each V1/8 bit is taken into account once every 250ms.
In transmit direction, data is transmitted consecutively during the time slot of the current frame
and during the same time slot of the next frame.Id est.: the same data is transmitted in two
consecutive frames.
In receive direction, HDLC controller fetches data during the time slot of the current frame and
ignores data during the same time slot of the next frame.
V 9 = 0, each V1/8 bit is taken into account once every 125ms.
V10
: DIRECT MHDLC ACCESS
If V10 = 1, the Rx HDLC Controller receives data issued from DIN8 input during the current time
slot (bits validated by V1/8) and DOUT6 output transmits data issued from the Tx HDLC
Controller.
If V10 = 0, the Rx HDLC Controller receives data issued from the matrix output 7 during the
current time slot ; DOUT6 output delivers data issued from the matrix output 6 during the same
current time slot.
N.B : If D7 = 1, (see ”General Configuration Register GCR (02)H”) the Tx HDLC controller is
connected to matrix input 7 continuously so the HDLC frames can be sent to any DOUT (i.e.
DOUT0 to DOUT7).
V11
: VALIDATION of CB pin
This bit is not taken into account if CSMA = 1 (HDLC Transmit Command Register).
if CSMA = 0 :
V11 = 1, Contention Bus pin is validated and Echo pin (which is an input) is not taken into
account.
V11 = 0, ContentionBus pin is high impedance during the current time slot (This pin is an open
drain output).
80/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
VIII.13 - HDLC Transmit Command Register - HTCR (18)H
bit15
CH4
CH3
CH2
CH1
CH0
READ
Nu
bit8
bit7
CF
PEN
bit 0
CSMA
NCRC
F
P1
P0
C1
C0
After reset (0000)H
READ : READ COMMAND MEMORY
READ = 1, READ COMMAND MEMORY.
READ = 0, WRITE COMMAND MEMORY.
CH0/4 : These five bits define one of 32 channels.
C1/C0 : COMMAND BITS
P0/1
C1
C0
Commands Bits
0
0
ABORT ; if this command occurs during the current frame, HDLC Controller transmits seven ”1”
immediately, afterwards HDLC Controller transmits ”1” or flag in accordance with F bit, generates
an interrupt and waits new command such as START orn CONTINUE.
If this command occurs after transmitting a frame, HDLC Controller generates an interrupt and
waits a new command such as START or CONTINUE.
0
1
START ; Tx DMA Controller is now going to transfer first frame from buffer related to initial
descriptor. The initial descriptor address is provided by the Initiate Block located in external
memory.
1
0
CONTINUE ; Tx DMA Controller is now going to transfer next frame from buffer related to next
descriptor. The next descriptor address is provided by the previous descriptor from which the
related frame had been already transmitted.
1
1
HALT ; after transmitting frame, HDLC Controller transmits ”1” or flag in accordance with F bit,
generates an interrupt and is waiting new command such as START or CONTINUE.
: PROTOCOL BITS
P1
P0
Transmission Mode
0
0
HDLC
0
1
Transparent Mode 1 (per byte) ; the fill character defined in FCR Register is taken into account.
1
0
Transparent Mode 2 (per byte) ; the fill character defined in FCR Register is not taken into account.
1
1
Reserved
F
: Flag
F = 1 ; flags are transmitted betweenclosing flag of currentframe and opening flag of next frame.
F = 0 ; ”1” are transmitted between closing flag of current frame and opening flag of next frame.
NCRC : CRC NOT TRANSMITTED
NCRC = 1, the CRC is not transmitted at the end of the frame.
NCR C =0, the CRC is transmitted at the end of the frame.
CSMA : Carrier Sense Multiple Access with Contention Resolution
CSMA = 1, CB output and the Echo Bit are taken into account during this channel transmission
by the Tx HDLC.
CSMA = 0, CB output and the Echo Bit are defined by V11 (see ” Time slot Assigner Data
Register TADR (16)H”).
81/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
PEN
CF
: CSMA PENALTY significant if CSMA = 1
PEN = 1, the penalty value is 1 ; a transmitter which has transmitted a frame correctly will count
(PRI +1) logic one received from Echo pin before transmitting next frame. (PRI, priority class 8
or 10 given by the buffer descriptor related to the frame.
PEN = 0, the penalty value is 2 ; a transmitter which has transmitted a frame correctly will count
(PRI +2) logic one received from Echo pin before transmitting next frame. (PRI, priority class 8
or 10 given by the transmit descriptor related to the frame).
: Common flag
CF = 1, the closing flag of previous frame and opening flag of next frame are identical if the next
frame is ready to be transmitted.
CF = 0, the closing flag of previous frame and opening flag of next frame are distinct.
VIII.14 - HDLC Receive Command Register - HRCR (1A)H
bit15
CH4
CH3
CH2
CH1
CH0
READ
AR21
bit8
bit7
AR20
AR11
bit 0
AR10
CRC
FM
P1
P0
C1
C0
After reset (0000)H
READ : READ COMMAND MEMORY
READ = 1, READ COMMAND MEMORY.
READ = 0, WRITE COMMAND MEMORY.
CH0/4 : These five bits define one of 32 channels.
C1/C0 : COMMAND
P0/1
FM
CRC
82/101
C1
C0
Commands Bits
0
0
ABORT ; if this command occurs during receiving a current frame, HDLC Controller stops the
reception, generates an interrupt and waits new command such as START orn CONTINUE.
If this command occurs after receiving a frame, HDLC Controller generates an interrupt and waits
a new command such as START or CONTINUE.
0
1
START ; Rx DMA Controller is now going to transfer first frame into buffer related to the initial
descriptor. The initial descriptor address is provided by the Initiate Block located in external
memory.
1
0
CONTINUE ; Rx DMA Controller is now going to transfer next frame into buffer related to next
descriptor. The next descriptor address is provided by the previous descriptor from which the
related frame had been already received.
1
1
HALT ; after receiving frame, HDLC Controller stops the reception, generates an interrupt and
waits a new command such as START or CONTINUE.
: PROTOCOL BITS
P1
P0
0
0
HDLC
Transmission Mode
0
1
Transparent Mode 1 (per byte) ; the fill character defined in FCR Register is taken into account.
1
0
Transparent Mode 2 (per byte) ; the fill character defined in FCR Register is not taken into account.
1
1
Reserved
: Flag Monitoring.
This bit is a status bit read by the microprocessor.
FM=1: HDLC Controller is receiving a frame or HDLC Controller has just received one flag.
FM is put to 0 by the microprocessor.
: CRC stored in external memory
CRC = 1, the CRC is stored at the end of the frame in external memory.
CRC = 0, the CRC is not stored into external memory.
STLC5465B
VIII - INTERNAL REGISTERS (continued)
AR10 : Address Recognition10
AR10 = 1, First byte after opening flag of received frame is compared to AF0/7 bits of AFRDR.
If the first byte received and AF0/7 bits are not identical the frame is ignored.
AR10 = 0, First byte after openingflag of receivedframe is not compared to AF0/7 bits of AFRDR
Register.
AR11 : Address Recognition 11
AR11 = 1, First byte after opening flag of received frame is compared to all ”1”s.If the first byte
received is not all ”1”s the frame is ignored.
AR11 = 0, First byte after opening flag of received frame is not compared to all ”1”s.
AR20 : Address Recognition 20
AR20 = 1, Secondbyte after opening flag of receivedframe is comparedto AF8/15bits of AFRDR
Register. If the second byte received and AF8/15 bits are not identical the frame is ignored.
AR20 = 0, Second byte after opening flag of received frame is not compared to AF8/15 bits of
AFRDR Register.
AR21 : Address Recognition 21
AR21 = 1, Second byte after opening flag of received frame is compared to all ”1”s. If the
Second byte received is not all ”1”s the frame is ignored.
AR21 = 0, Second byte after opening flag of received frame is not compared to all ”1”s.
Second Byte
First Byte
AR21 AR20 AR11 AR10
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
1
0
0
1
1
1
1
1
0
0
0
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
Conditions to Receive a Frame
Each frame is received without condition.
Only value of the first received byte must be equal to that of AF0/7 bits.
Only value of the first received byte must be equal to all ”1”s.
The value of the first received byte must be equal either to that of AF0/7 or
to all ”1”s.
Only value of the second received byte must be equal to that of AF8/15 bits.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal to that of AF8/15 bits.
The value of first received byte is must be equal to all ”1”s and the value of
second received byte must be equal to that of AF8/15 bits.
The value of the first received byte must be equal either to that of AF0/7 or
to all ”1”s and the value of the second received byte must be equal to that
of AF8/15 bits.
Only the value of the second received byte must be equal to all ”1”s.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal to all ”1”s.
The value of the first received byte must be equal to all ”1”s and the value of
the second received byte must be equal to ”1” also.
The value of the first received byte must be equal either to that of AF0/7 or
to ”1” and the value of the second received byte must be equal to all ”1”s.
The value of the second received byte must be equal either to that of AF8/15
or to all ”1”s.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal either to that of AF8/15
or to all ”1”s.
The value of the first received byte must be equal to ”1” and the value of the
second received byte must be equal either to that of AF8/15 or to all ”1”s.
The value of the first received byte must be equal either to that of AF0/7 or
to ”1” and the value of the second received byte must be equal either to that
of AF8/15 or to all ”1”s.
83/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
VIII.15 - Address Field Recognition Address Register - AFRAR (1C)H
bit15
CH4
CH3
CH2
CH1
CHO
READ
AMM
bit8
bit7
Nu
r
bit 0
e
s
e
r
v
e
AF3/
AFM3
AF2/
AFM2
AF1/
AFM1
d
After reset (0000)H
The write operation is lauched when AFRAR is written by the microprocessor.
AMM : Access to Mask Memory.
AMM=1, Access to Address Field Recognition Mask Memory.
AMM=0, Access to Address Field Recognition Memory.
READ : READ ADDRESS FIELD RECOGNITION MEMORY
READ=1, READ AFR MEMORY.
READ=0, WRITE AFR MEMORY.
CH0/4 : These five bits define one of 32 channels in reception
VIII.16 - Address Field Recognition Data Register - AFRDR (1E)H
bit15
AF15/ AF14/ AF13/ AF12/ AF11/ AF10/ AF9/
AFM15 AFM14 AFM13 AFM12 AFM11 AFM10 AFM9
bit8
bit7
AF8/
AFM8
AF7/
AFM7
bit 0
AF6/
AFM6
AF5/
AFM5
AF4/
AFM4
AF0/
AFMO
After reset (0001)H
AF0/15 : ADDRESS FIELD BITS
AF0/7 ; First byte received; AF8/15: Second byte received.
These two bytes are stored into Address Field Recognition Memory when AFRAR is written by
the microprocessor.
AFM0/
ADDRESS FIELD BIT MASK0/15 if AMM=1 (AMM bit of AFRAR)
15:
AMF0/7. When AR10=1 (See HRCR) each bit of the first received byte is compared respectively
to AFx bit if AFMx=0. In case of mismatching, the received frame is ignored. If AFMx=1, no
comparison between AFx and the corresponding received bit.
AMF8/15. When AR20=1 (See HRCR) each bit of the second received byte is compared
respectively to AFy bit if AFMy=0. In case of mismatching, the received frame is ignored. If
AFMy=1, no comparison between AFy and the corresponding received bit.
These two bytes are stored into AddressField Recognition Mask Memory when AFRAR is written
by the microprocessor (AMM=1).
VIII.17 - Fill Character Register - FCR (20)H
bit15
r
e
s
e
r
v
e
bit8
bit7
d
FC7
bit 0
FC6
FC5
FC4
FC3
FC2
FC1
FC0
After reset (0000)H
FC0/7 : FILL CHARACTER (eight bits)
In TransparentMode M1, twomessages are separatedby FILLCHARACTERS andthe detection
of one FILL CHARACTER marks the end of a message.
VIII.18 - GCI Channels Definition Register 0 - GCIR0 (22)H
The definitions of x and y indices are the same for GCIR0, GCIR1, GCIR2, GCIR3 :
- 0 ≤ x ≤ 7, 1 of 8 GCI CHANNELS belonging to the same multiplex TDM4 or TDM5
- y = 0, TDM4 is selected
- y = 1, TDM5 is selected.
84/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
bit15
bit8
bit7
bit 0
ANA11 VCI11 V*11 VM11 ANA10 VCI10 V*10 VM10 ANA01 VCI01 V*01 VM01 ANA00 VCI00 V*00 VM00
TDM5
TDM4
TDM5
GCI CHANNEL 1
TDM4
GCI CHANNEL 0
After reset (0000)H
VMxy : VALIDATION of MONITOR CHANNELx, MULTIPLEX y :
When this bit is at 1, monitor channel xy is validated.
When this bit is at 0, monitor channel xy is not validated.
On line to reset (if necessary)one MON channel which had been selectedpreviously VMxy must
be put at 0 during 125ms before reselecting this channel. Deselecting one MON channel during
125ms resets this MON channel.
V*xy : VALIDATION of V Starx, MULTIPLEX y
When this bit is at 1, V Star protocol is validated if VMxy=1.
When this bit is at 0, GCI Monitor protocol is validated if VMxy=1.
VCxy : VALIDATION of Command/Indicate CHANNEL x, MULTIPLEXy
When this bit is at 1, Command/Indicate channelxy is validated.
When this bit is at 0, Command/Indicate channelxy is not validated.
It is necessary to let VCxy at ”0” during 125ms to initiate the Command/Indicate channel.
ANAxy : ANALOG APPLICATION
When this bit is at 1, Primitive has 6 bits if C/Ixy is validated.
When this bit is at 0, Primitive has 4 bits if C/Ixy is validated.
VIII.19 - GCI Channels Definition Register 1 - GCIR1 (24)H
bit15
bit8
bit7
bit 0
ANA31 VCI31 V*31 VM31 ANA30 VCI30 V*30 VM30 ANA21 VCI21 V*21 VM21 ANA20 VCI20 V*20 VM20
TDM5
TDM4
TDM5
GCI CHANNEL 3
TDM4
GCI CHANNEL 2
After reset (0000)H
For definition see GCI Channels Definition Register above.
VIII.20 - GCI Channels Definition Register 2 - GCIR2 (26)H
bit15
bit8
bit7
bit 0
ANA51 VCI51 V*51 VM51 ANA50 VCI50 V*50 VM30 ANA41 VCI41 V*41 VM41 ANA40 VCI40 V*40 VM40
TDM5
TDM4
TDM5
GCI CHANNEL 5
TDM4
GCI CHANNEL 4
After reset (0000)H
For definition see GCI Channels Definition Register above.
VIII.21 - GCI Channels Definition Register 3 - GCIR3 (28)H
bit15
bit8
bit7
bit 0
ANA71 VCI71 V*71 VM71 ANA70 VCI70 V*70 VM70 ANA61 VCI61 V*61 VM61 ANA60 VCI60 V*60 VM60
TDM5
TDM4
TDM5
GCI CHANNEL 7
TDM4
GCI CHANNEL 6
After reset (0000)H
For definition see GCI Channels Definition Register above.
85/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
VIII.22 - Transmit Command / Indicate Register - TCIR (2A)H
bit15
D
G0
CA2
CA1
CA0
READ
0
bit8
bit7
0
Nu
bit 0
Nu
C6A
C5/E C4/S1 C3/S2 C2/S3 C1/S4
After reset (00FF)H
When this register is written by the microprocessor, these different bits mean :
READ : READ C/I MEMORY
READ = 1, READ C/I MEMORY.
READ = 0, WRITE C/I MEMORY.
CA 0/2 : TRANSMIT COMMAND/INDICATE MEMORY ADDRESS
CA 0/2 : These bits define one of eight Command/Indicate Channels.
G0
: This bit defines one of two GCI MULTIPLEXy.
G0 = 0, GCI0 (DIN4/DOUT4) is selected.
G0 = 1, GCI1 (DIN5/DOUT5) is selected.
D
: Destination; this bit defines the destination of bits 0 to 5.
D=0: the primitive C6 to C1 is transmitted directly into one of 16 GCI channels defined by G0
and CA 0/2.
D=1: the 6 bit word A, E, S1, S2, S3, S4 is put instead of the six bits received latest during the
timeslot 4n+3 (GCI channel defined by G0 and CA 0/2) and these 6 bit word is transmitted into
any selected output timeslot after switching.
bit15
bit8
bit7
D=0
G0
CA2
CA1
CA0
READ
Nu
Nu
Nu
Nu
C6
C5
C4
C3
C2
C1
D=0
G0
CA2
CA1
CA0
READ
Nu
Nu
Nu
Nu
A
E
S1
S2
S3
S4
C6/1
bit 0
: New Primitive to be transmitted to the selected GCI channel (DOUT4 or DOUT5). Case of D=0.
C6 is transmitted first if ANA=1.
C4 is transmitted first if ANA=0.
A, E, S1 to S4: New 6 bit word to be transmitted into any output timeslot. Case of D=1.
The New Primitive (or the 6 bit word) is taken into account by the transmitter after writing bits 8 to 15 (if
8bit microprocessor).
Transmit Command/Indicate Register (after reading)
bit15
bit8
bit7
D=0
G0
CA2
CA1
CA0
READ
Nu
Nu
PT1
PT0
C6
C5
C4
C3
C2
bit 0
C1
D=1
G0
CA2
CA1
CA0
READ
Nu
Nu
PT1
PT0
A
E
S1
S2
S3
S4
When this register is read by the microprocessor, these different bits mean :
READ : READ C/I MEMORY
READ = 1, READ C/I MEMORY.
READ = 0, WRITE C/I MEMORY.
CA 0/2 : TRANSMIT C/I ADDRESS
CA 0/2 : These bits define one of eight Command/Indicate Channels.
G0
: This bit defines one of two GCI multiplexes.
G0 = 0, DIN4/DOUT4 are selected.
G0 = 1, DIN5/DOUT5 are selected.
D
: Destination. This bit defines the destination of bits 0 to 5
D=0: the destination is one of 16 GCI channels defined by G0 and CA 0/2.
D=1:the destination is any TDM (after switching).
C6/1 : Last Primitive transmitted. Case of D=1
86/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
A, E, S1 to S4: 6 bit word transmitted. Case of D=1.
PT0/1 : Status bits
P1
0
0
1
1
P0
0
1
0
1
Primitive (or 6
Primitive (or 6
Primitive (or 6
Primitive (or 6
Primitive Status
bit word) has not been transmitted yet.
bit word) has been transmitted once.
bit word) has been transmitted twice.
bit word) has been transmitted three times or more.
VIII.23 - Transmit Monitor Address Register - TMAR (2C)H
bit15
0
G0
MA2
MA1
MA0
READ
Nu
bit8
bit7
Nu
Nu
bit 0
Nu
TIV
FABT
L
NOB
0
Nu
After reset (000F)H
When this register is written by the microprocessor, these different bits mean :
READ : READ MON MEMORY
READ=1, READ MON MEMORY.
READ=0, WRITE MON MEMORY.
MA 0/2 : TRANSMIT MONITOR ADDRESS
MA 0/2 :These bits define one of eight Monitor Channel if validated.
G0
: This bit defines one of two GCI multiplexes.
G0 = 0, TDM4 is selected.
G0 = 1, TDM5 is selected.
NOB : NUMBER OF BYTE to be transmitted
NOB = 1, One byte to transmit.
NOB = 0, Two bytes to transmit.
L
: Last byte
L = 1, the word (or the byte) located in the Transmit Monitor Data Register (TMDR) is the last.
L = 0, the word (or the byte) located in the Transmit Monitor Data Register (TMDR) is not the
last.
FABT : FABT = 1, the current message is aborted by the transmitter.
TIV
: Timer interrupt is Validated
TIV = 1, Time Out alarm generates an interrupt when the timer has expired.
TIV = 0, Time Out alarm is masked.
If 8 bit microprocessor the Data (TMDR Register) is taken into account by the transmitter after writing bits
8 to 15 of this register.
Transmit Monitor Address Register (after reading)
bit15
0
G0
MA2
MA1
MA0
READ
Nu
bit8
bit7
Nu
Nu
bit 0
Nu
TO
ABT
L
NOBT EXE
IDLE
When this register is read by the microprocessor, these different bits mean :
READ, MA0/2, G0 have same definition as already described for the write register cycle.
IDLE
EXE
: When this bit is at ”1”, IDLE (all 1’s) is transmitted during the channel validation.
: EXECUTED
When this status bit is at ”1”, the command written previously by the microprocessor has been
executed and a new word can be stored in the Transmit Monitor Data Register (TMDR) by the
microprocessor.
When this bit is at ”0”, the command written previously by the microprocessor has not yet been
executed.
87/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
NOBT : NUMBER OF BYTE which has been transmitted.
NOBT = 1, the first byte is transmitting.
NOB T = 0, the second byte is transmitting, the first byte has been transmitted.
L
: Last byte ; this L bit is the L bit which has been written by the microprocessor.
ABT
: ABORT
ABT=1, the remote receiver has aborted the current message.
TO
: Time Out one millisecond
TO = 1, the remote receiver has not acknowledged the byte which has been transmitted one
millisecond ago.
VIII.24 - Transmit Monitor Data Register - TMDR (2E)H
bit15
M18
M17
M16
M15
M14
M13
M12
bit8
bit7
M11
M08
bit 0
M07
M06
M05
M04
M03
M02
M01
After reset (FFFF) H
M08/01 : First Monitor Byte to transmit. M08 bit is transmitted first.
M18/11 : Second Monitor Byte to transmit if NOB = 0 (bit of TMAR). M18 bit is transmitted first.
VIII.25 - Transmit Monitor Interrupt Register - TMIR (30)H
bit15
MI71
TDM5
MI61
MI51
MI41
MI31
MI21
MI11
bit8
bit7
MI01
MI70
TDM4
MI60
MI50
MI40
MI30
bit 0
MI20
MI10
MI00
After reset (0000)H
When the microprocessor read this register, this register is reset (0000)H.
MIxy
: Transmit Monitor Channel x Interrupt, Multiplex y with :
0 ≤ x ≤ 7, 1 of 8 GCI CHANNELS belonging to the same multiplex TDM4 or TDM5
y = 0, GCI CHANNEL belongs to the multiplex TDM4 and y = 1 to TDM5.
MIxy = 1 when :
- a word has been transmitted and pre-acknowledged by the Transmit Monitor Channel xy (In
this case the Transmit Monitor Data Register (TMDR) is available to transmit a new word) or
- the message has been aborted by the remote receive Monitor Channel or
- the Timer has reached one millisecond (in accordancewith TIV bit of TMAR) by IM3 bit of IMR.
When MIxy goes to ”1”, the Interrupt MTX bit of IR is generated. Interrupt MTX can be masked.
VIII.26 - Memory Interface Configuration Register - MICR (32)H
bit15
P41
P40
P31
P30
P21
P20
P11
bit8
bit7
P10
Z
bit 0
W
V
U
T
S
R
REF
After reset (E4F0) H
REF
: MEMORY REFRESH
REF = 1, DRAM REFRESH is validated,
REF = 0, DRAM REFRESH is not validated.
R,S,T : These three bits define the external RAM circuit organization (1word=2bytes)
The cycle duration is always 15.625ms (512 periods of the clock applied on XTAL1 pin).
T
0
0
0
0
1
1
S
0
0
1
1
0
0
R
0
1
0
1
0
1
If refresh
128K x 8 SRAM circuit (up to 512K words)
512K x 8 SRAM circuit (up to 512K words)
256K x 16 DRAM circuit (up to 1M word)
1M x 4 (or 16) bits DRAM circuit (up to 4M words)
4M x 4 (or 16) bits DRAM circuit (up to 8M words)
101 to 111 not used (this writting is forbidden)
512 cycles / 8ms
1024 cycles / 16ms
2048 cycles / 32ms
The cycle duration is always 15.625ms (512 periods of the clock applied on XTAL1 Pin).
88/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
U,V,W,Z : These four bits define the different signals delivered by the MHDLC.
First Case : the external RAM circuit is DRAM (T = 1 or S = 1)
- U defines the time Tu comprised between beginning of cycle and falling edge of NRAS :
U = 1, Tu = 60ns - U = 0, Tu = 30ns
- V defines the time Tv comprised between falling edge of NRAS and falling edge of NCAS :
V = 1, Tv = 60ns - V = 0, Tv = 30ns
- W defines the time Tw comprised between falling edge of NCAS and rising edge of NCAS :
W = 1, Tw = 60ns - W = 0, Tw = 30ns
- Z defines the time Tz comprised between rising edge of NCAS and end of cycle :
Z = 1, Tz = 60ns - Z = 0, Tz = 30ns
The total cycle is Tu + Tv + Tw + Tz.
The different output signals are high impedance during 15ns before the end of each cycle.
Second Case : the external RAM circuit is SRAM (T = 0 or S = 0)
- U and V define a part of write cycle for SRAM : the time Tuv comprised between falling edge
and rising edge of NCE. The total of write cycle is : 15ns+Tuv + 15ns.
V
0
0
1
1
U
0
1
0
1
Tuv
30ns
60ns
90ns
120ns
- W and Z define a part of read cycle for SRAM : the time Twz comprised between falling edge
of NOE and rising edge of NOE. The total of read cycle is : Twz +30ns
Z
0
0
1
1
W
0
1
0
1
Twz
30ns
60ns
90ns
120ns
N.B. The different output signals are high impedance during 15ns before the end of each cycle. On the outside of each (DRAM
or SRAM) cycle all the outputs are high impedance or not in accordance with MBL bit (see ”MBL : Memory Bus Low
impedance”).
Memory
bit15
bit8
P4E1 P4E0 P3E1 P3E0 P2E1 P2E0 P1E1 P1E0
bit7
Z
bit 0
W
V
U
T
S
R
REF
After reset (E4F0) H
P1 E0/1 : PRIORITY 1 for entity defined by E0/1
P2 E0/1 : PRIORITY 2 for entity defined by E0/1
P3 E0/1 : PRIORITY 3 for entity defined by E0/1
P4 E0/1 : PRIORITY 4 for entity defined by E0/1
Entity definition :
E1
0
0
1
1
E0
0
1
0
1
Entity
Rx DMA Controller
Microprocessor
Tx DMA Controller
Interrupt Controller
89/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
PRIORITY 5 is the last priority for DRAM Refresh if validated. DRAM Refresh obtains PRIORITY 0 (the
first priority) automatically when the first half cycle is spent without access to memory.
After reset (E400)H , the Rx DMA Controller has the PRIORITY 1
the Microprocessor has the PRIORITY 2
the Tx DMA Controller has the PRIORITY 3
the Interrupt Controller has the PRIORITY 4
the DRAM Refresh has the PRIORITY 5
VIII.27 - Initiate Block Address Register - IBAR (34)H
bit15
A23
A22
A21
A20
A19
A18
A17
bit8
bit7
A16
A15
bit 0
A14
A13
A12
A11
A10
A9
A8
After reset (0000)H
A8/23 : Address bits. These 16 bits are the segment address bits of the Initiate Block (A8 to A23 for the
external memory in the MHDLC address space).The offset is zero (A0 to A7 =”0”).
The Initiate Block Address (IBA) is :
23
8
7
0
A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 0 0 0 0 0 0 0 0
The 23 more significant bits define one of 8 Megawords. (One word comprises two bytes.)
The least significant bit defines one of two bytes when the microprocessor selects one byte.
Example: MHDLC device address inside µP mapping = 100000H
Initiate Block address inside µP mapping = 110000H
IBAR value = (110000 - 100000)/256= 100H
VIII.28 - Interrupt Queue Size Register - IQSR (36)H
bit15
TBFS
0
0
0
0
0v
bit8
bit7
0d
HS2
0
bit 0
HS1
HS0
MS2
MS1
MS0
CS1
CS0
After reset (0000)H
CS0/1 : Command/Indicate Interrupt Queue Size
These two bits define the size of Command/Indicate Interrupt Queue in external memory.
The location is IBA + 256 + HDLC Queue size + Monitor Channel Queue Size (see The Initiate
Block Address (IBA)).
MS0/2 : Monitor Channel Interrupt Queue Size
These three bits define the size of Monitor Channel Interrupt Queue in external memory.
The location is IBA + 256 + HDLC Queue size.
HS0/2 : HDLC Interrupt Queue Size
These three bits define thesize ofHDLC status InterruptQueue in externalmemory foreach channel.
The location is IBA+256 (see The Initiate Block Address (IBA))
90/101
HS2
HS1
HS0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
HDLC
Queue Size
128 words
256 words
384 words
512 words
640 words
768 words
896 words
1024 words
MS2
MS1
MS0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
MON
Queue Size
128 words
256 words
384 words
512 words
640 words
768 words
896 words
1024 words
CS1
CS0
0
0
1
1
0
1
0
1
C/I
Queue Size
64 words
128 words
192 words
256 words
STLC5465B
VIII - INTERNAL REGISTERS (continued)
TBFS : Time Base running with Frame Synchronisation signal
TBFS=1, the Time Base defined by the Timer Register (see page 92) is running on the rising
edge of Frame Synchronisation signal.
TBFS=0, the Time Base defined by the Timer Register is running on the rising edge of MCLK
signal.
VIII.29 - Interrupt Register - IR (38)H
bit15
Nu
bit8
Nu
SFCO PRSR
TIM
bit7
INT
INT
Tx
Tx
FOV FWAR FOV FWAR
bit 0
Rx
FOV
Rx
ICOV
FWAR
MTX MRX C/IRX HDLC
After reset (0000)H
This register is read only.
When this register is read by the microprocessor, this register is reset (0000)H.
If not masked, each bit at ”1” generates ”1” on INT0 pin.
HDLC
: HDLC INTERRUPT
HDLC = 1, Tx HDLC or Rx HDLC has generated an interrupt The status is in the HDLC
queue.
C/IRX
: Command/Indicate Rx Interrupt
C/IRX = 1, Rx Commande/Indicate has generated an interrupt. The status is in the HDLC
queue.
MRX
: Rx MONITOR CHANNEL INTERRUPT
MRX = 1, one Rx MONITOR CHANNEL has generated an interrupt.The status is in the Rx
Monitor Channel queue.
MTX
: Tx MONITOR CHANNEL INTERRUPT
MTX = 1, one or several Tx MONITOR CHANNELS have generated an interrupt. Transmit
Monitor Interrupt Register (TMIR) indicates the Tx Monitor Channels which have generated
this interrupt.
ICOV
: INTERRUPT CIRCULAR OVERLOAD
ICOV = 1, One of three circular interrupt memories is completed.
RxFWAR : Rx DMA CONTROLLER FIFO WARNING
RxFWAR = 1, Rx DMA CONTROLLER has generated an interrupt, its fifo is 3/4 completed.
RxFOV
: Rx DMA CONTROLLER FIFO OVERLOAD
RxFOV = 1, Rx DMA CONTROLLER has generatedan interrupt,it cannottransfer data from
Rx HDLC to external memory, its fifo is completed.
TxFWAR : Tx DMA CONTROLLER FIFO WARNING
TxFWAR = 1, Tx DMA CONTROLLER has generated an interrupt, its fifo is 3/4 completed.
TxFOV
: Tx DMA CONTROLLER FIFO OVERLOAD
TxFOV = 1, Tx DMACONTROLLER has generated an interrupt, it cannot transfer data from
Tx HDLC to external memory, its fifo is completed.
INTFWAR : INTERRUPT CONTROLLER FIFO WARNING
INTFWAR = 1, INTERRUPT CONTROLLER has generated an interrupt, its fifo is 3/4
completed.
INTFOV
: INTERRUPT CONTROLLER FIFO OVERLOAD
INTFOV = 1, INTERRUPT CONTROLLER has generated an interrupt, it cannot transfer
status from DMA and GCI controllers to external memory, its internal fifo is completed.
TIM
: TIMER
TIM = 1, the programmable timer has generated an interrupt.
91/101
STLC5465B
VIII - INTERNAL REGISTERS (continued)
PRSR
: Pseudo Random Sequence Recovered
PRSR = 1,the Pseudo Random Sequencetransmitted by the generatorhas been recovered
by the analyzer.
: Sequence Fault Counter Overload
SFCO = 1, the Fault Counter has reached the value (00FF)H.
SFCO
VIII.30 - Interrupt Mask Register - IMR (3A)H
bit15
Nu
Nu
IM13
IM12
IM11
IM10
IM9
bit8
bit7
IM8
IM7
bit 0
IM6
IM5
IM4
IM3
IM2
IM1
IM0
bit0
bit1
bit 0
MS3
MS2
MS1
MS0
MM1
MM0
After reset (FFFF) H
IM13/0 : INTERRUPT MASK 0/7
When IM0 = 1, HDLC bit is masked.
When IM1 =1, C/IRX bit is masked.
When IM2 = 1, MRX bit is masked.
When IM3 = 1, MTX bit is masked.
When IM4 = 1, ICOV bit is masked
When IM5 = 1, RxFWAR bit is masked.
When IM6 = 1, RxFOV bit is masked.
When IM7 = 1, TxFWAR bit is masked.
When IM8 = 1, TxFOV bit is masked.
When IM9 = 1, INTFWAR bit is masked.
When IM10 = 1, INTFOV bit is masked.
When IM11 = 1, TIM bit is masked.
When IM12 = 1, PRSR bit is masked.
When IM13 = 1, SFCO bit is masked.
VIII.31 - Timer Register - TIMR (3C)H
bit15
S3
bit12
S2
S1
S0
MS9
MS8
MS7
MS6
0 to 15s
MS5
MS4
0 to 999ms
0 to
3x0.25ms
After reset (0800)H id 512ms
This programmable register indicates the time at the end of which the Watch Dog delivers logic ”1” on the
pin WDO (which is an output) but only if the microprocessor does not reset the counter assigned (with the
help of WDR bit of IDCR Identification and Dynamic Command Register) during the time defined by the
Timer Register.
The Timer Register and its counter can be used as a time base by the microprocessor. An interrupt (TIM)
is generated at each period defined by the Timer Register if the microprocessor does not reset the counter
with the help of WDR (bit of IDCR).
The Watch Dog or the Timer is incremented by the Frame Synchronisation clock (TBFS=1) or by a
submultiple of MCLK signal (TBFS=0; TBFS, bit of Interrupt Queue Size Register).
When TSV=1{Time Stamping Validated (GCR)} this programmable register is not used.
VIII.32 - Test Register - TR (3E)H
bit15
92/101
bit8
bit7
bit 0
STLC5465B
IX - EXTERNAL REGISTERS
These registers are located in shared memory. Initiate Block Address Register (IBAR) gives the Initiate
Block Address (IBA) in shared memory (see Register IBAR(34)H on Page 90).
‘Not used’ bits (Nu) are accessible by the microprocessor but the use of these bits by software is not
recommended.
IX.1 - Initialization Block in External Memory
Descriptor Address
Channel
Address
T
CH 0
R
T
CH1
R
CH 2
to
CH30
IBA+00
IBA+02
IBA+04
IBA+06
IBA+08
IBA+10
IBA+12
IBA+14
bit15
bit8
Not used
bit7
bit0
TDA High
Transmit Descriptor Address (TDA Low)
Not used
RDA High
Receive Descriptor Address (RDA Low)
Not used
TDA High
Transmit Descriptor Address (TDA Low)
Not used
RDA High
Receive Descriptor Address (RDA Low)
IBA+16
to
IBA+246
T
CH 31
R
IBA+248
IBA+250
IBA+252
IBA+254
Not used
TDA High
Transmit Descriptor Address (TDA Low)
Not used
RDA High
Receive Descriptor Address (RDA Low)
When Direct Memory Access Controller receives Start from one of 64 channels, it reads initialization block
immediately to know the first address of the first descriptor for this channel.
Bit 0 of Transmit Descriptor Address (TDA Low) and bit 0 of Receive Descriptor Address (RDA Low), are
at ZERO mandatory. This Least Significant Bit is not used by DMA Controller, The shared memory is
always a 16 bit memory for the DMA Controller.
N.B. If several descriptors are used to transmit one frame then before transmitting frame, DMA Controller
stores the address of the first Transmit Descriptor Address into this Initialization Block.
93/101
STLC5465B
IX - EXTERNAL REGISTERS (continued)
IX.2 - Receive Descriptor
This receive descriptor is located in shared memory. The quantity of descriptors is limited by the memory
size only.
15
14
RDA+00
13
12
IBC
EOQ
RDA+02
11
9
8
7
6
5
4
3
2
1
Size Of the Buffer (SOB)
Not used
RDA+04
0
0
RBA High (8 bits)
Receive Buffer Address Low (16 bits)
RDA+06
Not used
RDA+08
RDA+10
10
NRDA High (8 bits)
Next Receive Descriptor Address Low (16 bits)
FR
ABT
OVF
FCRC
Number of Bytes Received (NBR)
The 5 first words located in shared memory to RDA+00 from RDA+08 are written by the microprocessor
and read by the DMAC only. The 6th word located in shared memory in RDA+10 is written by the DMAC
only during the frame reception and read by the microprocessor.
SOB : Size Of the Buffer associated to descriptor up to 2048 words (1 word = 2 bytes).
If SOB = 0, DMAC goes to next descriptor.
RBA : Receive Buffer Address. LSB of RBA Low is at Zero mandatory.
RDA : Receive Descriptor Address.
NRDA : Next Receive Descriptor Address. LSB of NRDA Low is at Zero mandatory.
NBR : Number of Bytes Received (up to 4096).
IX.2.1 - Bits written by the Microprocessor only
IBC
EOQ
: Interrupt if the buffer has been completed.
IBC=1, the DMAC generates an interrupt if the buffer has been completed.
: End Of Queue.
EOQ=1, the DMAC stops immediately its reception generates an interrupt (HDLC = 1 in IR) and
waits a command from the HRCR (HDLC Receive Command Register).
EOQ=0, the DMAC continues.
IX.2.2 - Bits written by the Rx DMAC only
FR
ABT
OVF
FCRC
Definition
1
0
0
0
The frame has been received without error. The end of frame is in this buffer.
1
0
0
1
The frame has been received with false CRC.
0
0
0
0
If NBR is different to 0, the buffer related to this descriptor is completed.The end
of frame is not in this buffer.
0
0
0
0
If NBR is equal to 0, the Rx DMAC is receiving a frame.
0
1
0
0
ABORT. The received frame has been aborted by the remote transmitter or the
local microprocessor.
0
1
1
0
OVERFLOW of FIFO. The received frame has been aborted.
0
1
0
1
The received frame had not an integer of bytes.
IX.2.3 - Receive Buffer
Each receive buffer is defined by its receive descriptor.
The maximum size of the buffer is 2048 words (1 word=2 bytes)
15
8
RBA
SECOND BYTE LOCATION
RBA+SOB-2
LAST BYTE LOCATION
AVAILABLE in the Receive Buffer
7
Note: for Motorola processors, a swap may be necessary to read/write the Receive Buffer.
94/101
0
FIRST BYTE LOCATION
THIRD BYTE LOCATION
LAST - 1 BYTE LOCATION
AVAILABLE in the Receive Buffer
STLC5465B
IX - EXTERNAL REGISTERS (continued)
IX.3 - Transmit Descriptor
This transmit descriptor is located in shared memory. The quantity of descriptors is limited by the memory
size only.
TDA+00
15
14
13
12
BINT
BOF
EOF
EOQ
TDA+02
11
9
8
7
6
5
4
3
2
1
0
Number of Bytes to be Transmitted (NBT)
Not used
CRC PRI
C
TDA+04
TBA High (8 bits)
Transmit Buffer Address Low (16 bits)
TDA+06
Not used
TDA+08
TDA+10
10
NTDA High (8 bits)
Next Transmit Descriptor Address Low (16 bits)
CFT
ABT
UND
The 5 first words located in shared memory to TDA+00 from TDA+08 are written by the microprocessor
and read by the DMAC only. The 6th word located in shared memory in TDA+10 is written by the DMAC
only during the frame reception and read by the microprocessor.
NBT : Number of Bytes to be transmitted (up to 4096).
TBA
: Transmit Buffer Address. LSB of TBA Low is at Zero mandatory.
TDA : Transmit Descriptor Address.
NTDA : Next Transmit Descriptor Address. LSB of NTDA Low is at Zero mandatory.
IX.3.1 - Bits written by the Microprocessor only
BINT
: Interrupt at the end of the frame or when the buffer is become empty.
BINT = 1,
if EOF = 1 the DMAC generates an interrupt when the frame has been transmitted ;
if EOF = 0 the DMAC generates an interrupt when the buffer is become empty.
BINT = 0, the DMAC does not generate an interrupt during the transmission of the frame.
BOF : Beginning Of Frame
BOF = 1,the transmit bufferassociated to this transmit descriptor containsthe beginningof frame.
The DMA Controller will store automatically the current descriptor address in the Initialization
Block.
BOF = 0, the DMA Controller will not store the current descriptor address in the Initialization
Block.
EOF : End Of Frame
EOF = 1,the transmit buffer associated to this transmit descriptor contains the end of frame.
EOF = 0,the transmit buffer associated to this transmit descriptor does not contain the end of
frame.
EOQ : End Of Queue
EOQ = 1, the DMAC stops immediately its transmission, generates an interrupt (HDLC = 1 in
IR) and waits a command from the HTCR (HDLC Transmit Command Register).
EOQ = 0, the DMAC continues.
CRCC : CRC Corrupted
CRCC = 1,at the end of this frame the CRC will be corrupted by the Tx HDLC Controller.
PRI
: Priority Class 8 or 10
PRI = 1, if CSMA/CR is validated for this channel, the priority class is 8.
PRI = 0, if CSMA/CR is validated for this channel the priority class is 10.
(see Register CSMA)
95/101
STLC5465B
IX - EXTERNAL REGISTERS (continued)
IX.3.2 - Bits written by the DMAC only
CFT
ABT
UND
: Frame correctly transmitted
CFT = 1, the Frame has been correctly transmitted.
CFT = 0, the Frame has not been correctly transmitted.
: Frame Transmitting Aborted
ABT = 1, the frame has been aborted by the microprocessor during the transmission.
ABT = 0, the microprocessor has not aborted the frame during the transmission.
: Underrun
UND = 1, the transmit FIFO has not been fed correctly during the transmission.
UND = 0, the transmit FIFO has been fed correctly during the transmission.
IX.3.3 - Transmit Buffer
Each transmit buffer is defined by its transmit descriptor.
The maximum size of the buffer is 2048 words (1 word=2 bytes)
15
8
SECOND BYTE TO TRANSMIT
TBA
TBA + x ;
NBT is odd : x = NBT - 1
NBT is even : x = NBT - 2
LAST BYTE TO TRANSMIT
if NBT is even
7
0
FIRST BYTE TO TRANSMIT
THIRD BYTE TO TRANSMIT
LAST BYTE TO TRANSMIT
if NBT is odd
Note: for Motorola processors, a swap may be necessary to read/write the Receive Buffer.
IX.4 - Receive & Transmit HDLC Frame Interrupt
bit15
NS
0
Tx
A4
A3
A2
A1
bit8
bit7
A0
0
bit 0
0
0
CFT/CFR
BE/BF
HALT
EOQ
RRLF/ERF
This word is located in the HDLC interrupt queue ; IQSR Register indicates the size of this HDLC interrupt
queue located in the external memory.
NS
: New Status.
Before writing the features of event in the external memory the Interrupt Controller reads the
NS bit :
if NS = 0, the Interrupt Controller puts this bit at ‘1’ when it writes the status word of the frame
which has been transmitted or received.
if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).
When the microprocessor has read the status word, it puts this bit at ‘0’ to acknowledge the new
status. This location becomes free for the Interrupt Controller.
Transmitter
Tx
: Tx = 1, Transmitter
A4/0 : Tx HDLC Channel 0 to 31
RRLF : Ready to Repeat Last Frame
In consequenceof event suchas Abort Command HDLC, Controller is waiting Start or Continue.
EOQ : End of Queue
The Transmit DMA Controller (or the Receive DMA Controller) has encountered the current
Descriptor with EOQ at ”1”. DMA Controller is waiting ”Continue” from microprocessor.
HALT : The TransmitDMAController hasreceivedHALT from the microprocessor; it is waiting”Continue”
from microprocessor.
BE
: Buffer Empty
If BINT bit of Transmit Descriptor is at ‘1’, the Transmit DMA Controller puts BE at ”1” when the
buffer has been emptied.
CFT
: Correctly Frame Transmitted
A frame has been transmitted. This status is provided only if BINT bit of Transmit Descriptor is
at ‘1’. CFT is located in the last descriptor if several descriptors are used to define a frame.
96/101
STLC5465B
IX - EXTERNAL REGISTERS (continued)
Receiver
Tx
: Tx = 0, Receiver
A4/0 : Rx HDLC Channel 0 to 31
ERF : Error detected on Received Frame
An error such as CRC not correct, Abort, Overflow has been detected.
EOQ : End of Queue
The receive DMA Controller has encountered the current receive Descriptor with EOQ at ”1”.
DMA Controller is waiting ”Continue” from microprocessor.
HALT : The Receive DMA Controller has received HALT or ABORT (on the outside of frame) from the
microprocessor; it is waiting ”Continue” from the microprocessor.
BE
: Buffer Filled
If IBC bit of Receiver Descriptor is at ‘1’, the Receive DMA Controller puts BF at”1” when it has
filled the current buffer with data from the received frame.
CFR : Correctly Frame Received
A receive frame is ended with a correct CRC. The end ofthe frame islocated in the last descriptor
if several Descriptors.
IX.5 - Receive Command / Indicate Interrupt
IX.5.1 - Receive Command / Indicate Interrupt when TSV = 0
Time Stamping not validated (bit of GCR Register)
bit15
NS
Nu
S1
S0
G0
A2
A1
bit8
bit7
A0
Nu
bit 0
Nu
C6/A
C5/E C4/S1 C3/S2 C2/S3 C1/S4
This word is located in the Command/Indicate interrupt queue ; IQSR Register indicates the size of this
interrupt queue located in the external memory.
NS
: New Status.
Before writing the features of event in the external memory the Interrupt Controller reads the
NS bit :
if NS = 0, the Interrupt Controller puts this bit at ‘1’ when it writes the new primitive which has
been received.
if NS = 1, the Interrupt Controller puts INTFOV bit at ‘1’ to generate an interrupt (IR Interrupt
Register).
When the microprocessor has read the status word, it puts this bit at ‘0’ to acknowledge the new
status. This location becomes free for the Interrupt Controller.
S0/S1 Source of the event:
S1
S0
G0
Word stored in shared memory
0
0
0
Primitive C1/6 received from GCI Multiplex 0 corresponding to DIN4
0
0
1
Primitive C1/6 received from GCI Multiplex 1 corresponding to DIN5
0
1
0
A, E, S1/S4 bits from any input timeslot switched to one timeslot 4n+3 of GCI 0 without
outgoing to DOUT4
0
1
1
A, E, S1/S4 bits from any input timeslot switched to one timeslot 4n+3 of GCI 1 without
outgoing to DOUT5
1
0
0
AIS detected during more 30 ms from any input timeslot and switched to B1, B2
channels (16 bits) of the GCI 0 (DOUT4) in transparent mode or not
1
0
1
AIS detected during more 30 ms from any input timeslot and switched to B1, B2
channels (16 bits) of the GCI 1 (DOUT5) in transparent mode or not.
1
1
X
Reserved
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STLC5465B
IX - EXTERNAL REGISTERS (continued)
G0
: This bit defines one of two GCI y (DIN4/DOUT4 or DIN5/DOUT5).
G0 = 0, GCI0 (DIN4/DOUT4) is the source.
G0 = 1, GCI1 (DIN5/DOUT5) is the source.
A2/0 : GCI Channel 0 to 7 belonging to GCI 0 or GCI 1.
C6/1 : New Primitive received twice consecutively. Case of S0=S1=0.
A, E, S1/S4 bits received twice consecutively. Case of S0 = 1 S1 = 0.
Bit0/5 are not Significant when S0 = 0, S1 = 1.
IX.5.2 - Receive Command / Indicate Interrupt when TSV = 1
Time Stamping validated (bit of GCR Register)
bit15
bit8
bit7
NS
Nu
Nu
Nu
G0
A2
A1
A0
Nu
Nu
C6/A
bit 0
T15
T14
T13
T12
T11
T10
T9
T8
T7
T6
T5
C5/E C4/S1 C3/S2 C2/S3 C1/S4
T4
T3
T2
T1
T0
These two words are located in the Command/Indicate interrupt queue.
First word see definition above.
T0/15: binary counter value when a new primitive is occured.
IX.6 - Receive Monitor Interrupt
IX.6.1 - Receive Monitor Interrupt when TSV = 0
TSV : Time Stamping not Validated (bit of GCR Register)
bit15
bit8
NS
M18
M17
M16
M15
G0
A2
A1
A0
M14
M13
M12
M11
bit7
M8
bit 0
M7
M6
M5
ODD
A
F
L
M4
M3
M2
M1
These two words are transferred into the Monitor interrupt queue ; IQSR Register indicates the size of this
interrupt queue located in the external memory.
NS
: New Status.
Before writing the features of event in the external memory the Interrupt Controller reads the
NS bit :
if NS = 0, the Interrupt Controller stores two new bytes M1/8 and M11/18 then puts NS bit at ‘1’
when it writes the status of these two bytes which has been received.
if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).
G0
: G0 = 0, GCI 0 corresponding to DIN4 input and DOUT4 output.
G0 = 1, GCI 1 corresponding to DIN5 input and DOUT5 output.
L
: Last byte
L=1, two cases:
if ODD = 1, the following word of the Interrupt Queue contains the Last byte of message
if ODD =0, the previous word of the Interrupt Queue (concerning this channel) contains the Last
byte of message.
L = 0, the following word and the previous word does not contains the Last byte of message.
F
: First byte
F=1, the following word contains the First byte of message.
F=0, the following word does not contain the First byte of message.
A
: Abort
A=1, Received message has been aborted.
98/101
STLC5465B
IX - EXTERNAL REGISTERS (continued)
ODD
: Odd byte number
ODD = 1, one byte has been written in the following word.
ODD = 0, two bytes have been written in the following word.
In case of V* protocol ODD,A,F,L bits are respectively 1,0,1,1.
M1/8 : New Byte received twice consecutively if GCI Protocol has been validated.
Byte received once if V* Protocol has been validated.
M11/18 : Next new Byte received twice consecutively if GCI Protocol has been validated.
This byte is at ”1” in case of V* protocol.
IX.6.2 - Receive Monitor Interrupt when TSV = 1
TSV : Time Stamping Validated (bit of GCR Register)
bit15
bit8
NS
G0
A2
A1
A0
bit7
bit 0
ODD
A
F
L
M18
M17
M16
M15
M14
M13
M12
M11
M8
M7
M6
M5
M4
M3
M2
M1
T15
T14
T13
T12
T11
T10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
These four words are located in the Monitor interrupt queue ; IQSR Register indicates the size of this
interrupt queue located in the external memory.
NS
: New Status.
Before writing the features of event in the external memory the Interrupt Controller reads the
NS bit :
if NS = 0, the Interrupt Controller stores two new bytes M1/8 and M11/18 then puts NS bit at ‘1’
when it writes the status of these two bytes which has been received.
if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).
G0
: G0 = 0, GCI 0 corresponding to DIN4 input and DOUT4 output.
G0 = 1, GCI 1 corresponding to DIN5 input and DOUT5 output.
L
: Last byte
L=1, two cases:
if ODD = 1, the following word of the Interrupt Queue contains the Last byte of message
if ODD =0, the Last byte of message has been stored at the previous access of the Interrupt
Queue (concerning this channel).
L=0, the following word and the previous word does not contain the Last byte of message.
F
: First byte
F=1, the following word contains the First byte of message.
F=0, the First byte of message is not the following word.
A
: Abort
A=1, Received message has been aborted.
ODD : Odd byte number
ODD = 1, one byte has been written in the following word.
ODD = 0, two bytes have been written in the following word.
M1/8 : New Byte received twice consecutively if GCI Protocol has been validated.
Byte received once if V* Protocol has been validated.
M11/18 : Next new Byte received twice consecutively if GCI Protocol has been validated.
This byte is at ”1” in case of V* protocol.
T15/0 : Binary counter value when a new primitive is occurred.
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STLC5465B
X - PQFP160 PACKAGE MECHANICAL DATA
Dimensions
A
A1
A2
B
C
D
D1
D3
e
E
E1
E3
L
L1
K
100/101
Min.
0.25
3.17
0.22
0.13
30.95
27.90
30.95
27.90
0.65
Millimeters
Typ.
3.42
31.20
28.00
25.35
0.65
31.20
28.00
25.35
0.80
1.60
Max.
4.07
Min.
3.67
0.38
0.23
31.45
28.10
0.010
0.125
0.009
0.005
1.219
1.098
31.45
28.10
1.219
1.098
0.95
0.026
0o (Min.), 7o (Max.)
Inches
Typ.
0.135
1.228
1.102
0.998
0.026
1.228
1.102
0.998
0.0315
0.063
Max.
0.160
0.144
0.015
0.009
1.238
1.106
1.238
1.106
0.0374
STLC5465B
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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 1999 STMicroelectronics – Printed in Italy – All Rights Reserved
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