C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM DESCRIPTION MSTM-S4E PIN ASSIGNMENT The Connor-Winfield Stratum 4E Simplified Control Timing Module acts as a complete system clock module for general Stratum 4E timing applications. The MSTM is designed for external control functions. Full external control input allows for selection and monitoring of any of four possible operating states: 1) Holdover, 2) External Reference #1, 3) External Reference #2, and 4) Free Run. TABLE 1.0 illustrates the control signal inputs and the corresponding operational states: In the absence of External Control Inputs (A,B), the MSTM enters the Free Run mode and signals an External Alarm. The MSTM will enter other operating modes upon application of a proper control signal. Mode 1 operation (A=1, B=0) results in an output signal that is phase locked to the External Reference Input #1. Mode 2 operation (A=0, B=1) results in an output signal that is phase locked to External Reference Input #2. Holdover mode operation (A=1, B=1) results in an output signal at or near the frequency as determined by the latest (last) locked-signal input values and the holdover performance of the MSTM. +5Vdc HOLDOVER EX_REF 1 REF_1 GND EX_REF 2 REF_2 FREERUN GND GND CLK_OUT ALARM_OUT GND CNTL_A SYNC_OUT CNTL_B GND PLL_TVL BOTTOM VIEW BLOCK DIAGRAM 0 CNTL_A Alarm signals are generated at the Alarm Output during Holdover and Free Run operation. Alarm Signals are also generated by Loss-of-Lock, Loss-of-Reference, and by a TuneLimit indication from the PLL. A Tune-Limit alarm signal indicates that the VCXO tuning voltage is approaching within 10% the limits of its lock capability and that the External Reference Input may be erroneous. A high level indicates an alarm condition. Realtime indication of the operational mode is available at unique operating mode outputs on pins 1-4. CNTL_B 2:4 EX_REF_ 1 EX_REF_2 2:1 MUX FREERUN 1 REF 1 2 REF 2 3 PLL_ TVL FREERUN HOLDOVER HOLDOVER ALARM OUT LOCK AND DETECTION PHASE COMPARATOR 2:1 MUX Control loop filters effectively attenuate any reference jitter and smooth out phase transients. DAC FILTERS DAC STRATUM 4 VCXO TUNING VOLTAGE MONITOR FIFO STRATUM 4 TCXO SYNC_OUT CLK_OUT PLL_TVL MSTM-S4E TABLE 1.0 C ON TR OL IN PU T A B 0 0 1 0 0 1 1 1 OPER ATION AL MOD E External Reference #1 External Reference #2 R E F _1 R E F _2 H OL D OVER FR E E R U N P L L _T V L AL AR M OU TPU T Free Run (D efault) 0 0 0 1 0 1 Normal Tune Li mi t LOR + LOL Normal Tune Li mi t LOR + LOL 1 1 1 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 1 0 1 1 Holdover 0 0 1 0 0 1 INT DATA SHEET #: ____________ TM015 Specifications subject to change without notice. PAGE 1 OF 5 REV:________ 01 DATE:____________ 7/3/00 © Copyright 2000 Connor-Winfield all rights reserved. C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM TABLE 2.0 SYMB OL ABSOLUTE MAXIMUM RATING PAR AMETER MIN IMU M N OMIN AL MAXIMU M U N ITS N OTES V cc Power supply voltage (Vcc to GND ) -0.5 +7.0 Volts 1.0 VIN Input voltage wi th respect to ground -0.5 Vcc+0.5 Volts 1.0 TSTG Storage temperature -65.0 +150.0 deg. C 1.0 NOTE 1.0: TABLE 3.0 Operation of the device at these or any other conditions beyond those listed under Rocommended Operating Conditions is not implied. Exposure to Absolute Maximum Ratings conditions for extended periods of time may affect device reliability. INPUT AND OUTPUT CHARACTERISTICS SYMB OL PAR AMETER MIN IMU M VIH Hi gh level i nput voltage (TTL C ompati ble) VIL Low level i nput voltage (TTL C ompati ble) TIN Input si gnal transi ti on ti me N OMIN AL MAXIMU M U N ITS 2.0 V cc V 0 0.8 V 250 nS 15 pF Input capaci tance C IN TRIN Hi gh level output voltage @ IOH= -8.0 mA, Vcc mi ni mum Low level output voltage @ IOL= 8.0 mA, Vcc maxi mum C lock out transi ti on ti me hi gh-to-low, no load C lock out transi ti on ti me low-to-hi gh, no load Input 8 KHz reference si gnal posi ti ve pulse wi dth Input 8 KHz reference si gnal negati ve pulse wi dth TOP1 Standard Operati ng Temperature VOH VOL THL TLH TRIP 3.86 V 0.4 V 4.0 nS 4.0 nS 30 nS 30 nS 0 TABLE 4.0 N OTES 70 deg. C SPECIFICATIONS PAR AMETER N OTES Frequency Range 16.384 MHz , 19.44 MHz Supply C urrent 5.0 60 mA Typi cal at 16.384 MHz Ti mi ng Reference Inputs 8 KHz Ji tter and Phase Tolerance 6.0 Ref-GR-1244-C ORE 4.2-4.4 Wander Generati on Ref-GR-1244-C ORE 5.3 Free-Run Accuracy 32 ppm Holdover Stabi li ty < 32 ppm Ini ti al Offset 0.1 ppm Temperature 25 ppm D ri ft 0.1 ppm Holdover Hi story 30 seconds Pull-i n / Hold-i n Range ±32 ppm Mi ni mum , ±100ppm Maxi mum Lock Ti me 3.0 < 1 0 0 se cs C orrecti on Peri od 125 uS TVL Alarm 1= WARNING: Reference neari ng operati onal li mi t INT DATA SHEET #: ____________ TM015 2.0 7.0 Specifications subject to change without notice. PAGE 2 OF 5 REV:________ 01 DATE:____________ 7/3/00 © Copyright 2000 Connor-Winfield all rights reserved. C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) PIN DESCRIPTION MSTM-S4E PIN # 1 HOLDOVER -Output. High when the control inputs select Holdover. 2 REF _1 -Ouput. High when the control inputs select EX REF_1. 3 REF_2 -Output. High when the control inputs select EX REF_2. 4 FREERUN -Output. High when the control input selects Free Run. 5 GND -Ground. 6 ALARM_OUT -Ouput. =1,If (FREERUN + HOLDOVER + LOS + LOL + PLL_TVL) . 7 CNTL_A -Mode control input. 8 CNTL_B -Mode control input. 9 PLL_TVL -Tuning Voltage Alarm. =1 If CAPTURE RANGE NEAR 10% OF EXTREME 10 GND -Ground. 11 SYNC_OUT -Syncronized output. 12 GND -Ground. 13 CLK_OUT -Stratum 4 TCXO output. (Non-synchronized). 14 GND -Ground. 15 EX_REF_2 -External Reference #2 Input. (8 KHz) 16 GND -Ground. 17 EX_REF_1 -Input. External Reference #1 Input. (8 KHz) 18 +5 Vdc +5 Volt DC supply. NOTES FOR TABLES 1-3 NOTES: 2.0 Holdover stability is the cumulative fractional frequency offset containing Initial Offset, Temperature, and Drift components as described by Bellcore GR-1244-CORE 5.2. 3.0 Pull-in range is the minimum frequency deviation on the reference inputs to the timing module that can be overcome to pull itself into synchronization with the reference. 4.0 After 100 seconds at stable room temperature. 5.0 Consult factory for other output frequencies. 6.0 Ref- GR1244-CORE 3.2.1 R3-1. 7.0 A 1 level indicates unit is within the extreme 10% of its operating range tracking the reference INT DATA SHEET #: ____________ TM015 Specifications subject to change without notice. PAGE 3 OF 5 REV:________ 01 DATE:____________ 7/3/00 © Copyright 2000 Connor-Winfield all rights reserved. C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) APPLICATIONS CIRCUIT DIAGRAM MSTM-S4E PACKAGE WITH COVER MSTM-S4E BLOCK DIAGRAM 5 VOLT DC POWER SUPPLY NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK,etc. FREE RUN CLOCK COPY +5Vdc HOLDLAST EX_REF_1 REF_1 GND EX_REF_2 GND CLK_OUT GND SYSTEM CLOCK SYNC_OUT GND SYSTEM CONTROL AND DATA INPUTS REF_2 FREERUN GND ALARM_OUT CNTL_A CNTL_B PLL_TVL LOSS-OFREFERENCE MONITOR SECTION MECHANICAL CHARACTERISTICS MECHANICAL SHOCK 883D 2002 CONDITION B 1500 Gs 0.5 ms. VIBRATION 883D-2007 C0NDITION A 0.06 DA or 20 g Peak Acceleration 20 to 2000 Hz. ENVIRONMENTAL CHARACTERISTICS BOTTOM VIEW TEMPERATURE CYCLE 883D METHOD 1010.7 CONDITION B 10 Cycles -55 to +125 Degrees C. HTOB - HIGH TEMPERATURE OPERATING BIAS 1000 Hours +125 Degrees C. FACTORY RELIABILITY AUDIT TEMPERATURE CYCLE 500 Cycles -55 to +125 Degrees C. HTOB - HIGH TEMPERATURE OPERATING BIAS 1000 Hours +125 Degrees C. INT DATA SHEET #: ____________ TM015 Specifications subject to change without notice. PAGE 4 OF 5 REV:________ 01 DATE:____________ 7/3/00 © Copyright 2000 Connor-Winfield all rights reserved. C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) Revision History: 7/5/00 -Made general corrections INT DATA SHEET #: ____________ TM015 Specifications subject to change without notice. PAGE 5 OF 5 REV:________ 01 DATE:____________ 7/3/00 © Copyright 2000 Connor-Winfield all rights reserved.