Download

Datasheet
Revision 1.6
Digital Automotive
Pixel Link Transmitter
The INAP125T12/24 is a transmitter for the new Automotive PIXel (APIX) link for display and camera based
point-to-point applications. The APIX link features an
uni-directional pixel and full-duplex sideband data transmission over one single pair of shielded twisted pair
(STP) copper cable. The upstream sideband can also be
transmitted over a separate pair of wires to serve the requirements for automotive applications. In addition this
wire may be used for power supply.
The INAP125T12 video interface supports color widths
of 10 and 12bit, the INAP125T24 widths of 10, 12, 18
and 24bit. The interface can be configured individually to
match all popular display and image sensor interfaces.
The pixel interface is able to handle a wide spread pixel
clock for lowest EMI.
The INAP125T12/24 transmitter features dedicated
high-speed outputs with adjustable drive current and
pre-emphasis to facilitate the adaptation to different link
distances and cable qualities while offering maximum
data integrity and full EMI compliance.
Packages:
• 48 pin QFN (Quad-Flat No-Leads)
• 64 pin QFN
INAP125T12
INAP125T24
Features:
•
•
•
•
•
•
•
•
•
•
•
•
Up to 1 GBit/s Downstream Link
Up to 62.5 MBit/s Upstream Link
Low EMI, Two- or Four-Wire Full Duplex Link
Accepts wide spread spectrum pixel clock
+15 m Distance with low profile STP cables
10/12/18/24 bit pixel Interface
Configurable sampling edge for pixel data
DC-balanced line coding to support AC
coupling
Line Driver Current and Pre-Emphasis
adjustable
ISO10605 and IEC61000-4-2 compliant ESD
protection
Extended Temp. Range: -40 to +105°C
AEC-Q100 qualified
Applications:
•
•
•
•
•
•
•
Automotive Infotainment Displays
Automotive Dashboard Displays
Head-Up Displays
Rear-Seat Entertainment Systems
Automotive Driver Assistance
Surveillance Systems
Inspection Systems
Figure 1: APIX system overview
November 21, 2012 Revision 1.6
DS_INAP125T
Page 1 of 34
Datasheet
1.0 Introduction
The APIX link transmits uncompressed pixel data with a sustained and resolution-independent link data rate of
either 1 GBit/s or 500 MBit/s over one single pair of STP copper cable. In addition to the pixel data, bidirectional
sideband control data can be transmitted over the same pair of wires.
The link supports distances of up to +15m (1 GBit/s mode) and up to +40m (500 MBit/s mode) depending on
the output settings (current, pre-emphasis) and the cable properties.
Optimized for low EMI, the APIX link is dedicated for point-to-point applications within vehicles. The highly integrated architecture allows the implementation of video and audio links in applications like central information
displays, dashboard and head-up displays, but also camera links as part of driver assistance systems requiring
real-time digital video streams.
1.1 Transmission Channels
The APIX link provides three independent channels for data transfer
• the high speed downstream pixel channel
• the downstream sideband channel
• the upstream sideband channel
The pixel channel and the downstream sideband channel are multiplexed and commonly transmitted over the
downstream link.
The upstream sideband channel can either be established over the same pair of wires as the downstream link
(embedded upstream channel) or alternatively over a separate pair of wires. The configuration needs to be performed by the configuration vectors (see section 3.1).
!"#"$%%&
#'
!"#"$%%&
#'
!-
()!*+,!"#"$%%&
()!*+,!"#"$%%&
()!*+,
()
()!"#"$%%&
()!"#"$%%&
Figure 1-1: Single wire transmission channel configuration
November 21, 2012 Revision 1.6
DS_INAP125T
Page 2 of 34
Datasheet
!"!#$$%
"&
!"!#$$%
"&
,-
'( )*+ !"!#$$%
'( )*+ !"!#$$%
'( )*+
'(
'( !"!#$$%
'( !"!#$$%
Figure 1-2: Two wire transmission channel configuration
1.2 Link Bandwidth
The bandwidth of the downstream link can be selected from these two modes:
• “full bandwidth” mode with a link data rate of 1 GBit/s, providing a net video data rate of 847MBit/s
• “half bandwidth” mode with a link data rate of 500 MBit/s, providing a net video data rate of 423.6MBit/s
The bandwidth also defines the maximum data rate possible for the sideband channels. The downstream sideband channel is transmitted in dedicated slots in the downstream link and therefore offers guaranteed low latency real-time characteristics. The maximum transmission rates is defined by the sampling frequency of the
input pins as defined in section 2.3.2.
The upstream sideband channel is transmitted either as common mode signal on the same or as differential
signal on a separate line (see Figure 1-2). The upstream channel data rate is configurable by configuration vectors as defined in section 3.1 and is not affected by the signalling method chosen for the upstream sideband
channel.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 3 of 34
Datasheet
2.0 Functional Description
2.1 Block Diagram
Figure 2-1: INAP125T12 Block Diagram
Figure 2-2: INAP125T24 Block Diagram
November 21, 2012 Revision 1.6
DS_INAP125T
Page 4 of 34
Datasheet
2.2 Serial Link Interfaces
2.2.1 Downstream Link Interface
The interface (SDOUT+, SDOUT-) of the downstream serial link (Tx -> Rx) is implemented with differential Current Mode Logic (CML).
2.2.2 Upstream Link Interface
As the upstream serial channel (from Rx to Tx) can alternatively be established over the downlink (embedded
back channel) or a separate pair of STP cable, different signalling techniques will be employed.
Option 1: Upstream and downstream channels share the same pair of STP cable. The upstream link employs
common mode signalling technique.
Option 2: Upstream and downstream channels are transmitted over 2 separate pairs of STP cable. The additional upstream interface of the APIX devices (SDIN+, SDIN-) is realized with differential Current Mode Logic
(CML).
2.3 Digital Interfaces
2.3.1 Pixel Data Interface
The pixel data interface is the input for the 24 bit parallel pixel data representing the video data. In addition 3
pixel control signals like HSYNC, VSYNC and DATA ENABLE can be transmitted. The interface needs to be
driven by an external pixel clock at PX_CLK, which acts as synchronous clock for the interface. The pixel clock
is limited to 62 MHz as specified in Table 7-5. Data width and the configuration for the pixel control data are
defined by configuration vectors (see section 3.1).
control signal transmit mode
configuration of transmission of pixel control signals
Channels
Downstream
PX_DATA Width
never
even pixels only
each pixel
10 bit
62.0 MHz
62.0 MHz
62.0 MHz
12 bit
62.0 MHz
62.0 MHz
56.4 MHz
18 bit
47.0 MHz
43.4 MHz
40.3 MHz
24 bit
35.3 MHz
33.2 MHz
31.3 MHz
10 bit
42.3 MHz
36.8 MHz
32.5 MHz
12 bit
35.2 MHz
31.3 MHz
28.2 MHz
18 bit
23.5 MHz
21.7 MHz
20.1 MHz
24 bit
17.6 MHz
16.6 MHz
15.6 MHz
Bandwidth mode
1GBit/s
Bandwidth mode
500MBit/s
Table 2-1: Maximum pixel clock frequency for different PX_CTRL and data width settings
The parallel pixel interface supports pixel formats of 10, 12, 18 and 24 bit + 3 control signals. Pixel data and
control signals are sampled with the pixel clock. The active edge can be configured to either rising or falling.
It is recommended to consider series resistors for all PX_DATA, PX_CTRL and PX_CLK input pins close to
the video source device to reduce the risk of data-related emissions and reflections.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 5 of 34
Datasheet
Color Depth
INAP125T12a
INAP125T24
10 Bit
PX_DATA[9:0]
PX_DATA[9:0]
12 Bit
PX_DATA[11:0]
PX_DATA[11:0]
18 Bit
-
PX_DATA[17:0]
24 Bit
-
PX_DATA[23:0]
Table 2-2: Pixel data interface options
a. 18 and 24 bit configurations also possible for INAP125T12 devices, most significant bits PX_DATA[23:12] internally pulled low.
Control Function
INAP125T12
INAP125T24
HSYNC / lineSync
PX_CTRL[0]
PX_CTRL[0]
VSYNC / frameSync
PX_CTRL[1]
PX_CTRL[1]
DATA ENABLE / valid
PX_CTRL[2]
PX_CTRL[2]
Table 2-3: Pixel control interface
Please note that PX_CTRL[2] is required by the APIX link to synchronize the serial transmission to the pixel
data. Therefore it is mandatory to toggle the pin at least once at the beginning of the transmission to ensure
the correct operation of the APIX link.
2.3.2 Sideband Channel Downstream Interface
The sideband data downstream interface provides either one (INAP125T12) or two (INAP125T24) input pins
to sample sideband data. Both pins are sampled at a specific frequency and transmitted as 2 bit data packet.
The sampling frequency depends on the bandwidth mode selected for the downstream link as shown in
Table 2-4.
Downstream speed
Sampling
frequency
1 GBit/s
13.89 MHz
500 MBit/s
6.94 MHz
Input pins
INAP125T12
INAP125T24
SBDOWN_DATA[0]
SBDOWN_DATA[1:0]
Table 2-4: Downstream Sideband channel sampling frequency
November 21, 2012 Revision 1.6
DS_INAP125T
Page 6 of 34
Datasheet
2.3.3 Sideband Channel Upstream Interface
The sideband data upstream interface provides the sideband data at either one (INAP125T12) or two
(INAP125T24) output pins. The pins are provided synchronously to SBUP_CLK, which reflects the upstream
sample clock at the INAP125R12/24 receiver devices. The maximum data rate is limited by the upstream serial
line clock, which is defined by a configuration vector (see Table 3-1). Please see Table 2-5 for a complete list
of available data rates.
Upstream Serial
Line Clock
Maximum Output data
rate (per pin)
62.5 MHz
<10.40 MBit/s
41.61 MHz
<6.94 MBit/s
31.25 MHz
<5.20 MBit/s
20.83 MHz
<3.48 MBit/s
Output pins
INAP125T12
INAP125T24
SBUP_DATA[0]
SBUP_DATA[1:0]
Table 2-5: Upstream sideband channel data rate with INAP125R12/24 receiver
2.4 Signal Description
Note: Unused CMOS inputs should be tied to GND.
For thermal and functional reasons the exposed die attach pad must be connected to GND.
Signal Name
Pin #
Type
13,1,11,
10,9,8,7,6,
5,4,3,2
IN
Pixel data input, sampled with respect to the rising
or falling edge of PX_CLK. Inputs should be connected via series resistors.
12
IN
Pixel clock input
43,44,45
IN
Pixel control signals
SBDOWN_DATA[0]
17
IN
Downstream sideband data
SBUP_DATA[0]
18
OUT
Upstream sideband data
SBUP_CLK
24
OUT
Sideband channel upstream clock
RESET#
16
IN
TX_ERROR
23
OUT
EEPROM_DATA
20
IN/OUT
Configuration data
EEPROM_CLK
19
OUT
Configuration clock
XTAL_IN
40
IN
XTAL_OUT
39
OUT
NOM_CUR
28
PASSIV
PX_DATA[11:0]
PX_CLK
PX_CTRL[2:0]
Description
Asynchronous reset (active low)
Upstream Link Sync Error Indicator (active high)
Oscillator input or reference clock input
Oscillator output
Serial Downstream: Nominal current control
Table 2-6: INAP125T12 Pinout description, 48-pin QFN
November 21, 2012 Revision 1.6
DS_INAP125T
Page 7 of 34
Datasheet
Signal Name
Pin #
Type
PRE_CUR
29
PASSIV
Serial Downstream: Pre-emphasis current control
SDOUT+
32
OUT
SDOUT-
33
OUT
SDIN+
35
IN
SDIN-
36
IN
CML serial data interface downstream. Interface
to differential transmission line with
Zdiff = 100 Ohm.
CML serial data interface upstream. Interface to
differential transmission line with Zdiff = 100 Ohm.
Leave open if not used.
VCO_TUNE
27
IN
VCO loop filter tuning voltage
PFD_OUT
26
OUT
Current output for VCO loop filter
14, 47
PWR
1.8 V core supply
DVDD
22
PWR
3.3 V I/O supply
VDD_VCO
25
PWR
Regulated power supply for VCO 1.8 V, 7 mA
VDDA
34
PWR
1.8 V analog supply
VDD_OSC
41
PWR
1.8 V oscillator supply
DVDD_OSC
37
PWR
3.3 V oscillator supply
VSSa
15, 46
GND
Digital core ground
DVSSa
21,48
GND
Digital I/O ground
GNDAa
31
GND
Analog ground
VSS_OSCa
42
GND
Oscillator ground
DVSS_OSCa
38
GND
Oscillator I/O ground
NC
30
VDD
Exposed Dia Attach Pad
-
Description
not connected
GND
Connection to GND with multiple VIAs
Table 2-6: INAP125T12 Pinout description, 48-pin QFN
a. All VSS, DVSS and GND pins should be connected as common ground
Signal Name
PX_DATA[23:0]
PX_CLK
PX_CTRL[2:0]
Pin #
Type
Description
35,32,18,17
,16,62,37,
36,61,31,60
,19,15,1,13,
12,11,10,9,
6,5,4,3,2
IN
Pixel data input, sampled with respect to the rising
or falling edge of PX_CLK. Inputs should be connected via series resistors.
14
IN
Pixel clock input
55,56,57
IN
Pixel control signals
Table 2-7: INAP125T24 Pin description, 64-pin QFN
November 21, 2012 Revision 1.6
DS_INAP125T
Page 8 of 34
Datasheet
Signal Name
Pin #
Type
SBDOWN_DATA[1:0]
34,23
IN
SBUP_DATA[1:0]
33,24
OUT
Upstream sideband data
SBUP_CLK
30
OUT
Sideband channel upstream clock
RESET#
22
IN
TX_ERROR
29
OUT
EEPROM_DATA
26
IN/OUT
Configuration data
EEPROM_CLK
25
OUT
Configuration clock
XTAL_IN
52
IN
XTAL_OUT
51
OUT
NOM_CUR
41
PASSIV
Serial Downstream: Nominal current control
PRE_CUR
42
PASSIV
Serial Downstream: Pre-emphasis current control
SDOUT+
44
OUT
SDOUT-
45
OUT
CML serial data interface downstream. Interface
to differential transmission line with
Zdiff = 100 Ohm.
SDIN+
47
IN
SDIN-
48
IN
CML serial data interface upstream. Interface to
differential transmission line with Zdiff = 100 Ohm.
VCO_TUNE
40
IN
VCO loop filter tuning voltage
PFD_OUT
39
OUT
Current output for VCO loop filter
VDD_VCO
38
PWR
Regulated power supply for VCO 1.8 V, 7 mA
7,20,59
PWR
1.8 V core supply
DVDD
28,64
PWR
3.3 V I/O supply
VDDA
46
PWR
1.8 V analog supply
VDD_OSC
53
PWR
1.8 V oscillator supply
DVDD_OSC
49
PWR
3.3 V oscillator supply
8,21,58
GND
Digital core ground
DVSSa
27,63
GND
Digital I/O ground
GNDAa
43
GND
Analog ground
VSS_OSCa
54
GND
Oscillator ground
DVSS_OSCa
50
GND
Oscillator I/O ground
-
GND
Connection to GND with multiple VIAs
VDD
VSSa
Exposed Dia Attach Pad
Description
Downstream sideband data
Asynchronous reset (active low)
Upstream Link Sync Error Indicator (active high)
Oscillator input or reference clock input
Oscillator output
Table 2-7: INAP125T24 Pin description, 64-pin QFN
a. All VSS, DVSS and GND pins should be connected as common ground
November 21, 2012 Revision 1.6
DS_INAP125T
Page 9 of 34
Datasheet
3.0 Configuration, Reset, Power-Up and Error Detection
3.1 Configuration
The device parameters and settings are configured through a two-wire serial interface which is compatible to
the MicroChip MicroWire™ interface. After power-up or reset, the INAP125T12/24 expects a serial EEPROM
at the interface EEPROM_DATA and EEPROM_CLK, to read in the configuration vectors. In case no EEPROM
is used, the chip needs to be stimulated with the PROM_start and PROM_stop bytes as shown in Table 3-1. If
the initialization fails the default values will be used. Please see section 3.1.2 for more details on the programming flow.
3.1.1 Configuration vectors
Address
byte
Bit#
Parameter
00
7:0
PROM_start
2:0
pre-emphasis
control
01
02
3
dedicated
upstream
4
embedded
upstream
5
reserved
6
bandwidth
mode
7
wait period
after
configuration
1:0
pixel data
widtha
Recommended
value
Default
value
10111101
000
1
1
Comment
PROM valid byte 0
000
regulates the delay until pre-emphasis gets active. 000 means
pre-emphasis active with first bit.
(recommended)
0
0: enable dedicated upstream link
1: disable
Note: in case bit 3 and 4 are set to '0',
the upstream channel is disabled
1
0: enable embedded upstream link
1: disable
Note: in case bit 3 and 4 are set to '0',
the upstream channel is disabled
1
reserved
0
0: 500 MBit/s mode
1: 1 GBit/s mode
1
0: no delay
1: 50 ms delay after configuration to
stabilize the PLL
00
selects the width of pixel data to be
transmitted
00: 10 bit
01: 12 bit
10: 18 bit
11: 24 bit
Table 3-1: Configuration vectors
November 21, 2012 Revision 1.6
DS_INAP125T
Page 10 of 34
Datasheet
Address
byte
Bit#
Comment
transmission of pixel control signals
00: never
01: unused
10: on every second (even) pixels
11: on each pixel
11
4
reserved
1
1
5
pixel clock
active edge
1
0: falling edge
1: rising edge
7:6
upstream
serial link
clock
10
See Table 3-2 and Table 3-3
3:0
upstream link
data recovery
7:5
05
Default
value
11
4
04
Recommended
value
control signal
transmit mode
3:2
03
Parameter
reserved
0001
0
See Table 3-4
0
TX_Error config
000
0
pll status
0
0
4:1
reserved
1000
1000
7:5
reserved
100
100
7:0
PROM_end
10011001
Configuration of TX_Error pin
See Table 3-5
loss of PLL synchronization resets
device
0: enable
1: disable
PROM valid byte 1
Table 3-1: Configuration vectors
a. 18 and 24 bit configurations also possible for INAP125T12 devices, most significant bits PX_DATA[23:12] internally pulled low.
Bandwidth mode
Configuration
Byte 2, Bit 7:6
Upstream serial line clock
1 Gbit/s
00
62.5 MHz
1 Gbit/s
01
41.67 MHz
1 Gbit/s
10
31.25 MHz
Table 3-2: Sideband upstream configuration for full bandwidth mode
November 21, 2012 Revision 1.6
DS_INAP125T
Page 11 of 34
Datasheet
Bandwidth mode
Configuration
Byte 2, Bit 7:6
Upstream serial line clock
500 MBit/s
00
62.5 MHz
500 MBit/s
10
31.25 MHz
500 MBit/s
11
20.83 MHz
Table 3-3: Sideband upstream configuration for half bandwidth mode
Upstream serial line clock
Configuration
Byte 3, Bit 3:0
62.5 MHz
0011
41.67 MHz
0001
31.25 MHz
0001
20.83 MHz
0011
Table 3-4: Upstream link data recovery configuration
Status
Configuration
Byte 3, Bit 7:5
Comment
SBUP_Error
000
Loss of upstream synchronization
SBUP_Restart
001
Upstream synchronization restarted
(reserved)
010:111
Table 3-5: TX Error pin configuration
November 21, 2012 Revision 1.6
DS_INAP125T
Page 12 of 34
Datasheet
3.1.2 Configuration procedure
The configuration of the INAP125T12/24 is performed through the MicroWireTM compatible interface. In general, the configuration may be performed by connecting a standard EEPROM or by serving the data from a
micro controller or FPGA. The INAP125T12/24 expects the configuration vector data in 8-bit data format. In
case of invalid PROM_start or PROM_end bytes, the devices uses the default values.
Please see Figure 3-1 for the general communication flow.
RESET# released
INAP125T12/24 sends
- start bit (‘1‘)
- opcode (‘10‘) (read)
- start address (‘00000000‘)
INAP125T12/24 receives
- PROM_start (‘0xBD‘)
- 4 bytes configuration data
- PROM_end (‘0x99‘)
Figure 3-1: Configuration Flow
Figure 3-2: Configuration Interface Timing
Recommended EEPROMs are the 93L46A or 93L46C from Microchip Technology Inc. with selected word size
of 8 bit. Since the INAP125T12/24 does not provide a dedicated CS signal, the EEPROM needs to support to
send all data on just one rising edge of CS as shown in Figure 3-2. Please see Figure 3-3 for a typical connection circuitry for the EEPROM.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 13 of 34
Datasheet
Figure 3-3: EEPROM connection circuitry
In order to connect the INAP125T12/24 configuration interface to the host controller, the host needs to be able
to accept the interface clock from the APIX device.
Please note: The INAP125T12/24 is only able to respond to the PROM_Start and PROM_End command. No
other Microwire commands supported.
$
$/010&0)
2
Figure 3-4: Host Connection diagram
3.2 Reset
The Reset pin triggers an asynchronous reset (active low) which sets all digital blocks of the INAP125T12/24
into a defined state. The configuration vectors are reset to the default values. The minimum low pulse width of
the reset signal is 4 reference clock cycles.
During reset the serial output pins SDOUT-, SDOUT+ are held on VDDA level. All parallel outputs pins are at
low level. EEPROM_DATA is set to Hi-Z.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 14 of 34
Datasheet
3.3 Power-Up
3.3.1 Power-Up Sequence and Timing
The INAP125T12/24 tolerates the supply voltages to be ramped simultaneously. To avoid high IO currents,
1.8V supply voltages should ramp before 3.3V on power-up. On power-down, 3.3V should be powered down
before 1.8V. On power-up all supply voltages have to rise steadily from GND level up to the VCCMIN level without turn to negative direction. The ramping times must be within the limits as specified in Table 3-6. All 1.8V
supplies have to be ramped up simultaneously starting from GND according figure 3.5. Reset has to be held
low until all supplies reached recommended operating conditions.
Figure 3-5: Steady voltage ramp-up
Parameter
tRAMP
Description
Min.
Typ.
Max.
Unit
Supply Ramp Up Time for all supplies GND to VCCmin
0.05
1
10
ms
Table 3-6: Power supply ramp-up time
3.3.2 Power Supply Filtering
To achieve best transmission performance a noise level of less than 50mV on all analog and digital supply voltages VDD, VDDA, VDD_OSC and DVDD is recommended. The loop filter supply VDD_VCO requires lowest
possible noise for best performance. See also section 6.0 for recommendations on power supply filtering.
3.4 Error detection
The INAP125T12/24 device includes an automatic error detection, which, with upstream channel enabled, indicates an upstream link synchronization error on pin TX_ERROR. The TX_ERROR output can be configured
to different options using configuration vectors as described in section 3.1.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 15 of 34
Datasheet
4.0 Electrical Specification
4.1 Interface Timing
4.1.1 Pixel Interface
Figure 4-1: Pixel Interface timing at rising edge
Parameter
Description
Min.
Typ.
Max.
Unit
tSETUP
Pixel data and control signal setup time to pixel clock
1.5
2
-
ns
tHOLD
Pixel data and control signal hold time to pixel clock
1
-
-
ns
Min.
Typ.
Max.
Unit
Table 4-1: Pixel interface timing at rising edge
Figure 4-2: Pixel interface timing at falling edge
Parameter
Description
tSETUP
Pixel data and control signal setup time to pixel clock
1.5
2
-
ns
tHOLD
Pixel data and control signal hold time to pixel clock
1
-
-
ns
Table 4-2: Pixel interface timing at falling edge
November 21, 2012 Revision 1.6
DS_INAP125T
Page 16 of 34
Datasheet
4.1.2 Sideband Interface Timing
The upstream interface clock SBUP_CLK provides the internal sampling clock used at the APIX receiver to
sample the data at SBUP_DATA[1:0]. In general the clock is defined as 1/3 of the upstream serial line clock as
defined in Table 2-5. Due to the framing structure of the upstream link, the sideband clock is not available every
16th clock cycle as shown in Figure 4-3.
Figure 4-3: Upstream sideband interface
Figure 4-4: Upstream sideband Interface Timing
Parameter
Description
Min.
Typ.
Max.
Unit
tSETUP
Sideband data setup time to sideband clock
-
60
-
ns
tHOLD
Sideband data hold time to sideband clock
-
60
-
ns
Table 4-3: Upstream sideband Interface Timing at 20.83MHz upstream serial line clock
Parameter
Description
Min.
Typ.
Max.
Unit
tSETUP
Sideband data setup time to sideband clock
-
40
-
ns
tHOLD
Sideband data hold time to sideband clock
-
40
-
ns
Table 4-4: Upstream Interface Timing at 31.25MHz upstream serial line clock
Parameter
Description
Min.
Typ.
Max.
Unit
tSETUP
Sideband data setup time to sideband clock
-
30
-
ns
tHOLD
Sideband data hold time to sideband clock
-
30
-
ns
Table 4-5: Upstream Interface Timing at 41.67MHz upstream serial line clock
November 21, 2012 Revision 1.6
DS_INAP125T
Page 17 of 34
Datasheet
Parameter
Description
Min.
Typ.
Max.
Unit
tSETUP
Sideband data setup time to sideband clock
-
20
-
ns
tHOLD
Sideband data hold time to sideband clock
-
20
-
ns
Table 4-6: Upstream Interface Timing at 62.5 MHz upstream serial line clock
4.1.3 Configuration interface timing
"'
!! "
#$%&
"
#$
%&
Figure 4-5: Configuration interface timing
Parameter
Description
Min.
Typ.
Max.
Unit
6xtOSCa
650
-
ns
t1
RESET high to first EEPROM clk
t2
setup time EEPROM_DATA to EEPROM_CLK
-
400
-
ns
t3
hold time EEPROM_DATA to EEPROM_CLK
-
1200
-
ns
t4
EEPROM_CLK low time
-
800
-
ns
t5
EEPROM_CLK high time
-
800
-
ns
t6
setup time EEPROM_DATA to EEPROM_CLK
-
20
-
ns
t7
hold time EEPROM_DATA to EEPROM_CLK
-
10
-
ns
Table 4-7: Configuration interface timing
a. tOSC reflects one clock cycle as defined by the external reference clock, see section 5.2.4.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 18 of 34
Datasheet
5.0 External circuits
5.1 External Termination Resistors
There are no external termination resistors required – for both Upstream and Downstream the dedicated 50
Ohm termination resistors are integrated in the circuit.
5.2 External Coupling Capacitors
5.2.1 Downstream Coupling Capacitors
! " #
$"%$
Figure 5-1: External coupling capacitors in downstream
5.2.2 Upstream Coupling Capacitors
! " #
$"%$
Figure 5-2: External coupling capacitors in upstream
November 21, 2012 Revision 1.6
DS_INAP125T
Page 19 of 34
Datasheet
5.2.3 External Loop Filter
The INAP125T12/24 PLL circuit for the core system requires an external loop filter which should be implemented as shown in Figure 5-3.
-$./+012
+*+'
'
'
*
+'*,
Figure 5-3: External loop filter circuit for the system clock VCO
Symbol
Description
Value Setting
A
Value Setting
B
Unit
C1
Capacitor C1
1.5
3.3
nF
C2
Capacitor C2
10
68
nF
R1
Resistor R1
220
6.5
k
Table 5-1: Loop filter values for the system clock VCO
The external loop filter components allow to change the PLL characteristics within narrow limits. While value
setting A (nominal) provides a high PLL bandwidth of 4.5kHz, value setting B sligthly decreases this bandwidth
but increases immunity against undesired voltage drops / spikes.
5.2.4 External Reference Clock
The INAP125T12/24 core clock frequency is generated by an internal PLL controlled by an external 10 MHz
crystal. Figure 5-4 shows a typical crystal design required for the oscillator circuit. The values for C1, C2 and
R1 need to be selected to match the oscillation requirements of the crystal Q1. Please see Table 5-2 for the
external crystal.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 20 of 34
Datasheet
'
&
)*
)*
'
(
Figure 5-4: Crystal clock schematic example
Parameter
Symbol
Min
Typ
Max
Unit
Nominal Frequency
fOSC
-
10
-
MHz
Frequency Tolerance
Ftol
-100
-
+100
ppm
ESR
-
-
80
Ohm
Equivalent Series Resistance
Drive Level
see Table 5-3
Table 5-2: Crystal requirements
For resonance at the correct frequency, the crystal needs to be loaded with its specified load capacitance CL,
which is the value of capacitance used in conjunction with the oscillation unit. The INAP125T12/24 oscillator
provides some of the load with internal capacitance which is specified within the range of 10pF to 12.5pF. The
remainder is generated by the external capacitors and tuning capacitors labeled C1 and C2.
The load capacitance CL can be calculated from CL = Cint + C1//C2. E.g. selecting C1 and C2 with 15pF, CL
can be calculated to CL = 12.5pF + 7.5pF = 20pF.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 21 of 34
Datasheet
The crystal needs to be able to withstand the power dissipation, produced by the INAP125T12/24. The power
dissipation depends on the ESR of the crystal and is reflected by the maximum drive level of the crystal.
Table 5-3 illustrates the power dissipation of the INAP125T12/24 and therefore the minimum drive level capabilities of the crystal at different crystal ESR levels.
Crystal ESR
INAP125T12/24 Power dissipation /
Minimum crystal drive level
Unit
30
77
μW
50
121
μW
80
179
μW
Table 5-3: Minimum Drive level vs. Crystal ESR
Alternatively a stable 10 MHz clock signal (3.3V CMOS TTL) can be directly connected to XTAL_IN with
XTAL_OUT left open. Clock oscillator signal must start after ramping of all supply voltages is completed.
5.2.5 Pre-Emphasis and Nominal Current
For optimized signal integrity and lowest EMI in dependence of the quality and length of the STP cable used,
the output nominal current and the pre-emphasis current of the INAP125T12/24 can be set individually by
means of external resistors.
Figure 5-5: Pre-emphasis and Nominal current
Symbol
Pin
Description
Min.
Max.
Unit
Rpre_cur
PRE_CUR
resistor value
(typical current of pre-emphasis)
500
(1mA)
10000
(0.05mA)
Ohm
Rnom_cur
NOM_CUR
resistor value
(typical add-on output current)
500
(5mA)
10000
(0.5mA)
Ohm
Table 5-4: Recommended component values for nominal and pre-emphasis
November 21, 2012 Revision 1.6
DS_INAP125T
Page 22 of 34
Datasheet
6.0 Application Example
)*%
)*%
2)2% 2)2%
,,
)*%
2
-.
-.
%&'( %
(
%(
2)2%
'
)*%
%&'( %
(
,,
,,
2)2%
%
%
1
%
,
,
!" ##$"
/0
&&
&2&'
&&3
;
85"
>"$
85"
1
1
1
.
3
," !$8! "85!
)*%
1
2(
% + %
%
%
"8$;>$68$
#$9$8=$8-8"?9!#"$45"$;$!97 "8 ;> $!A#5$9
1#!$"6$9<;59!:$6$9<$6! $#;!$ 98##! =<=6?;885""$!9
B!=%;$$!<9>$878! "$45"$;$!9
#$9$8=$8-# >7#!$""$45"$;$!97 "8 ;> $!A#5$9
(1#!$" !"$45"$67 "758! #"$9 9&:5!;<=!:$8 96$"$67 ",>$"7 ";8$
(1#!$" !"$45"$67 "758! #"$9 9&:5!9!" <#?"$8 ;;$6$67 ",>$"7 ";8$
2(1#!$""$8 ;;$6$67 ">$"7 ";8$"$9 9
'(1#!$""$8 ;;$6$6 ##>5!>9&7>>#8:#$
(,>" !$8! 6$9<;>#$;$!! $@;>#$&>#$9$8=$8-A#:#$8"85!"?
Figure 6-1: Application example
November 21, 2012 Revision 1.6
DS_INAP125T
Page 23 of 34
Datasheet
7.0 Electrical Characteristics
7.1 Absolute Maximum ratings
The absolute maximum ratings define values beyond which damage to the device may occur. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. The functional operation
of the device at these or any other conditions beyond the recommended operating ratings is not guaranteed.
Parameter
DC Supply Voltage
Input Voltage
I/O Current (DC or transient any
pin)
Storage Temperature
Max Soldering Temperature
Symbol
Min.
Max.
Units
VDVDD,
VDVDD_OSC
-0.5
5.0
V
VVDD, VVDDA,
VVDD_OSC
-0.5
3.0
V
ID
-20
+20
mA
Tstg
-55
+150
°C
260
°C
40 seconds maximum
TSLD / TSLD
Note
ESD Protection IEC61000-4-2
Contact discharge a
SDOUT+,SDOUT-,SDIN+,SDIN-
-8
+8
kV
RD=330Ω, CS=150pF
ESD Protection IEC61000-4-2
Air discharge a
SDOUT+,SDOUT-,SDIN+,SDIN-
-12
+12
kV
RD=330Ω, CS=150pF
ESD Protection ISO10605
Contact discharge a
SDOUT+,SDOUT-,SDIN+,SDIN-
-8
+8
kV
RD=2kΩ, CS=150pF
ESD Protection ISO10605
Air discharge a
SDOUT+,SDOUT-,SDIN+,SDIN-
-20
+20
kV
RD=2kΩ, CS=150pF
ESD Protection HBM
JEDEC JESD22/A114
-3
+3
kV
RD=1.5kΩ, CS=100pF
ESD Protection CDM
EIA/JEDEC JESD22/C101
-1
+1
kV
Table 7-1: Absolute maximum ratings
a. ESD Protection values measured without external protection circuitry. Higher protection grades possible with
external circuitry as described in section 6.0.
November 21, 2012 Revision 1.6
DS_INAP125T
Page 24 of 34
Datasheet
7.2 Recommended operating conditions
Parameter
Symbol
Min.
Typ.
Max.
Units
Digital Core supply
VVDD
1.71
1.8
1.89
V
Analog supply
VVDDA
1.71
1.8
1.89
V
Oscillator supply
VVDD_OSC
1.71
1.8
1.89
V
Digital IO Supply
VDVDD
2.97
3.3
3.63
V
Oscillator supply
VDVDD_OSC
2.97
3.3
3.63
V
ICML
0.8
-
24
mA
Ta
-40
-
+105
°C
CML Current
Ambient Temperature
Note
Internal Current
Source
Figure 7-1: Recommended operating conditions
7.3 DC Characteristics
under recommended operating conditions. Unused inputs should be tied to ground.
Parameter
Symbol
Test Condition
Min.
Typ.
Max.
Unit
CMOS Input High Voltage
VIH
VDVDD = 3.3 V
2.0
-
VDVDD
V
CMOS Input Low Voltage
VIL
VDVDD = 3.3 V
0
-
0.8
V
CMOS Input High Current
IIH
VIN = VDVDD
-10
-
10
μA
CMOS Input Low Current
IIL
VIN = 0 V
-15
-
-77
μA
CMOS Output High Voltage
VOH
IOH = -4 mA
2.4
-
-
V
CMOS Output Low Voltage
VOL
IOL = 4 mA
-
-
0.4
V
CMOS Output High Current
IOH
VOH = 0.9 x DVDD
-
-
4
mA
CMOS Output Low Current
IOL
VOL = 0.1 x DVDD
-
-
-4
mA
Pmax_Tx
max data transmission rate
-
170
-
mW
Power Dissipation Tx
Table 7-2: DC characteristics
November 21, 2012 Revision 1.6
DS_INAP125T
Page 25 of 34
Datasheet
7.3.1 Supply Current
Parameter
min.
typ.
max.
Units
I vdd/vdd_osc
-
11
14
mA
I vdda/vdd_vco a
-
82
95
mA
I dvdd/dvdd_osc
-
7
8
mA
Table 7-3: Supply Current
a. values at maximum serial drive current NOM_CUR, configurable as described in section 5.2.5
7.4 AC-Characteristics
Parameter
Min.
Typ.
Max.
Units
-
3
5
pF
Serial Transmission Gross Data Rate (Downstream)
500
-
1000
MBit/s
Serial Transmission Gross Data Rate (Upstream)
20.8
-
62.5
MBit/s
-
5
10
ns
Input Capacitance, any pin
CMOS Output Rise / Fall Time (CL = 10 pF)
Table 7-4: AC-Characteristics
7.5 Pixel Clock Range
Parameter
Pixel Clock Frequency
Symbol
Min.
Typ.
Max.
Unit
Note
fPIX
6
-
62
MHz
Maximum frequency depends
on selected bit width
Table 7-5: Pixel Clock Range
November 21, 2012 Revision 1.6
DS_INAP125T
Page 26 of 34
Datasheet
8.0 Package Options / Ordering information
Device / Ordering
Code
Minimum Order
Quantity
Description
Package
INAP125T12
Tx w/10...12 bit Interface + 1 bit Sideband
QFN48
416 pcs/tray
INAP125T12-R2
Tx w/10...12 bit Interface + 1 bit Sideband
QFN48
2000 pcs/reel
INAP125T12-R4
Tx w/10...12 bit Interface + 1 bit Sideband
QFN48
4000 pcs/reel
INAP125T24
Tx w/10...24 bit Interface + 2 bit Sideband
QFN64
260 pcs/tray
INAP125T24-R2
Tx w/10...24 bit Interface + 2 bit Sideband
QFN64
2000 pcs/reel
INAP125T24-R4
Tx w/10...24 bit Interface + 2 bit Sideband
QFN64
4000 pcs/reel
Table 8-1: Package Options
8.1 RoHS compliance
The devices INAP125T12 and INAP125T24 are released as RoHS compliant.
9.0 Soldering information
Figure 9-1: Reflow profile
November 21, 2012 Revision 1.6
DS_INAP125T
Page 27 of 34
Datasheet
10.0 Package information
10.1 Pinout diagrams
Figure 10-1: INAP125T12 pinout diagram
Figure 10-2: INAP125T24 pinout diagram
November 21, 2012 Revision 1.6
DS_INAP125T
Page 28 of 34
Datasheet
10.2 Package dimensions
all values in millimeter
10.2.1 48-pin QFN
Figure 10-3: 48-pin QFN package dimensions
November 21, 2012 Revision 1.6
DS_INAP125T
Page 29 of 34
Datasheet
Figure 10-4: 48-pin QFN package dimensions
November 21, 2012 Revision 1.6
DS_INAP125T
Page 30 of 34
Datasheet
10.2.2 64-pin QFN
Figure 10-5: 64-pin QFN package dimensions
November 21, 2012 Revision 1.6
DS_INAP125T
Page 31 of 34
Datasheet
Figure 10-6: 64-pin QFN package dimensions
November 21, 2012 Revision 1.6
DS_INAP125T
Page 32 of 34
Datasheet
11.0 Revision History
Revision
Date
1.0
February 2008
1.1
December 2008
Changes
Released Datasheet
•
•
•
•
•
•
•
•
•
•
•
•
•
1.2
February 2009
1.3
June 2009
1.4
December 2011
1.5
August 2012
1.6
November 2012
Separated Transmitter and Receiver Datasheet
Various updates on general description and formatting
Added separate block diagrams for T12 and T24
Updated Section "Pixel Data Interface" at page 5
Updated Section "Sideband Channel Downstream Interface" at
page 6
Updated Table 2-6, “INAP125T12 Pinout description, 48-pin
QFN,” on page 7
Updated Table 2-7, “INAP125T24 Pin description, 64-pin QFN,”
on page 8
Updated Section "Configuration vectors" at page 10
Added Table 3-5, “TX Error pin configuration,” on page 12
Updated Section "External Reference Clock" at page 20
Added Section "Application Example" at page 23
Updated Section "Electrical Characteristics" at page 24
Added Section "Soldering information" at page 27
• Updated VESDCDM to 1000V in Table 7-1, “Absolute maximum
ratings,” on page 24
• Added ESD protection values for ISO10605 and IEC61000-4-2
in Table 7-1, “Absolute maximum ratings,” on page 24
• Updated Section "Application Example" at page 23
• Updated Section "Soldering information" at page 27
•
•
•
•
Updated Section "Reset" at page 14
Updated Section "Power-Up Sequence and Timing" at page 15
Updated Section "External Loop Filter" at page 20
Updated Section "External Reference Clock" at page 20
• Updated Section "64-pin QFN" at page 31
Table 11-1: Revision History
November 21, 2012 Revision 1.6
DS_INAP125T
Page 33 of 34
Datasheet
Inova Semiconductors GmbH
Grafinger Str. 26
D-81671 Munich / Germany
Phone: +49 (0)89 / 45 74 75 - 60
Fax:
+49 (0)89 / 45 74 75 - 88
Email: [email protected]
URL: http://www.inova-semiconductors.com
is a registered trademark of Inova Semiconductors GmbH
All other trademarks or registered trademarks are the property of their respective holders.
Inova Semiconductors GmbH does not assume any liability arising out of the applications or use of the product described herein; nor does
it convey any license under its patents, copyright rights or any rights of others.
Inova Semiconductors products are not designed, intended or authorized for use as components in systems to support or sustain life, or
for any other application in which the failure of the product could create a situation where personal injury or death may occur. The information contained in this document is believed to be current and accurate as of the publication date. Inova Semiconductors GmbH reserves
the right to make changes at any time in order to improve reliability, function or performance to supply the best product possible.
Inova Semiconductors GmbH assumes no obligation to correct any errors contained herein or to advise any user of this text of any correction if such be made.
© Inova Semiconductors 2012
November 21, 2012 Revision 1.6
Page 34 of 34
Similar pages