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General Description

The MAX96705 is a compact serializer with features

especially suited for automotive camera applications. It is

function and pin compatible with the MAX9271. In high-

bandwidth mode, the parallel-clock maximum is 116MHz

for 12-bit linear or combined HDR data types.

The embedded control channel operates at 9.6kbps to

1Mbps in UART, I

C, and mixed UART/I

C modes, allow-

ing programming of serializer, deserializer, and camera

registers independent of video timing.

For driving longer cables, the IC has programmable

pre/deemphasis. Programmable spread spectrum is

available on the serial output. The serial output meets

ISO 10605 and IEC 61000-4-2 ESD standards. The core

supply range is 1.7V to 1.9V, and the I/O supply range is

1.7V to 3.6V.

The MAX96705 is available in a 32-pin (5mm x 5mm)

TQFN package with 0.5mm lead pitch, and operates over

the -40°C to +115°C temperature range.

Applications

● Automotive Camera Applications

Benets and Features

● Ideal for Safety Camera Applications

• Works with Low-Cost 50Ω Coax (100Ω STP) Cables

• Error Detection of Video/Control Data

• High-Immunity Mode for Robust Control-Channel

EMC Tolerance

• Retransmission of Control Data Upon Error

Detection

• Best-in-Class Supply Current: 93mA (max)

• Pre/Deemphasis Allows 15m Cable at Full Speed

• 32-Pin (5mm x 5mm) TQFN Package with 0.5mm

Lead Pitch

● High-Speed Data Serialization for Megapixel

Cameras

• Up to 1.74Gbps Serial-Bit Rate

• 12.5MHz to 87MHz x 14 Bit + H/V Data

• 36.66MHz to 116MHz x 12-Bit + H/V Data

(through Internal Encoding)

● Multiple Modes for System Flexibility

• 9.6kbps to 1Mbps Control Channel in UART, I

(with Clock Stretch), or UART-to-I

C Modes

• Crosspoint Switch Accepts Any Input Bitmap

• Modes for Encoded VSYNC and HSYNC

● Reduces EMI and Shielding Requirements

• Programmable Output Spread Spectrum

• Tracks Spread Spectrum Applied at the Parallel

Input

• 1.7V to 3.6V I/O Supply

● Peripheral Features for Camera Power-Up and

Verification

• Built-In PRBS Generator for BER Testing

• Dedicated GPO for Camera Frame-Sync Trigger

and Other Uses

• Remote/Local Wake-Up from Sleep Mode

● Meets AEC-Q100 Automotive Specification

• -40°C to +115°C Operating Temperature

• ±8kV Contact and ±15kV Air IEC 61000-4-2 and

ISO 10605 ESD Protection

Ordering Information appears at end of data sheet.

19-8434; Rev 1; 2/17

CAM MAX96705 MAX96706

VIDEO

GPU

VIDEO

Simplied Block Diagram

MAX96705 16-Bit GMSL Serializer with High-Immunity/

Bandwidth Mode and Coax/STP Cable Drive

EVALUATION KIT AVAILABLE

General Description ............................................................................ 1

Applications .................................................................................. 1

Benefits and Features .......................................................................... 1

Simplified Block Diagram........................................................................ 1

Absolute Maximum Ratings ...................................................................... 6

Package Information ........................................................................... 6

32-Pin TQFN-EP.............................................................................6

DC Electrical Characteristics ..................................................................... 7

AC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Typical Operating Characteristics ................................................................ 13

Pin Configuration ............................................................................. 15

Pin Description ............................................................................... 15

Functional Block Diagram ...................................................................... 18

Detailed Description........................................................................... 23

Serial Link Signaling and Data Format ...........................................................23

Operating Modes .........................................................................23

Video/Configuration Link ...................................................................23

Single/Double Mode.......................................................................24

HS/VS Encoding .........................................................................24

Error Detection...........................................................................24

Bus Widths ..............................................................................24

Control Channel and Register Programming ......................................................28

Forward Control Channel...................................................................28

Reverse Control Channel...................................................................28

UART Interface ..........................................................................28

C Interface.............................................................................28

Remote-End Operation ....................................................................28

Clock-Stretch Timing ......................................................................28

Packet-Based I

C ...........................................................................28

Packet Protocol Summary ..................................................................29

Control-Channel Error Detection and Packet Retransmission ......................................29

GPO/GPI Control ...........................................................................29

Spread Spectrum ...........................................................................29

Cable Type Configuration .....................................................................29

Crossbar Switch ............................................................................29

Video Timing Generator ......................................................................29

Shutdown/Sleep Modes ......................................................................31

MAX96705 16-Bit GMSL Serializer with High-Immunity/

Bandwidth Mode and Coax/STP Cable Drive

www.maximintegrated.com

Maxim Integrated

│

TABLE OF CONTENTS

Configuration Link ........................................................................31

Serialization Disable ......................................................................31

Sleep Mode .............................................................................31

Power-Down Mode........................................................................32

Link Startup Procedure .......................................................................32

GMSL Register Map .........................................................................33

Applications Information........................................................................ 69

Parallel Interface ............................................................................69

Bus Data Width ..........................................................................69

Bus Data Rates ..........................................................................69

Crossbar-Switch Programming ..............................................................70

Recommended Crossbar-Switch Program Procedure ............................................70

Timing-Generator Programming ................................................................73

Double-Mode Alignment ......................................................................73

External High/Low Signal ..................................................................73

Align from HS or DE ......................................................................73

Control-Channel Interfaces....................................................................73

C ....................................................................................73

C Bit Rate .............................................................................73

Software Programming of Device Addresses ...................................................74

C Address Translation....................................................................74

Configuration Blocking.....................................................................74

Cascaded/Parallel Devices .................................................................74

UART ..................................................................................74

Base Mode ..............................................................................74

UART Timing ............................................................................74

UART-to-I

C Conversion ...................................................................76

UART Bypass Mode ......................................................................77

Device Address ..........................................................................77

Spread Spectrum ...........................................................................77

Manual Programming of the Spread-Spectrum Divider ..............................................77

Equation: ...............................................................................77

Board Layout ...............................................................................78

Power-Supply Circuits and Bypassing.........................................................78

High-Frequency Signals....................................................................78

ESD Protection .............................................................................78

MAX96705 16-Bit GMSL Serializer with High-Immunity/

Bandwidth Mode and Coax/STP Cable Drive

www.maximintegrated.com

Maxim Integrated

│

TABLE OF CONTENTS

(

CONTINUED

)

Compatibility with Other GMSL Devices .........................................................79

Device Configuration and Component Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Internal Input Pulldowns....................................................................79

Three-Level Configuration Inputs ............................................................79

C/UART Pullup Resistors .................................................................80

AC-Coupling Capacitors ...................................................................80

Cables and Connectors ....................................................................80

PRBS.....................................................................................80

GPI/GPO ..................................................................................80

Fast Detection of Loss-of-Lock ..............................................................81

Providing a Frame Sync (Camera Applications) .................................................81

Entering/Exiting Sleep Mode ..................................................................81

Typical Application Circuits ..................................................................... 82

Ordering Information .......................................................................... 82

Revision History .............................................................................. 83

Figure 1. Serial-Output Parameters............................................................... 18

Figure 2. Output Waveforms at OUT+, OUT-........................................................ 19

Figure 3. Single-Ended Output Template .......................................................... 19

Figure 4. Worst-Case Pattern Input ............................................................... 19

Figure 5. Parallel Clock Input Requirements ........................................................ 19

Figure 6. I

C Timing Parameters ................................................................. 20

Figure 7. Differential Output Template ............................................................. 20

Figure 8. Input Setup and Hold Times ............................................................. 21

Figure 9. GPI-to-GPO Delay .................................................................... 21

Figure 10. Serializer Delay...................................................................... 22

Figure 11. Link Startup Time .................................................................... 22

Figure 12. Power-Up Delay ..................................................................... 23

Figure 13. 24-Bit Mode Serial-Data Format......................................................... 25

Figure 14. 27-Bit High-Bandwidth Mode Serial-Data Format ........................................... 26

Figure 15. 32-Bit Mode Serial-Data Format......................................................... 27

Figure 16. Coax Connection .................................................................... 29

Figure 17. Crossbar Switch Dataflow .............................................................. 30

Figure 18. Sync-Signal Format For Video-Timing Generation .......................................... 30

Figure 19. State Diagram ....................................................................... 31

Figure 20. Crossbar-Switch Default Mapping ....................................................... 72

MAX96705 16-Bit GMSL Serializer with High-Immunity/

Bandwidth Mode and Coax/STP Cable Drive

www.maximintegrated.com

Maxim Integrated

│

LIST OF FIGURES

TABLE OF CONTENTS

(

CONTINUED

)

Figure 21. GMSL-UART Data Format for Base Mode ................................................. 75

Figure 22. GMSL-UART Protocol for Base Mode .................................................... 75

Figure 23. SYNC Byte (0x79).................................................................... 75

Figure 24. ACK Byte (0xC3)..................................................................... 75

Figure 25. Format Conversion Between GMSL UART and I

C with Register Address (I2CMETHOD = 0)........ 76

Figure 26. Format Conversion Between GMSL UART and I

C with Register Address (I2CMETHOD = 1) ........ 76

Figure 27. Human Body Model ESD Test Circuit ..................................................... 78

Figure 28. IEC 61000-4-2 Contact Discharge ESD Test Circuit ......................................... 78

Figure 29. ISO 10605 Contact Discharge ESD Test Circuit ............................................ 78

Table 1. Reverse Control-Channel Modes.......................................................... 28

Table 2. Link-Startup Procedure ................................................................. 31

Table 3. Input Data-Width Selection .............................................................. 68

Table 4. Data-Rate Selection.................................................................... 68

Table 5. Crossbar Output to Serial Link Map (D23:0) ................................................. 69

Table 6. Crossbar Output to Serial Link Map (D31:24 and Special Packets) ............................... 70

Table 7. Legend .............................................................................. 71

Table 8. Timing-Generator Parameter Restrictions ................................................... 72

Table 9. Output Spread ........................................................................ 76

Table 10. Spread Limitations .................................................................... 76

Table 11. Modulation Coefficients and Maximum SDIV Settings ........................................ 77

Table 12. Feature Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Table 13. Three-Level Configuration Input Map ..................................................... 79

Table 14. Suggested Connectors and Cables for GMSL............................................... 79

MAX96705 16-Bit GMSL Serializer with High-Immunity/

Bandwidth Mode and Coax/STP Cable Drive

www.maximintegrated.com

Maxim Integrated

│

LIST OF TABLES

LIST OF FIGURES

(

CONTINUED

)