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PDF MAX9272 Data sheet ( Hoja de datos )
| Número de pieza | MAX9272 | |
| Descripción | 28-Bit GMSL Deserializer | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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EVALUATION KIT AVAILABLE
MAX9272
28-Bit GMSL Deserializer for Coax or STP Cable
General Description
The MAX9272 compact deserializer is designed to
interface with a GMSL serializer over 50I coax or 100I
shielded twisted-pair (STP) cable. The device pairs with
the MAX9271 or MAX9273 serializers.
The parallel output is programmable for single or double
output. Double output strobes out half of a parallel word
on each pixel clock cycle. Double output can be used
with GMSL serializers that have the double-input feature.
The device features an embedded control channel that
operates at 9.6kbps to 1Mbps in UART and mixed UART/
I2C modes, and up to 400kbps in I2C mode. Using the
control channel, a microcontroller (FC) is capable of pro-
gramming serializer/deserializer and peripheral device
registers at any time, independent of video timing. Two
GPIO ports are included, allowing power-up and switch-
ing of the backlight in display applications and similar
uses. A continuously sampled GPI input supports touch-
screen controller interrupt requests.
For use with longer cables, the device has a program-
mable equalizer. Programmable spread spectrum is
available on the parallel output. The serial input 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 device is available in a 48-pin (7mm
x 7mm) TQFN-EP package with 0.5mm lead pitch and
operates over the -40NC to +105NC temperature range.
Applications
Automotive Camera Systems
Ordering Information appears at end of data sheet.
Typical Application Circuit appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX9272.related.
Benefits and Features
S Ideal for Camera Applications
Works with Low-Cost 50I Coax Cable and
FAKRA Connectors or 100I STP
Error Detection/Correction
9.6kbps to 1Mbps Control Channel in I2C-to-I2C
Mode with Clock Stretch Capability
Best-in-Class Supply Current: 90mA (max)
Double-Rate Clock for Megapixel Cameras
Cable Equalization Allows 15m Cable at Full
Speed
48-Pin (7mm x 7mm) TQFN-EP Package with
0.5mm Lead Pitch
S High-Speed Data Deserialization for Megapixel
Cameras
Up to 1.5Gbps Serial-Bit Rate with Single or
Double Output: 6.25MHz to 100MHz Clock
S Multiple Control-Channel Modes for System
Flexibility
9.6kbps to 1Mbps Control Channel in UART-to-
UART or UART-to-I2C Modes
S Reduces EMI and Shielding Requirements
Input Programmable for 100mV to 500mV
Single-Ended or 50mV to 400mV Differential
Programmable Spread Spectrum on the Parallel
Output Reduces EMI
Tracks Spread Spectrum on Serial Input
S Peripheral Features for Camera Power-Up and
Verification
Built-In PRBS Checker for BER Testing of the
Serial Link
Two GPIO Ports
Dedicated “Up/Down” GPI for Camera Frame
Sync Trigger and Other Uses
Remote/Local Wake-Up from Sleep Mode
S Meets Rigorous Automotive and Industrial
Requirements
-40NC to +105NC Operating Temperature
Q10kV Contact and Q15kV Air IEC 61000-4-2
ESD Protection
Q10kV Contact and Q30kV Air ISO 10605 ESD
Protection
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6383; Rev 1; 11/12
1 page  
MAX9272
28-Bit GMSL Deserializer for Coax or STP Cable
LIST OF FIGURES (continued)
Figure 22. START and STOP Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 23. Bit Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 24. Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 25. Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 26. Format for I2C Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 27. Format for Write to Multiple Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 28. Format for I2C Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 29. 2:1 Coax-Mode Splitter Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 30. Coax-Mode Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 31. State Diagram, Remote Microcontroller Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 32. Human Body Model ESD Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 33. IEC 61000-4-2 Contact Discharge ESD Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 34. ISO 10605 Contact Discharge ESD Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
LIST OF TABLES
Table 1. Power-Up Default Register Map (see Table 16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 2. Output Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 3. Data-Rate Selection Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 4. I2C Bit-Rate Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 5. MAX9262 Cable Equalizer Boost Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 6. Parallel Output Spread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 7. Modulation Coefficients and Maximum SDIV Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 8. Configuration Input Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 9. Startup Procedure for Video-Display Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 10. Startup Procedure for Image-Sensing Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 11. MAX9272 Feature Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 12. Staggered Output Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 13. Double-Function Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 14. Typical Power-Supply Currents (Using Worst-Case Input Pattern) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 15. Suggested Connectors and Cables for GMSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 16. Register Table (see Table 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Maxim Integrated
5
5 Page 
MAX9272
28-Bit GMSL Deserializer for Coax or STP Cable
Typical Operating Characteristics (continued)
(VAVDD = VDVDD = VIOVDD = 1.8V, DBL = low, TA = +25°C, unless otherwise noted.)
SERIAL LINK SWITCHING PATTERN
WITH 6dB PREEMPHASIS (PARALELL
BIT RATE = 50MHz, 10m STP CABLE)
MAX9272 toc07
SERIAL LINK SWITCHING PATTERN
WITH 6dB PREEMPHASIS (PARALELL
BIT RATE = 50MHz, 20m COAX CABLE)
MAX9272 toc08
50mv/div
200ps /div
1.5Gbps
MAXIMUM PCLKOUT FREQUENCY
vs. STP CABLE LENGTH (BER P 10-10)
60
OPTIMUM PE/EQ
SETTINGS
50mv/div
200ps /div
1.5Gbps
MAXIMUM PCLKOUT FREQUENCY
vs. COAX CABLE LENGTH (BER P 10-10)
60
6dB PE, EQ OFF
40
6dB PE, EQ OFF
40
NO PE, 10.7dB EQ
NO PE, 10.7dB EQ
20
NO PE, EQ OFF
BER CAN BE AS LOW AS 10-12 FOR
CABLE LENGTHS LESS THAN 10m
0
0 5 10 15
STP CABLE LENGTH (m)
NO PE, EQ OFF
20
BER CAN BE AS LOW AS 10-12 FOR
CABLE LENGTHS LESS THAN 10m
0
20 0 5 10 15 20
COAX CABLE LENGTH (m)
MAXIMUM PCLKOUT FREQUENCY
vs. ADDITIONAL DIFFERENTIAL CL (BER P 10-10)
60
10m STP CABLE OPTIMUM PE/EQ
50 SETTINGS
6dB PE, EQ OFF
40
25
30
NO PE, 10.7dB EQ
20 NO PE, EQ OFF
10 BER CAN BE AS LOW AS 10-12 FOR
CL < 4pF FOR OPTIMUM PE/EQ SETTINGS
0
0 2 4 6 8 10
ADDITIONAL DIFFERENTIAL LOAD CAPACITANCE (pF)
Maxim Integrated
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX9272.PDF ] | |
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