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PDF MAX9272A Data sheet ( Hoja de datos )
| Número de pieza | MAX9272A | |
| Descripción | 28-Bit GMSL Deserializer | |
| Fabricantes | Maxim Integrated | |
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MAX9272A
EVALUATION KIT AVAILABLE
28-Bit GMSL Deserializer for Coax or STP Cable
General Description
The MAX9272A compact deserializer is designed to
interface with a GMSL serializer over 50Ω coax or 100Ω
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. Using the control chan-
nel, a microcontroller (µC) can program the serializer/
deserializer and peripheral device registers at any time,
independent of video timing. Two programmable GPIO
ports and a continuously sampled GPI input are available.
For use with longer cables, the device has a program-
mable equalizer. Programmable spread spectrum is avail-
able on the parallel output. The serial input meets ISO
10605 and IEC 61000-4-2 ESD standards. The core sup-
ply 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 -40ºC to +105ºC 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/MAX9272A.related.
Benefits and Features
●● Ideal for Camera Applications
• Works with Low-Cost 50Ω Coax Cable and
FAKRA Connectors or 100Ω 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
●● High-Speed Data Deserialization for Megapixel
Cameras
• Up to 1.5Gbps Serial-Bit Rate with Single or
Double Output: 6.25MHz to 100MHz Clock
●● Multiple Control-Channel Modes for System Flexibility
• 9.6kbps to 1Mbps Control Channel in UART-to-
UART or UART-to-I2C Modes
●● 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
●● 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
●● Meets Rigorous Automotive and Industrial
Requirements
• -40ºC to +105ºC Operating Temperature
• ±10kV Contact and ±15kV Air IEC 61000-4-2
ESD Protection
• ±10kV Contact and ±30kV Air ISO 10605 ESD
Protection
19-7404; Rev 0; 5/14
1 page  
MAX9272A
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 2. Output Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 3. Data-Rate Selection Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 4. I2C Bit-Rate Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 5. 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. MAX9272A 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
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Maxim Integrated │ 5
5 Page 
MAX9272A
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)
MAX9272A toc07
SERIAL LINK SWITCHING PATTERN
WITH 6dB PREEMPHASIS (PARALELL
BIT RATE = 50MHz, 20m COAX CABLE)
MAX9272A toc08
50mv/div
200ps /div
1.5Gbps
MAXIMUM PCLKOUT FREQUENCY
vs. STP CABLE LENGTH (BER ≤ 10-10)
60
OPTIMUM PE/EQ
SETTINGS
50mv/div
200ps /div
1.5Gbps
MAXIMUM PCLKOUT FREQUENCY
vs. COAX CABLE LENGTH (BER ≤ 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)
20
NO PE, EQ OFF
20
BER CAN BE AS LOW AS 10-12 FOR
CABLE LENGTHS LESS THAN 10m
0
0 5 10 15 20
COAX CABLE LENGTH (m)
25
MAXIMUM PCLKOUT FREQUENCY
vs. ADDITIONAL DIFFERENTIAL CL (BER ≤ 10-10)
60
10m STP CABLE
OPTIMUM PE/EQ
SETTINGS
50
6dB PE, EQ OFF
40
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)
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Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX9272A.PDF ] | |
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