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DS90UB927Q-Q1: Design questions

Naser S.
Genius 11605 points
Part Number: DS90UB927Q-Q1
Other Parts Discussed in Thread: DS90CR287

1) Can this part drive a 75Ohm coaxial cable directly (BNC connectors)?
What is the max coax cable length possible when FPD Link input is 85MHz?
Is there  a recomended app note containing this information?

2) Can a DS90CR287 drive the 28-bit FPD Link data interface of the DS90UB927Q-Q1 directly?

3) Is DS90UB927Q-Q1 scheduled for EOL at any point in the near future?

4) Is the FPD-Link III high speed protocol specified and available to the public or does some FPGA IP exist to interface directly to the high speed output of a DS90UB927Q-Q1?

Regards,

Naser

  • 0
    TI__Genius 10475 points
    Naser,
    The DS90UB927 is designed to support 100-ohm STP interconnect upto 10 meters at PCLK upto the max of 85 MHz. You can refer to the product datasheet for additional information.
    There is no planned EOL for this product at this time.
    The FPD-Link III is a proprietary standard.
  • 0 in reply to Palaniappan Manickam
    TI__Genius 11605 points

    Hi  Palaniappan Manickam:

    From customer:

    Could you please answer my questions #2 from original message?  Copied below again for reference
    2)) Can a DS90CR287 drive the 28-bit FPD Link data interface of the DS90UB927Q-Q1 directly?
    Additionally, I have seen some app notes that imply that  DS90UB927Q-Q1 can drive a COAX cable?
    You mention 100-ohm STP but I am interested in the COAX case.
    Is COAX a supported interconnect?
    Do you have app notes that describe the distances that can be achieved with PCLK of 85MHz?
    can the  DS90UB927Q-Q1 drive the coax DIRECTLY or is a cable driver needed?
  • 0 in reply to Naser S.
    TI__Expert 8165 points

    Hello-

    It is possible to directly interface the DS90CR287 to DS90UB927-Q1.

    While in theory the DS90UB927-Q1 can drive coax cables, it has only been optimized for STP, so officially only STP cables are supported.  Display SerDes Overview page lists devices that support coax cables.  Here is the link:

    Regards,

    Davor