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DAC38RF82: DAC38RF82 RX[0..7] input channnel electrical level(CML)

Prodigy 60 points

Replies: 10

Views: 256

Part Number: DAC38RF82

THE FPGA can't configure the output pin level to the CML, then how to understand the cml level?? The FPGA GTH pin how to connect with the DAC RX[0:7] interface?

  • Hi William
    We have received your question. One of our DAC experts will provide a more detailed response soon.
    Best regards,
    Jim B
  • William,

    The FPGA must be able to support the physical layer of the JESD204B standard if it is to work with the JESD204B DAC38RF82. What FPGA are you trying to use? If the transceivers support the standard, it will work with this part.

    Regards,

    Jim

  • In reply to jim s:

    We will use xilinx Kintex UltraScale FPGA KU060,which is able to support the JESD204B standard.The design is below,The DAC_RXP7and DAC_RXN7 are the FPGA GTH differential pins,which are connect with the DAC38RF82 pins RX7P and RX7N .Could you help me evaluate the design is available?

  • In reply to William Wong:

    William,

    Under the DAC38RF82EVM product folder on the TI website you can download an example firmware project that is used with a Xilinx KCU105 evaluation board to interface to a DAC38RF82EVM. You find other examples as well on the Xilinx website.

    Regards,

    Jim

  • In reply to jim s:

    hello,Jim

    If we could select the DAC B output when DAC38RF82 is working in only one DAC mode ?

  • In reply to William Wong:

    William,

    DAC B is not available in single DAC mode.

    Regards,

    Jim

  • In reply to jim s:

    Jim,
    when DAC38RF82 is working in Dual DAC mode,Could we configure the DAC A in sleep mode? Then, Is DAC B only output?
  • In reply to William Wong:

    William,

    Yes.

    Regards,

    Jim

  • In reply to jim s:

    Jim,
    Firstly,thank you very much. Secondly,If could disable TXENABLE of DAC A and enable TXENABLE of DAC B to make only DAC B output?
  • In reply to William Wong:

    William,

    Yes, you can turn off a channel by disabling the TXEN signal. There is a software register for both channels so you can turn off either one or both.

    Regards,

    Jim

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