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DS90UB948-Q1: DS90UB948 hardware design problem

boer.deng
Expert 1085 points
Part Number: DS90UB948-Q1

May I ask you the following questions?

1: what do IC feet 62 and 63 do?

2: are feet 62 and 63 below connected correctly?If incorrect, what effect can this kind of connect method have?What is the recommended method?

3: the following picture is the description of 62 and 63 in the technical specification. Could you please tell me whether the connection method of feet 62 and 63 shown in the picture of the second question is correct according to the description of the following picture?

  • 0
    TI__Mastermind 30515 points

    Boer:

    1: what do IC feet 62 and 63 do?

    TI: as you posted here, the CMLOUT is used to "monitor" FPD-Link recovered data (FC) quality. This is optional in the real design.

    2: are feet 62 and 63 below connected correctly?If incorrect, what effect can this kind of connect method have?What is the recommended method?

    TI: Yes, it is right. 2pcs AC coupling cap. in diff. pin + 1pcs 100ohms diff. ohms.

    3: the following picture is the description of 62 and 63 in the technical specification. Could you please tell me whether the connection method of feet 62 and 63 shown in the picture of the second question is correct according to the description of the following picture?

    TI: yes.

    rgds,

    Steven