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DS90UB947-Q1: How to configue single link mode

Lee, Sam
Expert 6365 points

Part Number: DS90UB947-Q1

Hi team,

I have a quick question about single link mode. Can you anwer the followings?

In a configuration of single-ended and single FPD link mode of DOUT0,

 

1. If trying to disable DOUT1 in DS90UB947-Q1, is it okay to change only the following bits? Or any other bits?

 

     DUAL_CTL1(0x58) FORCE_DUAL(Bit1) = 0: Single FPD-Link III operation

                                     FORCE_LINK(Bit0) = 1 : Forced Single or Dual FPD-LINK III mode

 

2. In DS90UB947-Q1, is there a register to be able to check which link mode is set?

 

3. For unused pins of DOUT1(-) terminated with 50ohm and DOUT1(+) left floating, does DS90UB947-Q1 recognize the mode automatically as single FPD link of DOUT0?

 

 

Thanks,

Sam Lee

 

  • 0
    TI__Mastermind 30515 points

    Sam,

    Please check below comments:

    1. yes, it is exact. the default setting of reg. 0x5B is to select the FPD-Link port automatically, you can force UB947 work at single FPD-Link mode based on reg. 0x5B[1:0] bits;

    2. you can check reg. 0x5A in ub947. Also, ub948 has similar reg. to check the operation mode

    3. unused dout1 can be left floating directly certainly.

    best regards,

    Steven