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DS110DF111: Adopt Mode 0 Behavior

Part Number: DS110DF111

When PRBS31 10.3125 Gpps signal is input and the register is controlled as follows, CDR is unlock.

Could you tell me the correct sequence?

Without CDR reset(0x0A,0x00,0x0C) & assert 0x0A,0x0C,0x0C)command,CDR  will be lock.

(ADDR, VALUE, MASK)

(0xFF,0x0C,0x0C)

(0x00,0x04,0x04)

(0x0A,0x0C,0x0C)

(0x31,0x00,0x60)

(0x03,0x00,0xFF)

(0x40,0x00,0xFF)

(0x1E,0x08,0x08)

(0x2D,0x08,0x08)

(0x2D,0x02,0x07)

(0x15,0x00,0x47)

(0x0A,0x00,0x0C)

 

  • This TI retimer is configured for 10.3125G operation by default. it should be able to lock to 10.3125Gbps input data without any configuration. It appears you are attempting to force CTLE = 0x00 here as 0x03 = 0x00. Overall, these register settings seem like they should work.

    Question: Can you provide a full retimer channel register dump for the case where CDR lock issue is observed?

    Thanks,

    Rodrigo