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DS90UB934-Q1: How to enable 934 CML output for test

Part Number: DS90UB934-Q1

Hi, Team;

My customer want to test 934 link qualify from UB934 CML output for the FPD LInk III input from RIN0. They change the registers according to datasheet registers list as below but seems 934's CML output is not enabled.

Can you help to check and advise? 

board.WriteReg(0xB0,0x14)
board.WriteReg(0xB1,0x00)
board.WriteReg(0xB2,0x80)
board.WriteReg(0xB1,0x02)
board.WriteReg(0xB2,0x20)
board.WriteReg(0xB1,0x03)
board.WriteReg(0xB2,0x28)
board.WriteReg(0xB1,0x04)
board.WriteReg(0xB2,0x28)
board.WriteReg(0xB0,0x18)
board.WriteReg(0xB1,0x0F)
board.WriteReg(0xB2,0x01)
board.WriteReg(0xB1,0x10)
board.WriteReg(0xB2,0x02)