Hello,
My customer has been using DS125DF1610 and they found the one channel lost lock during first round debugging. The related channel register is set as the following.
//init step
//reset retimer
//select retimer1 shared reg
0xff, 0x00
//25m ref clock
0x02,0x00
//select retimer1 channel reg
0xff, 0x01
//select retimer1 channel 10
0xfd, 0x04
0xfc, 0x00
//cdr reset
0xa, 0x1c
//Adapt Mode Configuration
0x31, 0x60
//enable dfe
0x1e, 0xe1
//date rate select
0x2f, 0xb6
//no cross point
//CTLE Bandwidth Select
0x8d, 0x00
//Edge rate control and VGA Configuration
0x8e, 0x02
//enable cdr lock and signal interrupt
0x79, 0x13
--cdr reset release
0xa 0x00
1、Could anyone help check the register setting and suggest if there is anything wrong?
2、0x2f,reigister is 0xb6, retimer register 0x34 shows ppm err, why this happens?is it related to data rate or clocking?
3. Could we provide a reference setting for this device?