Hi team,
For UB948 AC-coupling cap selection, how to understand below screenshot? Is it a typo, both items are for RIN[1:0]+?
For UB947, what should we do for Dout1- and Dout1+ if we only use 1 link FPD-LINK output and work as coax mode?
For UB947, what is the difference between number 1 and 2? Same question between 3 and 4.
Thanks!
BR
Jiawei
Hello Jiawei,
For UB948 AC-coupling cap selection, how to understand below screenshot? Is it a typo, both items are for RIN[1:0]+?
Yes, this is a typo. The second line should be for RIN[1:0]-
For UB947, what should we do for Dout1- and Dout1+ if we only use 1 link FPD-LINK output and work as coax mode?
For DOUT+ you can use any value between 33- 100nF, and for DOUT- you should use half the value of the DOUT+.
For UB947, what is the difference between number 1 and 2? Same question between 3 and 4.
There is no difference, #1 and #2 are the same.
Hi Hamzeh,
Thanks for your support.
For DOUT+ you can use any value between 33- 100nF, and for DOUT- you should use half the value of the DOUT+.
For UB947, if we only use 1 link FPD-LINK output, what should I do for DOUT1+/-? NC them or what?
For UB947>>UB948 coax system, I met 948 unlock issue (948 never lock).
UB947: Single OLDI port input, 1 link FPD-LINK output
UB948: 1 link FPD-LINK input, single OLDI port output
I checked 947 and 948 schematic as datasheet reference schematic, and also checked the MODE_SEL of UB947/UB948, the PCB layout of UB947/UB948.
947 mode_sel:
948 mode_sel:
What things can we check? I think it's really strange.
BR
Jiawei
