DS90UB954-Q1:

peiyq

Part Number: DS90UB954-Q1

Hi TI，

We are using the combination of DS90UB954 and DS90UB953, the POC filter on the DS90UB954 has a circuit for 4G on the board. When using a 4G filter on a board as it is when the data rate is 2 Gbps in synchronous mode, what kind of problems maybe happen?

Also, can you tell me how to support the data rate of 2 Gbps without changing the board layout (for example, changing some parts to get closer to a 2G filter) since we already gerbout the PCB?

thanks

peiyuanqing

over 5 years ago

0 Sally Cheung95 over 5 years ago

TI__Expert 5480 points

Hi Peiyuanqing,

What back channel rate are you using?

Thanks,
Sally

0 peiyq over 5 years ago in reply to Sally Cheung95

Expert 1400 points

Hi Sally，
back channel rate we are using is 25 Mbps，could you check it？
thanks
peiyuanqing

0 peiyq over 5 years ago in reply to peiyq

Expert 1400 points

Hi Sally，
Could you reply it as soon as possible？
thanks
Pei yuanqing

0 Sally Cheung95 over 5 years ago in reply to peiyq

TI__Expert 5480 points

Hi Peiyuanqing,

According to the link below, the typical 4Gbps PoC network in the 960 d/s (applicable for 954/953), covers the frequency range from ~10 MHz to 3+ GHz. You should still be able to use the those guidelines for your 2Gbps configuration with 25 Mbps BCC as it is covered within that range. If you are still having problems, let me know.

e2e.ti.com/.../755695

THanks,
Sally

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DS90UB954-Q1: