TUSB551: Do you have some ideas about near the connector or CPU for the ?

Frank Xiao

Genius 12055 points

Part Number: TUSB551
Other Parts Discussed in Thread: SN65LVPE512

Hi team,

My customer wants to use the TUSB551 in X86 board.The distance between CPU and interface is 20inch.

i have checked the datasheet of the device, it has EQ and DE, it seems put the device any where is fine from my opinion, do you have some ideas about near the interface or CPU?

Thanks.

over 6 years ago

0 David (ASIC) Liu over 6 years ago

TI__Guru**** 178116 points

Frank

TUSB551 is a single-channel redriver that will compensate CPU TX, how about CPU RX?

You may want to take a look at SN65LVPE512, which is a dual-channel redriver.

Thanks
David

0 Frank Xiao over 6 years ago in reply to David (ASIC) Liu

TI__Genius 12055 points

Hi David

So we need to put 551 at CPU side right? Thanks

0 David (ASIC) Liu over 6 years ago in reply to Frank Xiao

TI__Guru**** 178116 points

Frank

The re-driver needs to be placed near the connector. The CPU should have a design guideline stating the distance requirement and customer needs to follow that when designing the re-driver.

Please take a look at my previous response, since TUSB551 is a single-channel re-driver, it will only compensating the CPU TX --- TUSB551 --- Device RX path, we may also need a re-driver to compensate the CPU RX --- re-driver --- Device TX path.

Thanks

David

Interface

Interface forum

TUSB551: Do you have some ideas about near the connector or CPU for the ?