TUSB1002A: TUSB1002A repeater board in cascade connection

Damodaran Nagarajan

Part Number: TUSB1002A

Hi,

We are using IC TUSB1002A repeater board in cascade connection. I need to understand insertion losses to improve the signal integrity and also for the selection of equivalization setting based on our block diagram.

over 4 years ago

0 Malik Barton57 over 4 years ago

TI__Guru 64326 points

Hi,

Can you share your block diagram? I can give some EQ setting suggestion.

0 Damodaran Nagarajan over 4 years ago in reply to Malik Barton57

Prodigy 80 points

Hi Malik,

Can you please share your email id

0 Malik Barton57 over 4 years ago

TI__Guru 64326 points

Hi,

Please feel free to share through E2E DM instead of posting here. I will send a friend request, please accept so we can continue to discuss.

0 Damodaran Nagarajan over 4 years ago in reply to Malik Barton57

Prodigy 80 points

Sure Malik.

0 Malik Barton57 over 4 years ago in reply to Damodaran Nagarajan

TI__Guru 64326 points

Continuing through E2E DM.

+1 Damodaran Nagarajan over 4 years ago in reply to Malik Barton57

Prodigy 80 points

Thanks a lot for the suggestion

+1 Damodaran Nagarajan over 4 years ago in reply to Malik Barton57

Prodigy 80 points

Thanks for the reply. I tried all the channel equalization setting range suggested for PCB 1& 2 for all the settings it worked. And what is the calculated insertion losses for PCB-1 and PCB-2 ?. And the reason for selecting VOD & gain for setting # 12 do you have any calculation reference example based on insertion losses selection (VID at 5 GHz = VOD x (10 -(Gv/20))?.

As you told it may change during USB compliance testing? Can you please suggest what can be done should we need to test eye diagram in hardware testing ? We dont have super speed signal testing

0 Malik Barton57 over 4 years ago in reply to Damodaran Nagarajan

TI__Guru 64326 points

Hi,

Correct setting 12 for both PCBs. DC boost is set to +1 for both channels with 1200 mV VOD. This setting covers the most applications but may be changed during the tuning process/compliance testing.

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TUSB1002A: TUSB1002A repeater board in cascade connection