CYUSB3304-68LTXC eval board schematic errata

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Vika_4562056
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Hi,

I am making a design based on the CYUSB3304-68LTXC USB3.0 hub. The reference document is the eval kit schematic. There is a discrepancy on the interfacing of the dwnstream ports to the USB Type A connectors. I have pasted a screen-shot below.

pastedImage_0.png

It shows the pins StdA_SSRX+ and StdA_SSRX- connected to DS1_RXM and DS1_RXP respectively in the IC. How is that possible ? Shouldnt the connections be swapped ? And what of the StdA_SSTX- and StdA_SSTX+ ? Should this also be so ?

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YiZ_31
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Hi,

That's the feature of USB 3.0 signal. The polarity can be swapped on USB 3.0 differential pairs. SSRX+ and SSRX- can be swapped. SSTX+ and SSTX- can also be swapped. USB Differential Pair Pin Inversion - KBA218753

Regards,
Eddie

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YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi,

That's the feature of USB 3.0 signal. The polarity can be swapped on USB 3.0 differential pairs. SSRX+ and SSRX- can be swapped. SSTX+ and SSTX- can also be swapped. USB Differential Pair Pin Inversion - KBA218753

Regards,
Eddie

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