SN65LVPE502A / USB3.0 redriver and DisplayPort1.2 redriver

K.Yaita

Guru 29720 points

Other Parts Discussed in Thread: SN65LVPE502A, SN75DP130

Hi,

I'd like to ask a simple question between USB3.0 redriver and DP1.2 redriver.

For example, is SN65LVPE502A(USB3.0 redriver) available for DisplayPort1.2 redriver?

I understood SN75DP130 is best suited to DP1.2 redriver, but my customer wants to know that.

I think data rate of USB3.0 is 5.0Gbps(MAX) and DP1.2 is 5.4Gbps(MAX), so it seems available.

He assumes 1 lane and thinks it isn't necessary to care about Link Training.

Could you give me your comment please?

Best Regards,

Yaita

over 11 years ago

0 Elias Villegas M. over 11 years ago

TI__Guru* 76130 points

Hello Yaita-san,

The LVPE502A is not designed to re-drive a DP Link

The 502A has two differential channels, a TX pair and a RX pair, whereas a DP Link requires only TX pairs.

Regards.

0 K.Yaita over 11 years ago in reply to Elias Villegas M.

Guru 29720 points

Elias-san,

Thank you for your reply.

Yes, LVPE502A has two channels. My customer assumes TX pair only.

Is there other reasons that LVPE502A can't be used as DP1.2 redriver?

This is my customer's simple doubt...so if you have additional information, please let me know.

Best Regards,

Yaita

0 Elias Villegas M. over 11 years ago in reply to K.Yaita

TI__Guru* 76130 points

Hello Yaita-san,

The LVPE502A will have to detect 50ohm far-end terminations in both directions in order to enable its internal terminations.

The LVPE502A is designed to enter and exit on/from USB 3.0 states, like RX.DETECT, POLLING, COMPLIANCE, etc. I don't think these states match exactly the DP spec.

Regards.

0 K.Yaita over 11 years ago in reply to Elias Villegas M.

Guru 29720 points

Hello Elias-san,

I see. Thank you for your information!

Best Regards,

Yaita

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SN65LVPE502A / USB3.0 redriver and DisplayPort1.2 redriver