DS90UB953-Q1: GPIOx latency

Nao

Genius 4905 points

Part Number: DS90UB953-Q1

Hi, E2E members

How long is the maximum latency delta of the GPIO data transmitted across links that DS90UB953 and DS90UB954?

* not set FC_GPIO_EN = 0x00

Regards,
Nao

over 7 years ago

0 Hamzeh Jaradat over 7 years ago

TI__Guru** 116340 points

Hello Nao,

The latency depends on the used clocking Mode:

Synchronous Mode -- 1.5 uS
Non-Synchronous Modes -- 3.2 uS
DVP Mode -- 12.2 uS

All these numbers are typical.

0 Nao over 7 years ago in reply to Hamzeh Jaradat

Genius 4905 points

Hi, Hamzeh

Thank you for your reply.

Regards,
Nao

0 Nao over 7 years ago in reply to Nao

Genius 4905 points

Hi, Hamzeh

I have additional questions for latency.

1. How long is the maximum latency T2?

2. Do you are guaranteed T1 = T3? If not, How long is the maximum latency T1 and T3?

Regards,

Nao

0 Hamzeh Jaradat over 7 years ago in reply to Nao

TI__Guru** 116340 points

Hello Nao,

One thing to mention is the latency numbers listed by me above are the Back Channel latencies. The forward channel latency (T2) is typically ~ 225 nS.
Yes, T1 is equal to T3

0 Nao over 7 years ago in reply to Hamzeh Jaradat

Genius 4905 points

Hello, Hamzen,

Thank you for your prompt reply and thank you for always helping me!!

Regards,
Nao

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DS90UB953-Q1: GPIOx latency