DS90UH947-Q1: Communication error

Ning

Prodigy 140 points

Part Number: DS90UH947-Q1

Hi TI Engineers:

We used 2 types FPDLINK IC as below:

1.DS90UH947TRGCRQ1

2.DS90UH948TNKDRQ1

Now I found a communication error between 947 and 948, and I summarized this error with EXCEL.

Please refers to the attachment, I'm looking forward to your reply!

Thank you!

Touch I2C Communication error.xlsx

over 6 years ago

0 Hamzeh Jaradat over 6 years ago

TI__Guru** 116060 points

Hello Ning,

the Internal Oscillator clock is not supposed to be used for initializing either of the devices, or establishing I2C communication with any slave device. The internal Clock should be only used to establish LOCK, BIST mode and Patter Generation only.

For remote I2C communication you need to wait for a stable PCLK.

0 Ning over 6 years ago in reply to Hamzeh Jaradat

Prodigy 140 points

Hello Hamzeh,

I got it, thanks a lot for your help!

Best Regards

Ning

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DS90UH947-Q1: Communication error