TLK1501: TLK1501 about RX_DV and RX_ER issue

Mickey Zhang

Genius 12080 points

Part Number: TLK1501

Hi Team,

The customer is using TLK1501.

The registers configuration are as follows:

LOOPEN=0, PRBSEN=0, ENABLE=1, LCKREFN=0, TX_EN=1, TX_ER=0

For the sender, it sends a fixed 16 bit data each time. Every 1ms force TX_DV=0 and send the synchronization code 4 times.

For the receiver, it can receive the data. But occasionally the received data and the sent data are inconsistent. RX_DV=1 and this value remains the same.

But RX_ER changes between 0 and 1.

What is reason? How to solve the issue?

Best Wishes,
Mickey Zhang
Asia Customer Support Center
Texas Instruments

over 8 years ago

0 Mickey Zhang over 8 years ago

TI__Genius 12080 points

Hi Team,

Can anyone see my issue? The customer is waiting for my reply.

0 Luis Omar Moran over 8 years ago

TI__Genius 16150 points

Hi Mickey,

Sorry for the delayed response. According your configuration, the TLK1501 is set in transmit only mode (LCKREF=0), please try LCKREF=1 (pull-up) to lock the receiver to the received data stream (must receive valid codes from the synchronization state machine before the transmitter is enabled).

Best Regards,
Luis Omar Moran
High Speed Interface
SWAT Team

0 Mickey Zhang over 8 years ago in reply to Luis Omar Moran

TI__Genius 12080 points

Hi Luis,

Thanks for your reply. I will confirm with the customer.

0 Luis Omar Moran over 8 years ago in reply to Mickey Zhang

TI__Genius 16150 points

Hi Mickey,

Any comment/feedback from the customer on this?

Thanks,
Luis

0 Mickey Zhang over 8 years ago in reply to Luis Omar Moran

TI__Genius 12080 points

Hi Luis,

I have told the customer to post on our E2E forum.

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TLK1501: TLK1501 about RX_DV and RX_ER issue