TUSB9261-Q1: SATA signal TX/RX swap

Feng bin Su

Expert 8700 points

Part Number: TUSB9261-Q1
Other Parts Discussed in Thread: TUSB9261, TUSB9261DEMO

Hi team,

My customer is using our TUSB9261-Q1 for SATA and they connect TX/RX incorrect pin.

They would like to know whether TUSB9261-Q1 SATA signal TX/RX can be swap or not. Thanks.

over 4 years ago

0 Brian Zhou over 4 years ago

TI__Guru*** 145335 points

no, TX /RX can not swap

0 Malik Barton57 over 4 years ago in reply to Brian Zhou

TI__Guru 64326 points

Hi Feng,

Brain is correct TX and RX lanes cannot swap. TUSB9261 does have a option to swap polarity of TX and RX (swap P and N pins). This can be done through different FW available on ti.com.

0 Kien over 4 years ago in reply to Malik Barton57

TI__Expert 3991 points

Hello,

There is only 1 FW provided on ti.com which supports the HW design of TUSB9261DEMO EVM.

Unfortunately, we didn't follow the EVM's design and thus we'll need a different FW which will swap P and N pins of TX.

How can we get this FW?

0 Malik Barton57 over 4 years ago in reply to Kien

TI__Guru 64326 points

Hi Kien,

If the installer on ti.com was used then a file path similar tot eh below should exist. The Alternate SATA Polarity FW folder holds the different options for polarity swap of TX P & N and/or RX P & N.

C:\Program Files (x86)\Texas Instruments\TUSB926x Firmware\Alternate SATA Polarity FW

0 Kien over 4 years ago in reply to Malik Barton57

TI__Expert 3991 points

Hi Malik,

Thanks for your prompt support. I was able to make it work by downloading the file TUSB926x_FW_v1.06_SATA_NO_POLARITY_SWAP.hex

However, it only works with 2TB or less HDD. Is it possible to make it work with 16TB HDD?

0 Malik Barton57 over 4 years ago in reply to Kien

TI__Guru 64326 points

Hi Kien,

Could you give more details on exactly what you are seeing with the 16 TB HDD?

0 Kien over 4 years ago in reply to Malik Barton57

TI__Expert 3991 points

Malik,

I've found that the FW supports MBR partition which cap the max capacity at 2TB. My HDD is using GPT partition. That leads to the issue. Is it possible to have a FW supporting GPT?

0 Malik Barton57 over 4 years ago in reply to Kien

TI__Guru 64326 points

Hi Kien,

Currently we do not have FW that support GPT however the FW source code in on ti.com and can be modified to achieve this. We currently do not have resource to support FW development.

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TUSB9261-Q1: SATA signal TX/RX swap