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Participant bhanu27
Participant
250 Views
Registered: ‎05-10-2019

How to SWAP MIPI P AND N for a data lane, C_DL_IO_SWAP parameter

Hi,

We have an issue on our board where P and N lanes are swapped. I was wondering how can i swap P and N lanes for MIPI IP. I see following properties for MIPI RX subsystem IP.

C_DL1_IO_SWAP.

Let me know if anyone has successfully implemented IO SWAP using this parameter

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Xilinx Employee
Xilinx Employee
219 Views
Registered: ‎07-16-2019

Re: How to SWAP MIPI P AND N for a data lane, C_DL_IO_SWAP parameter

Hi,

Unfortunately, XILINX MIPI D-PHY IP does not support P/N swap.

Here is a similar question and answer on another forum thread where another solution is possible: https://forums.xilinx.com/t5/Video/Swap-polarity-MIPI-D-Phy-HS-LVDS-input/td-p/1021113

I hope this helps!

Ebrahim

Participant bhanu27
Participant
120 Views
Registered: ‎05-10-2019

Re: How to SWAP MIPI P AND N for a data lane, C_DL_IO_SWAP parameter

Hi Ebrahim,

When C_DL_IO_SWAP parameter is True for lane 1 and lane2. The implemented netlist shows the N and P are swapped for Data lane 1 and Data lane 2. Please see snapshot attached.

Could you please check with the MIPI CSI2 RX IP team to see if there is any option to SWAP the P and N for a data lane.

Best Regards

Implementation_netlist.png
Implemented_netlist_view_Swap_DLane1_2.png
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Moderator
Moderator
55 Views
Registered: ‎11-09-2015

Re: How to SWAP MIPI P AND N for a data lane, C_DL_IO_SWAP parameter

Hi @bhanu27 

As per the topic refered by @ebrahimm 

C_DL**_IO_SWAP is a hidden parameter for internal debug. Please ignore.

This is not supported


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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