cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Mentor
Mentor
685 Views
Registered: ‎06-16-2013

Unsupport feature for DisplayPort Rx Subsystem v2.1 PG233

Jump to solution

Hi all

 

I'm investigating DisplayPort Rx Subsystem (PG233 Ver. 2.1) now.

 

According to this pdf file, DP Rx doesn't support "Video AXI4-Stream interface is not scalable with dynamic pixel mode selection".

However, I already examined DP Rx with example design which behaived like dynamic pixel mode selection and this resule was fine.

So, I'm confused.

 

What does it mean "Video AXI4-Stream interface is not scalable with dynamic pixel mode selection" ?

Does it point out that AXI4-Stream can not change color format ? (RGB888, YUV422, YUV444 and so on) ???

 

Could anyone tell me it ?

 

*)

page 6 on PG233

https://www.xilinx.com/support/documentation/ip_documentation/dp_rx_subsystem/v2_1/pg233-displayport-rx-subsystem.pdf

 

Best regards,

 

0 Kudos
1 Solution

Accepted Solutions
Highlighted
Moderator
Moderator
670 Views
Registered: ‎11-09-2015

Re: Unsupport feature for DisplayPort Rx Subsystem v2.1 PG233

Jump to solution

Hi @watari,

Displayport SS IP is changing the pixel per clock depending on how many lanes are trained. There is nothing in the UG934 that defines. The user is expected to do a pixel remapper.

In the example design you will not see any issue because this is a pass-through. You do not really care about the AXI4 data. But you would have issue if you are using another IP as the VPSS.

I believe this is what is meant by this line.

Regards,


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

View solution in original post

0 Kudos
2 Replies
Highlighted
Moderator
Moderator
671 Views
Registered: ‎11-09-2015

Re: Unsupport feature for DisplayPort Rx Subsystem v2.1 PG233

Jump to solution

Hi @watari,

Displayport SS IP is changing the pixel per clock depending on how many lanes are trained. There is nothing in the UG934 that defines. The user is expected to do a pixel remapper.

In the example design you will not see any issue because this is a pass-through. You do not really care about the AXI4 data. But you would have issue if you are using another IP as the VPSS.

I believe this is what is meant by this line.

Regards,


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

View solution in original post

0 Kudos
Highlighted
Mentor
Mentor
645 Views
Registered: ‎06-16-2013

Re: Unsupport feature for DisplayPort Rx Subsystem v2.1 PG233

Jump to solution

Hi @florentw

 

Thank you for your explanation.

Got it.

We will consider the structure of pixel remapper for our requirement.

 

Best regards,

 

0 Kudos