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Visitor kenclo
Visitor
752 Views
Registered: ‎07-03-2018

UHD SDI RX SS IP parameters setting to support only HD SDI

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When one open the IP example for the UHD SDI RX SS IP, a SDI pass through example is opened. The subsystem option called "UHD-SDI Standard" is set to 12G SDI 8DS. If my design only need to support HD SDI mode and below, what option should I select?. The choices are 3G, 6G and 12G but no HD ??. The UHD SDI RX SS IP also requires a video_out_clk, the default example is set to 300 MHz. Again for HD SDI mode support only, should this be changed to 74.25 MHz?

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Moderator
Moderator
712 Views
Registered: ‎04-12-2017

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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Hello @kenclo,

 

UHD-SDI example design is dedicated to run the bit-rates and resolutions supported by UHD-SDI SMPTE standard.

 

If you wish to run the HD-SDI resolution you can select 3G-SDI option while generating the example design.

3G-SDI option will be closest to the bit-rate supported by HD-SDI and you can also run dual-link HD-SDI if it's in pipeline of your development.

 

You can reconfigure the output clock requirements from zynq_us_ss block by changing the settings of clock wizard underneath of it.

You cannot make much changes into uhdsdi_gt block for changing bit rates and that is not recommended as well.

 

Thank you.

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5 Replies
Moderator
Moderator
713 Views
Registered: ‎04-12-2017

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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Hello @kenclo,

 

UHD-SDI example design is dedicated to run the bit-rates and resolutions supported by UHD-SDI SMPTE standard.

 

If you wish to run the HD-SDI resolution you can select 3G-SDI option while generating the example design.

3G-SDI option will be closest to the bit-rate supported by HD-SDI and you can also run dual-link HD-SDI if it's in pipeline of your development.

 

You can reconfigure the output clock requirements from zynq_us_ss block by changing the settings of clock wizard underneath of it.

You cannot make much changes into uhdsdi_gt block for changing bit rates and that is not recommended as well.

 

Thank you.

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Xilinx Employee
Xilinx Employee
673 Views
Registered: ‎12-02-2009

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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Yes, HD-SDI mode clock has to be updated to 74.25/1.001 MHz from 300 MHz.

Selecting 3-G SDI as standard in UHD-SDI TX & RX Subsystem Vivado gui will be sufficient for HD-SDI mode.

 

 

 

UHD-SDI GT IP : 

Select the datapath width as 20 for TX & RX

 

 

Visitor kenclo
Visitor
651 Views
Registered: ‎07-03-2018

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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In your reply, you mentioned select the datapath width as 20 for TX & RX. Where is this option at?. See attachment. I made the following changes: video_out_clk is now 74.25 MHZ rather than 300 MHz, the UHD-SDI Standard is now 3G SDI rather than 12G SDI 8DS. When I ran the example application(elf), it seem to be stuck at the SDI RX initialized of datastream. (see xsdi_example.c). I proceeded to change the setting back to 12G SDI 8DS mode, the application now runs but with flickers on the screen

 

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Moderator
Moderator
639 Views
Registered: ‎04-12-2017

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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Hello @kenclo,

 

You will need to edit XSDI_example.c file as well to set the clock frequency for 74.25Mhz.

I can see that you have not edited the driver file after reviewing your attachment.

 

Thank you.

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Moderator
Moderator
588 Views
Registered: ‎11-09-2015

Re: UHD SDI RX SS IP parameters setting to support only HD SDI

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HI @kenclo,

 

Do you have any updates on this? Was the replies from @kka and @kvasantr enough for you?

 

If your question is answered or your issue is solved, please kindly mark the response which helped as solution (click on "Accept as solution" buton below the reply)

If this is not solved/answered, please reply in the topic giving more information on your current status.

Thanks and Regards,


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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