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Observer ain0102
Observer
1,106 Views
Registered: ‎02-06-2018

What signal should be connected to VDMA to mm2_cfync?

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Hi.

I use Zedboad and FMC-HDMI modules.

HDMI inputs were connected to VDMA write channels, and VDMA read channels were connected to HDMI outputs.

What should be connected to VDMA mm2_cfync?

I need help.
Thank you.

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1 Solution

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Xilinx Employee
Xilinx Employee
1,164 Views
Registered: ‎08-02-2011

Re: What signal should be connected to VDMA to mm2_cfync?

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You Should put the S2MM channel in 'TUSER" mode for fsync.

Synchronization between read and write sides happens via the genlock mechanism.
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4 Replies
Xilinx Employee
Xilinx Employee
1,076 Views
Registered: ‎08-02-2011

Re: What signal should be connected to VDMA to mm2_cfync?

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You should put the MM2S side in free-run mode in most cases (thus no fsync connection will be required). Timing will be derived from downstream VTC/AXIS2VideoOut cores.
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Observer ain0102
Observer
1,065 Views
Registered: ‎02-06-2018

Re: What signal should be connected to VDMA to mm2_cfync?

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Both the write channel and read channel have entered the free run mode.

How do I synchronize the writing channel with the reading channel?

vdma1.png
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Xilinx Employee
Xilinx Employee
1,165 Views
Registered: ‎08-02-2011

Re: What signal should be connected to VDMA to mm2_cfync?

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You Should put the S2MM channel in 'TUSER" mode for fsync.

Synchronization between read and write sides happens via the genlock mechanism.
www.xilinx.com
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Moderator
Moderator
924 Views
Registered: ‎11-09-2015

Re: What signal should be connected to VDMA to mm2_cfync?

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Hi @ain0102,

 

Do you have any updates on this?

 

If  everything clear for you on this subject, please kindly close the topic by marking one reply as accepted solution.

 

Thanks and Regards,


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