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Explorer
Explorer
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Registered: ‎05-03-2018

Supported Resolutions for the Display Port RX subsystem 2.1 for Kintex-7

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Dear all,
Does the Display Port RX subsystem 2.1 for Kintex-7 (speed grade -2),

 

is able to support a single stream with 3200x1200 pixel frames at 120 fps?

 

Thanks in advance,
Andrea

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Teacher
Teacher
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Registered: ‎06-16-2013

Hi @andreac_avnet

 

As @florentw already mentioned before, DP Rx can have capability for "3200x1200 pixel frames at 120fps".

However, if you consider compatibility, I suggest to follow VESA CVT formula.

 

I guess, what you want to do is different, but I suggest it.

 

Best regards,

View solution in original post

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Moderator
Moderator
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Registered: ‎11-09-2015

HI @andreac_avnet,

 

The Displayport RX subsystem should be able to support any resolution sent by a DP1.2 compliant source.

 

Basically, I can support resolutions which are in the DP1.2 bandwidth. You can check as follow:

 

The maximum lane rate for DP1.2 is 5.4 Gbps. As you can have up to 4 lanes, the maximum bandwidth is 21.6Gbps. As the data is 8b/10b encoded, the maximum data rate (or effective bandwidth) for DP1.2 is 17.28Gbps.

 

The data rate is computed as follow:

Total Horizontal Pixels * Total Vertical Lines * Refresh Rate * Component * Bits per component

 

Example with 3200*1200 assuming you are using reduced blanking in RGB (3 components), 8 bits per component:

Total Horizontal Pixels = 3280 (3200 active + 80 blanking)

Total Vertical Lines = 1271 (1200 active + 71 blanking)

 

Data rate = 3280 * 1271 * 120 * 3 * 8 = 12.006Gbps which is under the DP1.2 maximum bandwidth.

 

Thus the IP should be able to receive this resolution.

 

Hope that helps,

 

Regards,


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Teacher
Teacher
861 Views
Registered: ‎06-16-2013

Hi @andreac_avnet

 

As @florentw already mentioned before, DP Rx can have capability for "3200x1200 pixel frames at 120fps".

However, if you consider compatibility, I suggest to follow VESA CVT formula.

 

I guess, what you want to do is different, but I suggest it.

 

Best regards,

View solution in original post

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