DS90UB940-Q1: DS90ub940 get resolution

ieio

Part Number: DS90UB940-Q1

Hi,

in DS90UB940 manual I found the following:

8.4.4 Input Display Timing
The DS90UB940-Q1 has built−in support to detect the incoming video format extracted from the FPD-Link III
datastream(s) and automatically generate CSI-2 output timing parameters accordingly. The input video format
detection is derived from progressive display resolutions based on the CEA−861D specification. The video data
rate and frame rate is determined by measuring internal VS and DE signals.

I am wondering if I can get video data and frame rate somewhere in the registers.

Thanks in advance for the help.

over 6 years ago

0 Jiashow Ho over 6 years ago

TI__Genius 11340 points

Hi ieio,

We do not; however, you can calculate your CSI-2 clock based on your input. You can refer to section 8.4 of the datasheet:

Best,

Jiashow

0 ieio over 6 years ago in reply to Jiashow Ho

Prodigy 80 points

Hi Jiashow,
many thanks for your answer.
If I well understood I must know the input resolution a priori and if it is not the case I must configure the CSI-2 clock and declare the device compatible to specific resolutions. Am I right or am I missing something?
Regards.

0 Jiashow Ho over 6 years ago in reply to ieio

TI__Genius 11340 points

Hi ieio,

Yes. Your CSI-2 clock is dependent on your input resolution, so in order to compute your CSI clock you would need to know your input resolution.

Best,
Jiashow

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DS90UB940-Q1: DS90ub940 get resolution