DS90UB941AS-Q1: single DSI input port selection

user5152107

Part Number: DS90UB941AS-Q1
Other Parts Discussed in Thread: DS90UB940-Q1

Hi Team

I want to use DS90UB941AS-Q1 as display serializer in my system. Is it possible to just use DS90UB941AS-Q1 MIPI DSI1 port as video stream input from SOC? Is there any limitation for my solution?

I checked the Datasheet of DS90UB941AS-Q1, it seems I just need configure DSI_PORT_SEL in BRIDGE_CTL Register Field to select whitch port I want to use.

over 4 years ago

0 Michael.Walker over 4 years ago

TI__Mastermind 19720 points

Hi,

There should not be any limitation on using DSI1 rather than DSI0. You are correct in what you need to configure the DSI properly.

Regards,

Michael W.

0 user5152107 over 4 years ago in reply to Michael.Walker

Prodigy 50 points

Hi, Michael

Thanks!

Another question need your kindly reply. Below toplogy shows our 360 soround view solution. Camera video stream will be resend from ADS UNIT to IVI UNIT by DS90UB941AS-Q1, receiver in IVI UNIT is DS90UB940-Q1, can DS90UB940-Q1 work with DS90UB941AS-Q1 as they both refer to FPD-LINK III protocol?

bandwith(data only): 1920*1080@30fps*4CH*YUV420 is about 2.98Gbps.

regards,

Jinju Ma

0 Michael.Walker over 4 years ago in reply to user5152107

TI__Mastermind 19720 points

Hi Jinju,

The 940 will work with the 941AS, your system looks fine. What is the resolution sent into the 941AS?

Regards,

Michael W.

0 user5152107 over 4 years ago in reply to Michael.Walker

Prodigy 50 points

Hi, Michael

Resolution is 3840*2160@30fps, YUV420 format.

regards,

Jinju Ma

0 Michael.Walker over 4 years ago in reply to user5152107

TI__Mastermind 19720 points

Hi Jinju,

Are you trying to use YUV420 on the DSI or is this the output of the 940?

Regards,

Michael W.

0 user5152107 over 4 years ago in reply to Michael.Walker

Prodigy 50 points

Hi, Michael

Data format in the topology as below:

ADS SOC(YUV420) ---> ADS 941(YUV420) ---> IVI 940(YUV420) ---> IVI SOC(YUV420)

0 Michael.Walker over 4 years ago in reply to user5152107

TI__Mastermind 19720 points

Hi,

YUV420 does not exist in DSI. You can input RGB888 into the 941AS and have the 940 convert it into YUV420

Regards,

Michael W.

0 user5152107 over 4 years ago in reply to Michael.Walker

Prodigy 50 points

You are right Michael, RGB and YCbCr are in DSI.

Thanks,

Jinju Ma

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DS90UB941AS-Q1: single DSI input port selection