DS90UB940-Q1: MIPI CSI interface

user4779049

Part Number: DS90UB940-Q1

Hi Team,

Please advise me a question bellow.

Question: What kinds of parameters, does DS90UB940 refer when I generate Frame Start packet
on CSI-2 output.
Does it refer the HS and DE in the input stream, or video format information in EDIT?

I want to know the behavior of DS90UB940 on CSI-2 output when it receive video data other than standard
VESA format such as 1280x740 instead of 1280x720.

I appreciate your prompt feedback.

Mita

over 8 years ago

0 Palaniappan Manickam over 8 years ago

TI__Genius 10475 points

Hello,
We received your query and we are looking into it, we should have an answer soon.

0 user4779049 over 8 years ago in reply to Palaniappan Manickam

Expert 2345 points

Thank you for your feedback.

I am lookig forward to get the answer shortly.

Mita

0 Liam Keese over 8 years ago in reply to user4779049

TI__Genius 12705 points

The CSI-2 framing is based on the VS pulse in the input stream. Please refer to section 8.4.3-4 in the datasheet.

8.3.4 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.

Kind REgards,
Liam

0 user4779049 over 8 years ago in reply to Liam Keese

Expert 2345 points

Liam-san,

Thank you for the answer.

Mita

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DS90UB940-Q1: MIPI CSI interface