DS90UB940-Q1: When 940 de-assert LOCk when input video format is changed

user4779049

Part Number: DS90UB940-Q1

Hi Team,

Please advise me on questions bellow.
This question is related to item on E2E.
https://e2e.ti.com/support/interface/high_speed_interface/f/138/p/630862/2330516#2330516

I have confirmed that DS90UB940 is designed when video format is changed
it de-asserts LOCK.

Q1. When DS90UB940 de-asserts Lock?
Does it de-asserts LOCK immediately it receives new Sync signal, or at the end of frame?

Q2. Does it outputs EOF (end of frame) packet when it de-asserts LOCK or it terminates
transaction without EOF?

Mita

over 7 years ago

0 Palaniappan Manickam over 7 years ago

TI__Genius 10475 points

Hello,
This thread has been assigned for review and response.

0 user4779049 over 7 years ago in reply to Palaniappan Manickam

Expert 2345 points

Please allow me to add two more questions.

Q3. How much sync timing error in horizontal and vertical domain, does MIPI formatter
in DS90UB940 decide un-lock?

Q3. Does the error tolerance depends on input video format?

Mita

Interface

Interface forum

DS90UB940-Q1: When 940 de-assert LOCk when input video format is changed