AM625: the AM62 RGB LCD inquiry

Oh Sangbong

Part Number: AM625

Tool/software:

Hello.

I am trying to implement LCD with AM6252, but I have a question.

I am trying to use RGB 888 module, but I think I need to adjust Single-Ended 50 ohm or at least the length.

The custom board I have developed does not consider the existing LCD, so the space is narrow, and I tried to implement LCD with minimal modification,

but when I reviewed the previous data, it seems that EVM followed the law.

Please answer related questions.

0 Kallikuppa Sreenivasa 3 months ago

Hello Oh Sangbong

Thank you for the query.

Please help me understand the query.

Are you checking about the length matching for the DPI signals?

Regards,

Sreenivasa

0 Oh Sangbong 3 months ago in reply to Kallikuppa Sreenivasa

Hello Kallikuppa Sreenivasa

I want to know if I need the exact single ended impedance value or if I just need to match the length.

Is it okay if I just keep the length difference between CLK and RGB pins less than 1mm?

Thank you

0 Kallikuppa Sreenivasa 3 months ago in reply to Oh Sangbong

Hello Oh Sangbong

Oh Sangbong said:
I want to know if I need the exact single ended impedance value

Not sure what you meany by exact. What is the impedance you are expecting on the board.

Oh Sangbong said:
Is it okay if I just keep the length difference between CLK and RGB pins less than 1mm?

This should be Ok. Please refer below requirements.

PCB CONNECTIVITY REQUIREMENTS

TStd(Trace Mismatch Delay) Propagation delay mismatch across all traces 100 ps (max)

Regards,

Sreenivasa

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