DS90UB954-Q1: How to use CSI_TEST_CTL register?

Nao

Genius 4905 points

Part Number: DS90UB954-Q1

Hi, E2E members,

I would like to do the test of CSI signal on DS90UB954-EVM that using CSI_TEST_CTL register.

1. Can we do the CSI output signal checks with DS90UB954-EVM only?
2. Please tell us how to use CSI_TEST_CTL register?

Regards,
Nao

over 7 years ago

0 Steven(Shenzhen) Shi over 7 years ago

TI__Mastermind 30515 points

1. yes, you can. for accurate signal test, you should use the matching network based on "csi2 compliance spec.", instrument vendor can provide it.

2 pls refer to d/s page83 on the csi_test_ctl reg.,the 0x38[3:0] can be referred.

regards,

Steven

0 Nao over 7 years ago in reply to Steven(Shenzhen) Shi

Genius 4905 points

Hi, Steven

Thank you for your reply.

Here is my understanding about setting of "TEST MODE".
For Test mode : Set CSI_TEST_CTL [CSI_TEST_MODE] to "0001-1000" and CSI_CTL [CSI_ENABLE] "1"
Is my understanding correct?

Regards,
Nao

0 Nao over 7 years ago in reply to Nao

Genius 4905 points

Hi, Steven

Could you please send me feedback ?
Please let me know, if we need other register setting.

Regards,
Nao

0 Nao over 7 years ago in reply to Nao

Genius 4905 points

Can I have your reply?

Regards,
Nao

0 Steven(Shenzhen) Shi over 7 years ago in reply to Nao

TI__Mastermind 30515 points

Nao, the csi_test_ctl is more for chip level test. I don't think you need it more.
if you need test the CSI2 electrical spec., you can check the MIPI compliance test spec.

regards,
Steven

0 Nao over 7 years ago in reply to Steven(Shenzhen) Shi

Genius 4905 points

Hi, Steven

Thank you for your feedback.

Regards,
Nao

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DS90UB954-Q1: How to use CSI_TEST_CTL register?