Why "AMMU.configureAmmu = false" in TDA3x?

Wilson Choi

Intellectual 1595 points

Hello,

From vision sdk 2.08, AMMU.configurAmmu in tda3xx/pu1_0/ammu1._bios.cgf is false.

Why did this become false?

And if AMMU is not set by cfg, who is setting AMMU for TDA3x?

Best regards,

Wilson.

over 9 years ago

0 Rishabh Garg over 9 years ago

TI__Guru 55685 points

Hi Wilson,

AMMU is now being set by SBL for TDA3xx.

Before VSDK 2.08 release SBL was disabling the AMMU configuration before jumping to M4-1/M4-0 application.

SBL starts M4-1 application early when optimization level is high to provide quick CAN response.

Hence to prevent any conflicts AMMU is done by SBL.

Regards,

Rishabh

0 Wilson Choi over 9 years ago in reply to Rishabh Garg

TI__Intellectual 1595 points

Rishabh,

Thanks very much. It's clear now. SBL and GEL script.

It's another question. Do you have minimum CAN response time from boot or RTC only mode?

Best regards,

Wilson

0 Rishabh Garg over 9 years ago in reply to Wilson Choi

TI__Guru 55685 points

Wilson,

The CAN response time depends on the size of CAN application image and CAN initialization time.
I have not measured it but as per our estimate it should be around 75-100 ms.

Regards,
Rishabh

0 Wilson Choi over 9 years ago in reply to Rishabh Garg

TI__Intellectual 1595 points

Thanks Rishabh,

Best regards,

Wilson.

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Why "AMMU.configureAmmu = false" in TDA3x?