TPS6594-Q1: Page1 register access

Zhihua Ding

Part Number: TPS6594-Q1

Hi, TI

I meet a problem, I want to enable CRC of I2C1 in register 0x11a, but failed. Could you give me the guide how to change it? I confirm that register is not lock (0xA1 is 0)

Thank you!

BRs

Ding Zhihua

over 1 year ago

0 Nicholas McNamara over 1 year ago

TI__Mastermind 20409 points

Hello Zhihua,

Can you give me your part number for the TPS6594, I can further help you, but I assume this is J7 EVM correct?

If you could provide more details I could see about providing you an easier solution than unlocking the NVM.

BR,

Nicholas

0 Nicholas McNamara over 1 year ago in reply to Nicholas McNamara

TI__Mastermind 20409 points

I assume it's one of the many solutions that we provide for the J7

Please run this command for the I2C_2 field bit in the 0x85 (FSM_I2C_TRIGGERS) register.

i2cset -y -f 0x48 0x85 4

This should do it, please let me know if it doesn't work out for you.

BR,

Nicholas

0 Zhihua Ding over 1 year ago in reply to Nicholas McNamara

Intellectual 460 points

Hi Nicholas

Thank you for your suggestion.

The part number is TPS65941212RWERQ1, I tried to unlock the user EE program by writting 0x98 0xb8 0x13 0x7d to register A2, and it works.

However, I will try your method.

Thanks!

Zhihua

0 Nicholas McNamara over 1 year ago in reply to Zhihua Ding

TI__Mastermind 20409 points

Hello Zhihua,

yes I tried that method as well, while it does work we prefer that the I2C_2 bit be set instead as it doesn't unlock the other sensitive registers.

I'm glad that it's worked out!

BR,

Nicholas

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TPS6594-Q1: Page1 register access