TPS659039-Q1: TPS659039-Q1 Application Problem

Fery Feng

Part Number: TPS659039-Q1
Other Parts Discussed in Thread: TDA2SG

Hi team,

Customer is using TPS659039-Q1 to powering TDA2SG, with OTP version of 0X87, and they got below problem, please help on it.

1. the power on and power off sequence/requirement of RPWRON/ PWRON/ PWRDOWN/ RESETIN/ RESET_OUT signal? And do we have materials to introduce these signal?

2. Is LONG_PRESS_KEY.LPK_TIME bits setting by below LONG_PRESS_KEY bit?

Thanks.

over 6 years ago

0 Krishnamurthy Hegde over 6 years ago

TI__Expert 8730 points

Hi,

I have forwarded your request to our applications engineer supporting this device. Due to US holidays this week, she is out of office and she will provide the feedback early next week.

Thanks,

Murthy

0 Kevin LaRosa over 6 years ago in reply to Krishnamurthy Hegde

TI__Genius 17380 points

Hi Fery,

The 0x87 OTP is defined in the TPS659039-Q1 User’s Guide to Power DRA74x, DRA75x, TDA2x, and AM572x (Rev. C). Figure 4 has a good outline of the recommended connections for the digital pins.

Regarding LPK, I don't understand the question. LONG_PRESS_KEY.LPK_TIME determines the time that PWRON needs to be held low to initiate a reset. It starts at 12 s but can be changed.

If more detail is needed, expert should be able to help further next week.

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TPS659039-Q1: TPS659039-Q1 Application Problem