TAS5731MPHPR datasheet(40/68 Pages) TI1

40 / 68 page

TAS5731M

SLOS838B – JULY 2013 – REVISED NOVEMBER 2013

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Shutdown Sequence

Enter:

Write 0x40 to register 0x05.

Wait at least 1 ms + 1.3 × tstop (where tstop is specified by register 0x1A).

If desired, reconfigure by returning to step 4 of initialization sequence.

Exit:

Write 0x00 to register 0x05 (exit shutdown command may not be serviced for as much as 240 ms

after trim following AVDD/DVDD power-up ramp).

Wait at least 1 ms + 1.3 × tstart (where tstart is specified by register 0x1A).

Proceed with normal operation.

Power-Down Sequence

Use the following sequence to power down the device and its supplies:

If time permits, enter shutdown (sequence defined above); else, in case of sudden power loss,

assert PDN = 0 and wait at least 2 ms.

Assert RESET = 0.

Drive digital inputs low and ramp down PVDD supply as follows:

•

Drive all digital inputs low after RESET has been low for at least 2 µs.

•

Ramp down PVDD while ensuring that it remains above 8 V until RESET has been low for at

least 2 µs.

Ramp down AVDD/DVDD while ensuring that it remains above 3 V until PVDD is below 6 V and

that it is never more than 2.5 V below the digital inputs.

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TAS5731MPHPR 데이터시트(PDF) 40 Page - Texas Instruments