TAS5713_101 Datasheet, PDF (38/65 Pages) Texas Instruments – 25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC

TAS5713
SLOS637 – DECEMBER 2009
www.ti.com
Shutdown Sequence
Enter:
1. Write 0x40 to register 0x05.
2. Wait at least 1 ms + 1.3 × t_stop (where t_stop is specified by register 0x1A).
3. If desired, reconfigure by returning to step 4 of initialization sequence.
Exit:
1. Write 0x00 to register 0x05 (exit shutdown command may not be serviced for as much as 240 ms
after trim following AVDD/DVDD powerup ramp).
2. Wait at least 1 ms + 1.3 × t_start (where t_start is specified by register 0x1A).
3. Proceed with normal operation.
Power-Down Sequence
Use the following sequence to powerdown the device and its supplies:
1. If time permits, enter shutdown (sequence defined above); else, in case of sudden power loss,
assert PDN = 0 and wait at least 2 ms.
2. Assert RESET = 0.
3. 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.
4. 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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