AK4637EN Datasheet, PDF (61/96 Pages) Asahi Kasei Microsystems – 24bit Mono CODEC with MIC/SPK-AMP

[AK4637]
■ Thermal Shutdown Function
When the internal temperature of the device rises up irregularly (e.g. Output pins of speaker-amp are
shortened), the speaker-amp and the lineout-amp are automatically powered down and then THDET bit
becomes “1” (thermal shutdown). When TSDSEL bit = “0” (default), the internal temperature goes down
and the thermal shutdown is released, the speaker-amp or the lineout-amp is powered up automatically
and THDET bit returns to “0”. When TSDSEL bit = “1”, these blocks will not return to a normal operation
until being reset by the PDN pin. THDET bit becomes “0” by this PDN pin reset.
015010680-E-00
- 61 -
2015/09