AK4679EG Datasheet, PDF (120/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
■ Thermal Shutdown Function
When PMVCM bit is “1” and the internal device temperature rises up irregularly (E.g. Output pins of speaker amplifier
are shortened.), all amplifier blocks are automatically powered-down (PMLO, PMRO, PMRCV, PMHPL, PMHPR and
PMSPK bits = “0”) and then THDET bit becomes “1”. The other control registers are not initialized. When the internal
device temperature falls down, THDET bit becomes “0”, but the amplifier blocks do not return to normal operation unless
the amplifier blocks are powered-up (PMLO, PMRO, PMRCV, PMHPL, PMHPR or PMSPK bits = “1”). The device
status can be monitored by THDET bit.
MS1402-E-06
- 120 -
2013/02