AK4649 Datasheet, PDF (89/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK-AMP

[AK4649]
(10) Exit the power-save-mode of Speaker-Amp: SPPSN bit = “0” → “1”
“(9)” time depends on the time constant of external resistor and capacitor connected to the MIN pin. If
Speaker-Amp output is enabled before input of MIN-Amp becomes stable, pop noise may occur.
e.g. R=33kΩ, C=0.1μF: Recommended wait time is more than 5τ = 16.5ms.
(11) Enter Speaker-Amp Power-save-mode: SPPSN bit = “1” → “0”
(12) Disable the path of “DAC → SPK-Amp”: DACS bit = “1” → “0”
(13) Power down DAC, MIN-Amp Programmable Filter and Speaker:
PMDAC = PMPFIL = PMBP = PMSPK bits = “1” → “0”
MS1023-E-01
- 89 -
2010/08