ASAHI KASEI
[AK4564]
Operation Mode
Addr Register Name
D7
D6
D5
D4
D3
D2
D1
D0
0BH Operation Mode
Default
0
0
0
0
MIX1P MONO
ALC2
1
FDIN FDOUT ALC1
0
0
0
0
0
ALC1: ALC1 Enable Flag
0: Disable (Default)
1: Enable
FDOUT: FADEOUT Enable Flag
0: Disable (Default)
1: Enable
FDIN: FADEIN Enable Flag
0: Disable (Default)
1: Enable
ALC2: ALC2 Enable Flag
0: Disable
1: Enable (Default)
After initializing cycle (2048/fs=42.7ms@fs=48kHz), ALC2 is enabled. This initializing cycle
starts when PDN pin change “L” to “H” or SPKP bit change from “0” to “1”.
MONO: MONO mode for Recoding
When the microphone and line inputs are mono, Rch output data of SDTO can be changed to Lch data.
Then Pre-Amp, MIX1-Amp, MIX2-Amp and ADC analog block of right channel are powered down.
SDTO Output Data
MONO
Mode
Lch
Lch
Lch
Rch
Rch
Lch
0
1
Stereo
Mono
Default
Table 24. SDTO Output Data
MIX1P: MIX1-Amp Power Control
MIX1P and ADC bits are Ored.
0: Power OFF (Default)
1: Power ON
MS0140-E-01
2002/07
- 44 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
