ASAHI KASEI
[AK4532]
D1
OPERATION OVERVIW
1. CONTROL REGISTER MAP
Addr Register Name
D7
D6
D5
D4
D3
D2
D0
00
01
02
03
08
09
0A
0B
10
11
12
13
14
15
16
19
Master Volume Lch
Master Volume Rch
Voice Volume Lch
Voice Volume Rch
Line Volume Lch
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
ATT4
ATT4
GAI4
GAI4
GAI4
GAI4
GAI4
GAI4
LineL
ATT3
ATT3
GAI3
GAI3
GAI3
GAI3
GAI3
GAI3
LineR
ATT2
ATT2
GAI2
GAI2
GAI2
GAI2
GAI2
GAI2
ATT1 ATT0
ATT1 ATT0
GAI1
GAI1
GAI1
GAI1
GAI1
GAI1
GAI0
GAI0
GAI0
GAI0
GAI0
GAI0
MIC
Line Volume Rch
AUX Volume Lch
AUX Volume Rch
Output Mixer SW 1
Output Mixer SW 2
Lch Input Mixer SW 1
Rch Input Mixer SW 1
Lch Input Mixer SW 2
Rch Input Mixer SW 2
Reset and Power Down
MIC Amp Gain
AUXL AUXR VoiceL VoiceR
LineL
LineL
AUXL
AUXL
LineR
LineR
AUXR VoiceL
AUXR VoiceR
PD
RST
MGAIN
Note: ATT* is data bits for the attenuation level.
GAI* is data bits for the gain level.
IMPORTANT: There is the compatibility between the AK4531 and AK4532. But the input mixer
functions of those device has some different implication in the application, receptively.
And the other address of control register except those described in the above table and “1A” are
“do not care”. Address “1A” for testing shall be strictly prohibited to access.
Be ware that the three MSB address bits(A7, A6, A5) are ignored by AK4532. Writing to address
“20” register will update the address “00” register for instance.
2. WRITE Timing of Control Register
CS
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
CCLK
CDATA
A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
A7-A0: Address
D7-D0: Control Data
3. Control Register Definitions
Addr
00
01
Register Name
Master Volume Lch
Master Volume Rch
D7
MUTE
MUTE
D6
D5
D4
ATT4
ATT4
D3
ATT3
ATT3
D2
ATT2
ATT2
D1
ATT1
ATT1
D0
ATT0
ATT0
MUTE
1:
0:
MUTE
No MUTE
32 levels with 2 dB step
ATT4:0
00000: 0dB
11111: -62 dB
“0000 0000”(No MUTE & 0dB)
Initial
0178-E-01
10
1999/06
AKM [ ASAHI KASEI MICROSYSTEMS ]
