[AK4675]
Addr Register Name
10H ALCA Mode Control 2
D7
0
D6
0
D5
0
D4
D3
D2
WTMA2
D1
WTMA1
D0
WTMA0
ZTMA1 ZTMA0
R/W
Default
RD
0
RD
0
RD
0
R/W
0
R/W
1
R/W
1
R/W
0
R/W
1
WTMA2-0: ALCA Recovery Waiting Period
Default: “101”, typ. 524.8ms (@OSCN bit = “0”) (Table 85)
ZTMA1-0: ALCA Zero Crossing Timeout Period
Default: “01”, typ. 32.8ms (@ OSCN bit = “0”) (Table 84)
Addr Register Name
11H ALCA Mode Control 3
D7
0
RD
0
D6
ALCA
R/W
0
D5
ZELMNA
D4
D3
D2
RGAINA1
D1
RGAINA0
D0
LMTHA
R/W
0
LMATA1 LMATA0
R/W
Default
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
LMTHA: ALC Limiter Detection Level / Recovery Waiting Counter Reset Level
Default: “0” (Table 82)
RGAINA1-0: ALCA Recovery GAIN Step
Default: “00”; 1 step (Table 86)
LMATA1-0: ALCA Limiter ATT Step
Default: “00”; 1 step (Table 83)
ZELMNA: Zero Crossing Detection Enable at ALCA Limiter Operation
0: Enable (default)
1: Disable
ALCA: ALCA Enable
0: ALCA Disable (default)
1: ALCA Enable
When ALC bit is set to “1”, the ALCA operation is enabled. The initial value is “0” (Disable).
Addr Register Name
12H Mode Control 2
R/W
D7
0
D6
0
D5
0
RD
0
D4
0
RD
0
D3
0
RD
0
D2
BATCPU
R/W
D1
MSEL
R/W
0
D0
OSCN
R/W
0
RD
0
RD
0
Default
0
OSCN: Internal Oscillator / External Clock Select
0: Internal Oscillator (default)
1: External Clock (MCKIA pin)
MSEL: MCKIA Input Frequency Select
0: 2.048MHz (default)
1: 2.8224MHz or 3.072MHz
BATCPU: Battery Monitor Circuit Enable
0: Disable (default)
1: Enable
MS0963-E-00
2008/05
- 173 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
