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[AK4675]
MS0963-E-00
2008/05
- 173 -
Addr
Register
Name
D7 D6 D5 D4 D3 D2 D1 D0
10H
ALCA Mode Control 2
0
0
0
ZTMA1
ZTMA0
WTMA2 WTMA1
WTMA0
R/W
RD RD RD R/W R/W R/W R/W R/W
Default
0 0 0 0 1 1 0 1
WTMA2-0: ALCA Recovery Waiting Period
Default: “101”, typ. 524.8ms (@OSCN bit = “0”) (
ZTMA1-0: ALCA Zero Crossing Timeout Period
Default: “01”, typ. 32.8ms (@ OSCN bit = “0”) (
)
Addr
Register
Name
D7 D6 D5 D4 D3 D2 D1 D0
11H
ALCA Mode Control 3
0
ALCA
ZELMNA
LMATA1
LMATA0
RGAINA1 RGAINA0
LMTHA
R/W
RD R/W R/W R/W R/W R/W R/W R/W
Default
0 0 0 0 0 0 0 0
LMTHA: ALC Limiter Detection Level / Recovery Waiting Counter Reset Level
Default: “0” (
RGAINA1-0: ALCA Recovery GAIN Step
Default: “00”; 1 step (
)
LMATA1-0: ALCA Limiter ATT Step
Default: “00”; 1 step (
)
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
D7 D6 D5 D4 D3 D2 D1 D0
12H
Mode Control 2
0
0
0 0 0
BATCPU
MSEL OSCN
R/W
RD RD RD RD RD R/W R/W
R/W
Default
0 0 0 0 0 0 0 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