[AK4679]
HPTM1
bit
HPTM0
bit
Zero Crossing Timeout Period
8kHz
16kHz
8ms
44.1kHz
2.9ms
5.8ms
0
0
1
1
0
1
0
1
128/fs
256/fs
512/fs
1024/fs
16ms
32ms
64ms
128ms
(default)
16ms
32ms
64ms
11.6ms
23.2ms
Table 107. Headphone-Amp Volume Zero Crossing Timeout Period
CPMODE1 bit
CPMODE0 bit
Mode
Operation Voltage
0
0
1
1
0
1
0
1
Class-G Operation Mode
± VDD Operation Mode
±1/2 VDD Operation Mode
N/A
Automatic Switching (default)
± VDD
±1/2 VDD
Table 108. Charge Pump Mode Setting (N/A: Not available)
VDDTM2 VDDTM1 VDDTM0 VDD Mode Holding Period
bit
0
0
0
0
1
1
1
bit
0
0
1
1
0
0
1
bit
0
1
0
1
0
1
0
8kHz
128ms
256ms
16kHz
64ms
44.1kHz
1024/fs
2048/fs
4096/fs
8192/fs
16384/fs
32768/fs
65536/fs
23.2ms
46.4ms
92.9ms
186ms
372ms
743ms
1486ms
128ms
256ms
512ms
1024ms
2048ms
4096ms
512ms
1024ms
2048ms
4096ms
8192ms
(default)
1
1
1
N/A
Table 109. VDD Mode Waiting Period (N/A: Not available)
MS1402-E-06
2013/02
- 117 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
