
[AK4683] 
MS0427-E-02 
2007/04 
- 69 - 
Addr 
05H 
Register Name 
Clock Select 4 
Default 
D7 
0 
0 
D6 
XTL1 
0 
D5 
XTL0 
0 
D4 
D3 
D2 
D1 
D0 
MSB 
0 
CKSDT
0 
CKSB2
0 
CKSB1 
1 
CKSB0 
0 
MSB: Master/Slave control for input data of PORTB. 
Refer Table 17. 
CKSB2-0: Clock control for PORTB. 
Refer Table 14. 
CKSDT: Clock control for DIT. 
Refer Table 57. 
XTL1-0: X’tal Frequency control 
00: 11.2896MHz  (default) 
01: 12.288MHz 
10: 24.576MHz 
11: (channel status) 
Register Name 
Sampling Speed 
Default 
Addr 
06H 
D7 
0 
0 
D6 
D5 
D4 
D3 
0 
0 
D2 
D1 
D0 
ACKSAI 
0 
ACKSAO
0 
ACKSB
0 
DFSAD 
0 
DFSDA1 
0 
DFSDA0
0 
DFSDA1-0: DAC sampling speed control 
These settings are ignored in Auto Setting Mode. Refer Table 22. 
DFSAD: ADC sampling speed control 
This setting is ignored in Auto Setting Mode. Refer Table 21. 
ACSKB: Auto Setting Mode of PORTB 
0: Disable, Manual Setting Mode  (default) 
1: Enable, Auto Setting Mode 
Master clock frequency is detected automatically at ACKSB bit “1”. In this case, the setting of 
DFSAD, DFSDA1-0 bits of the block connecting this PORT is ignored. When this bit is “0”, 
DFSAD, DFSDA1-0 bits set the sampling speed mode. 
ACSKAO: Auto Setting Mode of PORTA Output 
0: Disable, Manual Setting Mode  (default) 
1: Enable, Auto Setting Mode 
Master clock frequency is detected automatically at ACKSAO bit “1”. In this case, the setting of 
DFSAD, DFSDA1-0 bits of the block connecting this PORT is ignored. When this bit is “0”, 
DFSAD, DFSDA1-0 bits set the sampling speed mode. 
ACSKAI: Auto Setting Mode of PORTA Input 
0: Disable, Manual Setting Mode  (default) 
1: Enable, Auto Setting Mode 
Master clock frequency is detected automatically at ACKSAI bit “1”. In this case, the setting of 
DFSAD, DFSDA1-0 bits of the block connecting this PORT is ignored. When this bit is “0”, 
DFSAD, DFSDA1-0 bits set the sampling speed mode.