[ASAHI KASEI]
[AK7740ET]
2-3) CONT2 : DAC ,DSP control
Command
Code
Name
D7
D6
D5
D4
D3
D2
D1
D0
Defaul
t
Write Read
68h
78h
CONT2
SW2
SW1
SW0
PSDA2
PSDA1
TESTT
TEST
X
00h
c D7,D6,D5: SW2, SW1, SW0 internal path setting
SW2(D7)
0
SW1(D6)
0
SW0(D5)
0
Normal operation
These settings are reserved for test; set these values to “0” (refer to the block-diagram).
d D4:PSDA2 DAC2 power down control
0:Normal operation
1:DAC2 power down
If not using DAC2, set this value to “1”, and DAC2 will RESET.
When changing to normal operation, set this value to “0” at system reset.
e D3:PSDA1 DAC1 power down control
0:Normal operation
1:DAC1 power down
In the case of not using DAC1, set this value to “1” and DAC1 will be in RESET.
When changing to normal operation, set this value to “0” at system reset.
f D2:TEST
0:Normal operation
1:Test mode (Do NOT use this mode)
g D1:TEST
0:Normal operation
1:Test mode (Do NOT use this mode)
h D0: Always input 0
Note): Underlined settings for c~h indicates default.
<Pre-E-01>
- 22 -
2006/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
