AK7740ET Datasheet, PDF (22/48 Pages) Asahi Kasei Microsystems – 24bit 2ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7740ET]
2-3) CONT2 : DAC ,DSP control
Command Name D7
D6
D5
D4
D3
D2
D1
D0
Code
Write Read
68h 78h CONT2 SW2
SW1
SW0 PSDA2 PSDA1 TESTT TEST
X
c D7,D6,D5: SW2, SW1, SW0 internal path setting
SW2(D7) SW1(D6) SW0(D5)
0
0
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.
Defaul
t
00h
<Pre-E-01>
- 22 -
2006/10