AK7744VT Datasheet, PDF (24/50 Pages) Asahi Kasei Microsystems – 24bit 3ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7744]
2-4) CONT3: ADC control
Command Code
Write Read
6Ch 7Ch
Name
CONT3
D7
D6
D5
D4
D3
D2
ISEL2 ISEL1[2] ISEL1[1] ISEL1[0] PSAD2 PSAD1
D1
TEST
D0
Default
X
00h
c D7: ISEL2 ADC2 Analog input selector setting
0:A2IN-,A2IN+
1:A2IN1
d D6,D5,D4:ISEL1[2:0] ADC1 Analog input selector setting
ISEL1[2](D6)
ISEL1[1](D5)
ISEL1[0](D4) Analog input pin
0
0
0
AINL-,AINL+,AINR-,AINR+
0
0
1
AINL1,AINR1
0
1
0
AINL2,AINR2
0
1
1
AINL3,AINR3
1
0
0
AINL4,AINR4
1
0
1
AINL5,AINR5
e D3:PSAD2 ADC2 power save
0:Normal operation
1:ADC2 power save
In the case of not using ADC2, set this value to “1” and ADC2 will be in RESET.
This is useful for reducing power consumption.
The digital output signals of ADC2 will 00000h.
When changing to normal operation, set this value to “0” at system reset.
f D2:PSAD1 ADC1 power save
0:Normal operation
1:ADC1 power save
In the case of not using ADC1, set this value to “1” and ADC1 will be in RESET.
This is useful for reducing power consumption.
The digital output signals of ADC1 will 00000h.
When changing to normal operation, set this value to “0” at system reset.
g D1:TEST
0:Normal operation
1:TESTmode (Do NOT use this mode )
h D0: Always input 0
Note) Un Underlined settings of c~g = default setting.
<MS0167-E-00>
- 24 -
2002/10