AK7744VT Datasheet, PDF (6/50 Pages) Asahi Kasei Microsystems – 24bit 3ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7744]
Pin No.
22
Pin name
SDIN
I/O
Function
DSP Serial data input pin
( Pulldown)
I Compatible with MSB/LSB justified 24, 20 and 16 bits.
Classification
Digital section
Serial input data
DSP Serial data input pin
( Pulldown)
23
SDINA1 I Compatible with MSB/LSB justified 24, 20 and 16 bits.
Allows the selectable input to SDINA1 port of DSP or DAC1 by control
register setting
DSP Serial data input pin
( Pulldown)
24
SDINA2 I Compatible with MSB/LSB justified 24, 20 and 16 bits.
Allows the selectable input to SDINA2 port of DSP or DAC2 by control
register setting
25
DVSS
- Ground pin for digital section
Power supply
26
DVDD
- Power supply pin for digital section 3.3V(Typ).
27 SDOUTA1 O DSP Serial data output pin.
Digital section
Normally “L” outputs. Allows outputs MSB justified 24-bit data from Serial output data
ADC1 by control register setting.
28 SDOUTA2 O DSP Serial data output pin.
Normally “L” outputs. Allows outputs MSB justified 24-bit data from
ADC2 by control register setting.
29
SDOUT O DSP Serial data output pin.
Outputs MSB justified 24-bit data.
30 SDOUTD1 O DSP Serial data output pin.
Normally “L” outputs. Allows outputs MSB justified 24-bit data to DAC
1 by control register setting.
31 SDOUTD2 O DSP Serial data output pin.
Normally “L” outputs. Allows outputs MSB justified 24-bit data to DAC
2 by control register setting.
32
DRDY O Output data ready pin for Microcomputer interface.
Microcomputer
33
RDY
O Data write ready output pin for Microcomputer interface.
Interface
34
SO
O Serial data output pin for Microcomputer interfaces.
Microcomputer interface serial data input and serial data
35
SI
I output control pin.
When SI does not use, leave SI=”L”.
Microcomputer interface serial data clock pin.
36
SCLK
I When SCLK does not use, leave SCLK=”H”.
RQ
Microcomputer interface writes request pin.
37
I _{RQ =”L”: Microcomputer interface enable.}
38
DVDD
- Power supply pin for digital section 3.3V(Typ).
39
DVSS
- Ground pin for digital section
40
BVSS
- Silicon substrate potential 0V
Power supply
Power supply
<MS0167-E-00>
-6-
2002/10