
ASAHI KASEI
[AK4348]
MS0532-E-00
2006/07
- 3 -
PIN/FUNCTION
No.
1
Pin Name
MCLK
I/O
I
Function
Master Clock Input
An external TTL clock should be input on this pin.
Audio Serial Data Clock
DAC1 Audio Serial Data Input
L/R Clock
Reset Mode
When at “L”, the AK4348 is in reset mode.
The AK4348 must be reset once upon power-up.
Soft Mute in parallel control mode
“H”: Enable, “L”: Disable
Chip Select in serial 3-wire mode
Chip Address in serial I2C mode
Auto Setting Mode in parallel control mode
“L”: Manual Setting Mode, “H”: Auto Setting Mode
Control Data Clock in serial 3-wire control mode
Control Data Clock in serial I2C control mode
Audio Data Interface Format in parallel control mode
Control Data Input in serial 3-wire control mode
Control Data in serial I2C control mode
DAC2 Audio Serial Data Input
DAC3 Audio Serial Data Input
DAC4 Audio Serial Data Input
Audio Data Interface Format
Chip Address in serial control mode
De-emphasis Filter Enable
Digital Power Supply, +2.7
~
+3.6V
Digital Ground
μ
P I/F Mode Select in serial control mode
“L”: 3-wire Serial, “H”: I
2
C Bus
De-emphasis Filter Enable in parallel control mode
DAC4 Right Channel Analog Output
DAC4 Left Channel Analog Output
DAC3 Right Channel Analog Output
DAC3 Left Channel Analog Output
DAC2 Right Channel Analog Output
DAC2 Left Channel Analog Output
Parallel/Serial Control Mode Select (Internal pull-up pin)
“L”: Serial control mode, “H”: Parallel control mode
DAC1 Right Channel Analog Output
DAC1 Left Channel Analog Output
Common Voltage, AVDD/2
Normally connected to AVSS with a 0.1
μ
F ceramic capacitor in parallel with a
10
μ
F electrolytic cap.
Analog Ground
Analog Power Supply, +2.7
~
+3.6V
TDM I/F Format Mode in parallel control mode (Internal pull-down pin)
“L”: Normal mode, “H”: TDM 256 mode
Data Zero Input Detect in serial control mode
Data Zero Input Detect
Note: All input pins except P/S and TDM0 pins should not be left floating.
2
3
4
5
BICK
SDTI1
LRCK
RSTB
I
I
I
I
SMUTE
I
CSN
CAD0
ACKS
I
I
I
6
CCLK
SCL
DIF0
CDTI
SDA
SDTI2
SDTI3
SDTI4
DIF1
CAD1
DEM0
DVDD
DVSS
I2C
I
I
I
7
8
I/O
I
I
I
I
I
I
I
9
10
11
12
13
14
15
16
DEM1
ROUT4
LOUT4
ROUT3
LOUT3
ROUT2
LOUT2
P/S
I
O
O
O
O
O
O
I
17
18
19
20
21
22
23
24
25
26
ROUT1
LOUT1
VCOM
O
O
O
27
28
29
AVSS
AVDD
TDM0
-
-
I
DZF2
DZF1
O
O
30