[AK4685]
PIN/FUNCTION
No. Pin Name
I/O
O
I
Function
1
2
XTO
MCB/XTI
X’tal Output Pin
ADC Master Clock Input /X’tal Input Pin
PORTB Master Mode Select Pin.
3
MSB
I
“L” (connected to the ground): Slave mode.
“H” (connected to DVDD2): Master mode.
DAC2 Input Channel Clock Pin
DAC2 Master Clock Input Pin
DAC2 Audio Serial Data Clock Pin
DAC2 Audio Serial Data Input Pin
DAC2 Digital Ground Pin, 0V
4
5
6
7
8
9
LRCKC
MCLKC
BICKC
SDTIC
VSS1
I
I
I
I
-
-
DVDD3
DAC2 Digital Power Supply Pin, 4.75V∼5.25V
10
SDA
I/O Control Data Input/Output Pin
11 SCL
I
Control Data Clock Pin
Power-Down Mode & Reset Pin
12 PDN
I
When “L”, the AK4685 is powered-down, all registers are reset. And then all digital
output pins go “L”. The AK4685 must be reset once upon power-up.
DAC1 Mute Pin
13 MT1N
14 MT2N
I
I
“H”: Normal Operation
“L”: Mute
DAC2 Mute Pin
“H”: Normal Operation
“L”: Mute
15
DVDD2
-
-
I
I
I
I
DAC1 Digital Power Supply Pin, 4.75V∼5.25V
DAC1 Digital Ground Pin, 0V
DAC1 Audio Serial Data Input Pin
DAC1 Audio Serial Data Clock Pin
DAC1 Master Clock Input Pin
16 VSS2
17 SDTIA
18 BICKA
19 MCLKA
20 LRCKA
DAC1 Input Channel Clock Pin
Analog Output Mode Select Pin.
21 SGL
I
“L” (connected to the ground): Differential mode.
“H” (connected to DVDD): Single End mode.
DAC1 Analog Power Supply Pin, 4.75V∼5.25V
DAC1 Analog Ground Pin, 0V
Rch Positive Analog Output Pin
Rch Negative Analog Output Pin
Lch Positive Analog Output Pin
Lch Negative Analog Output Pin
No internal bonding. This pin must be connected to Ground.
Positive Charge Pump Capacitor Terminal Pin
Negative Charge Pump Capacitor Terminal Pin
Charge Pump Power Supply Pin, 3.0V ~ 3.6V.
Charge Pump Ground Pin, 0V.
Charge Pump Negative Power Output Pin.
Lch Headphone-Amp Output Pin
Rch Headphone-Amp Output Pin
DAC2 Analog Power Supply Pin, 4.75V∼5.25V
DAC2 Analog Ground Pin, 0V
22 AVDD2
23 VSS3
24 ROUT+
25 ROUT-
26 LOUT+
27 LOUT-
28 NC
29 CP
30 CN
31 PVDD
32 VSS4
33 PVEE
34 HPL
-
-
O
O
O
O
-
I
I
-
-
-
O
O
-
-
O
I
I
O
O
35 HPR
36 AVDD3
37 VSS5
38 RVCOM2
39 RIN2+
40 RIN2-
41 RAMPO2
42 LAMPO2
Rch VCOM Output 2 Pin
Rch Positive Analog Input 2 Pin
Rch Negative Analog Input 2 Pin
Rch Pre-Amp Output 2 Pin
Lch Pre-Amp Output 2 Pin
MS1106-E-00
2009/08
- 4 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
