ASAHI KASEI
[AK4538]
PIN/FUNCTION of 52QFN
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Pin Name
MICOUT
MDT
EXT
MPE
MPI
INT
VCOM
AVSS
AVDD
PVDD
PVSS
VCOC
NC
CAD0
PDN
CSN
CAD1
CCLK
SCL
CDTI
SDA
CDTO
I2C
SDTI
SDTO
LRCK
BICK
MCKO
NC
I/O
O
I
I
O
O
I
O
-
-
-
-
O
-
I
I
I
I
I
I
I
I/O
O
I
I
O
I/O
I/O
O
-
Function
Microphone Analog Output Pin
Microphone Detect Pin (Internal pull down by 500kΩ)
External Microphone Input Pin (Mono Input)
MIC Power Supply Pin for External Microphone
MIC Power Supply Pin for Internal Microphone
Internal Microphone Input Pin (Mono Input)
Common Voltage Output Pin, 0.45 x AVDD
Bias voltage of ADC inputs and DAC outputs.
Analog Ground Pin
Analog Power Supply Pin
PLL Power Supply Pin
PLL Ground Pin
Output Pin for Loop Filter of PLL Circuit
This pin should be connected to PVSS with one resistor and capacitor in series.
No Connect. No internal bonding.
Chip Address 0 Select Pin
Power-Down Mode Pin
“H”: Power up, “L”: Power down reset and initializes the control register.
Chip Select Pin (I2C = “L”)
Chip Address 1 Select Pin (I2C = “H”)
Control Data Clock Pin (I2C = “L”)
Control Data Clock Pin (I2C = “H”)
Control Data Input Pin (I2C = “L”)
Control Data Input Pin (I2C = “H”)
Control Data Output Pin (I2C = “L”)
Control Mode Select Pin
“H”: I
2
C Bus, “L”: 4-wire Serial
Audio Serial Data Input Pin
Audio Serial Data Output Pin
Input / Output Channel Clock Pin
Audio Serial Data Clock Pin
Master Clock Output Pin
No Connect. No internal bonding.
MS0198-E-01
-4-
2003/5
AKM [ ASAHI KASEI MICROSYSTEMS ]
