ASAHI KASEI
[AK4555]
PIN/FUNCTION
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
VCOM
AINR
AINL
VSS
VDD
DEM0
DEM1
SDTO
SDTI
LRCK
MCLK
SCLK
PWADN
PWDAN
AOUTL
AOUTR
I/O
O
I
I
-
-
I
I
O
I
I
I
I
I
I
O
O
Function
Common Voltage Output Pin, 0.5 x VDD
Rch Analog Input Pin
Lch Analog Input Pin
Ground Pin
Power Supply Pin
De-emphasis Control Pin
De-emphasis Control Pin
Audio Serial Data Output Pin
Audio Serial Data Input Pin
Input/Output Channel Clock Pin
Master Clock Input Pin
Audio Serial Data Clock Pin
ADC Power-Down & Reset Mode Pin
“L”: Power down. ADC should always be reset upon power-up.
DAC Power-Down & Reset Mode Pin
“L”: Power down. DAC should always be reset upon power-up.
Lch Analog Output Pin
Rch Analog Output Pin
Note: All input pins except analog input pins (AINR and AINL) should not be left floating.
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Digital
Pin Name
AINR, AINL, AOUTL, AOUTR
SDTO
SDTI
Setting
These pins should be open.
This pin should be open.
This pin should be connected to VSS.
MS0363-E-01
-3-
2005/08
AKM [ ASAHI KASEI MICROSYSTEMS ]
