
ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 7 -
No. Pin Name
I/O
Function
J9
NC
-
No Connect.
No internal bonding. This pin should be left floating.
Digital Ground Pin
X’tal Output Pin
X’tal Input Pin
External Master Clock Input Pin
Master / Slave Mode Pin
“H” : Master Mode, “L” : Slave Mode
Speaker Amp Positive Output Pin
Speaker Amp Positive Output Pin
Speaker Amp Negative Output Pin
Speaker Amp Negative Output Pin
Headphone/Speaker Amp Power Supply Pin
Headphone/Speaker Amp Power Supply Pin
Headphone/Speaker Amp Ground Pin
Headphone/Speaker Amp Ground Pin
Rch Headphone Amp Output Pin
No Connect.
No internal bonding. This pin should be left floating.
Lch Headphone Amp Output Pin
Mute Time Constant Control Pin
Connected to HVSS pin with a capacitor for mute time constant.
No Connect.
No internal bonding. This pin should be left floating.
ALC2 Input Pin
Analog Mixing Output Pin
Mono Line Negative Output Pin
Mono Line Positive Output Pin
Mono AUX Negative Input Pin
Mono AUX Positive Input Pin
Mono Beep Signal Input Pin
Rch Stereo Beep Signal Input Pin
Lch Stereo Beep Signal Input Pin
Analog Input Pin
Microphone Analog Output Pin
No Connect.
No internal bonding. This pin should be left floating.
J8
G8 XTO
DVSS
-
O
I
I
XTI
MCKI
H9
G9 M/S
I
F8
F9
E8
E9
D8 HVDD
D9 HVDD
C8
HVSS
C9
HVSS
B9
HPR
SPP
SPP
SPN
SPN
O
O
O
O
-
-
-
-
O
A9 NC
-
A8 HPL
O
B8
MUTET
O
B7
NC
-
A7 MIN
A6 MOUT2
B6
MOUT
A5 MOUT+
B5
AUXIN
B4
AUXIN+
A4 BEEPM
B3
BEEPR
A3 BEEPL
B2
AIN
A2 MICOUT
I
O
O
O
I
I
I
I
I
I
O
C3
NC
-
Note: All input pins except analog input pins (INT, EXT, AIN, MIN, AUXIN+, AUXIN
, BEEPM, BEEPL, and
BEEPR) should not be left floating.
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Pin Name
EXT, INT, MIN, AUXIN
, AUXIN+, BEEPM,
BEEPR, BEEPL, AIN
MICOUT, MPE, MPI, VCOC, SPP, SPN, HPR, HPL,
MUTET, MOUT2, MOUT
, MOUT+
CAD0, CSN, CCLK, CDTI, I2C, SDTI, LRCK
(when M/S pin = “L”), BICK (when M/S pin = “L”),
M/S
CDTO, SDTO, LRCK (when M/S pin = “H”), BICK
(when M/S pin = “H”), MCKO, XTO
Setting
These pins should be open and each path
should be switched off.
These pins should be open.
Analog Input
Analog Output
Digital Input
These pins should be connected to DVSS.
Digital Output
These pins should be open.