ASAHI KASEI
[AK4640]
No.
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Pin Name
NC
DVDD
DVSS
XTO
XTI
MCKI
M/S
SPP
SPN
HVDD
HVSS
HPR
HPL
MUTET
MIN
MOUT2
NC
NC
MOUT−
MOUT+
AUXIN−
AUXIN+
BEEPM
BEEPR
BEEPL
AIN
NC
I/O
-
-
-
O
I
I
I
O
O
-
-
O
O
O
I
O
-
-
O
O
I
I
I
I
I
I
-
Function
No Connect.
No internal bonding. This pin should be left floating.
Digital Power Supply Pin
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 Negative Output Pin
Headphone Amp Power Supply Pin
Headphone Amp Ground Pin
Rch Headphone Amp Output Pin
Lch Headphone Amp Output Pin
Mute Time Constant Control Pin
Connected to HVSS pin with a capacitor for mute time constant.
ALC2 Input Pin
Analog Mixing Output Pin
No Connect.
No internal bonding. This pin should be left floating.
No Connect.
No internal bonding. This pin should be left floating.
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
No Connect.
No internal bonding. This pin should be left floating.
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,
Analog Input
BEEPR, BEEPL, AIN
MICOUT, MPE, MPI, VCOC, SPP, SPN, HPR, HPL,
Analog Output
MUTET, MOUT2, MOUT−, MOUT+
CAD0, CSN, CCLK, CDTI, I2C, SDTI, LRCK
Digital Input
(when M/S pin = “L”), BICK (when M/S pin = “L”),
M/S
CDTO, SDTO, LRCK (when M/S pin = “H”), BICK
Digital Output
(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.
These pins should be connected to DVSS.
These pins should be open.
MS0273-E-02
-9-
2005/04
AKM [ ASAHI KASEI MICROSYSTEMS ]
