[AK4691]
No. Pin Name
DAC Block
F9 LOUT
F8 ROUT
HP-Amp Block
H8 HPL
J7 HPR
H9
MUTET
I/O
O
O
O
O
O
O
O
I
O
I
I
Lch Stereo Line Output Pin
Rch Stereo Line Output Pin
Function
Lch Headphone-Amp Output Pin
Rch Headphone-Amp Output Pin
Mute Time Constant Control Pin
Connected to VSS4 pin with a capacitor for mute time constant.
Speaker Amp Negative Output Pin
Speaker Amp Positive Output Pin
Mute Pin
“L”: Normal Operation, “H”: Mute
Output Pin for Loop Filter of PLL Circuit
This pin should be connected to VSS1 with one resistor and capacitor in series.
Power-Down Mode Pin
“H”: Power-up, “L”: Power-down, reset and initialize the control register.
BEEP Signal Input Pin
No Connection Pin
No internal bonding. This pin should be connected to ground.
SPK-Amp Block
J5 SPN
J6 SPP
Other Functions
J4
B9
H5
E8
A1
A9
C3
J1
J2
J9
MUTE
VCOC
PDN
BEEP
NC
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Note 1. All input pins except analog input pins (BEEP, INTL1/2, EXTL1/2, INTR1/2, EXTR1/2, LIN, and RIN) should
not be left floating.
Note 2.All analog input pins (INTL1/2, EXTL1/2, INTR1/2, EXTR1/2, LIN, and RIN pins ) except the BEEP pin should
be supplied signal via AC-coupling capacitor.
Note 3. The BEEP pin should be supplied signal via AC-coupling capacitor and resistor.
Note 4. Analog output pins (HPL, HPR, LOUT, and ROUT pins) except the SPP and SPN pins should deliver signal via
AC-coupling capacitor.
■
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Pin Name
MPWR, VCOC, SPN, SPP, HPR, HPL, MUTET,
ROUT, LOUT, BEEP
INTL1, INTL2, INTR1, INTR2, EXTL1, EXTL2,
EXTR1, EXTR2, LIN, RIN
MCKO, SDTO1, SDTO2
MCKI, SDTI, MUTE
NC
Setting
These pins should be open.
These pins should be open and each path
should be switched off.
These pins should be open.
These pins should be connected to VSS2.
This pin should be connected to ground
(VSS1, VSS2, VSS3 or VSS4).
Digital
Other
MS0672-E-00
-6-
2007/11
AKM [ ASAHI KASEI MICROSYSTEMS ]
