an12940aa Panasonic Corporation of North America, an12940aa Datasheet - Page 13

• Manufacturer Part Number: an12940aa
• Description: Audio Signal Processing Ic For Notebook Pc
• Manufacturer: Panasonic Corporation of North America

■ Terminal Equivalent Circuits (continued)
Pin No.
56
2
1
5
56
2
Equivalent Circuits
13.1 kΩ
31.7 kΩ
13.1 kΩ
31.7 kΩ
V
V
V
REF
240 kΩ
REF
REG
80 kΩ

(2.25 V)
(2.25 V)
(4.5 V)
5
SDC00044AEB
Alarm entry:
It is the entry pin to enter an alarm
signal. With the alarm mix amplifier, the
same signal is entered both by
L-channel and R-channel.
The entry impedance: About 45 kΩ
V
It is the power (V
regulator circuit to create the inner
power V
separating from V
pin 29 fully inside. It is desirable to
separate as far as it finishes coming
out about the P board pattern, too.
Standby on/off changing SW:
It changes whether or not it makes
this IC an operation condition or
whether or not it makes it a standby.
In that the power changes a connected
condition to the standby, the circuit
electric current can be almost made
0.
The entry impedance: About 80 kΩ
Beep input:
It is the entry pin to enter beep signal. AC −16 dBV
The same signal is entered both by
L-channel and R-channel with the
audio signal mix amplifier of the fol-
lowing paragraph. Also, it has the func-
tion which is the same as the PCcard sig-
nal entry by pin 4, the modem signal
entry by pin 54 completely.
The entry impedance: About 45 kΩ
CC
Low: Standby
High: The operation condition
:
REG
Description
with the voltage. It is
CC
) pin to supply the
CC
_SP of pin 28,
AN12940AA
and Voltage
Corrugation
AC −16 dBV
Open voltage
DC 2.25 V
DC 2.25 V
DC 5.0 V
DC 0 V
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