la2806m Sanyo Semiconductor Corporation, la2806m Datasheet - Page 5

• Manufacturer Part Number: la2806m
• Description: Signal Processor And Power Amplifier Ic For Telephone Answering Machines
• Manufacturer: Sanyo Semiconductor Corporation

Mode Selection
Notes
2WAY BEEP : LINE OUT –6 dB
1 = ON and 0 = OFF (SW1 to SW5, SW8, SW9 and SW11)
Pin Functions
MUTE
ICM REC
2WAY REC
DICT REC
2WAY BEEP
ICM OUT
ICM PLAY
OGM REC
OGM CHANGE
OGM OUT
OGM PLAY
ROOM MONI
ROOM OUT
VOICE SELE
Conversation
recording
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Mode
1
2
3
4
5
6
7
8
9
HIGH LOW HIGH HIGH HIGH LOW
HIGH LOW LOW HIGH HIGH LOW
HIGH LOW LOW HIGH LOW
HIGH HIGH HIGH LOW HIGH LOW
HIGH HIGH HIGH HIGH HIGH LOW
LOW HIGH HIGH LOW LOW
LOW LOW HIGH LOW LOW
LOW LOW LOW HIGH LOW
LOW LOW HIGH HIGH HIGH LOW
LOW HIGH HIGH LOW HIGH LOW
LOW LOW HIGH LOW HIGH LOW
LOW HIGH LOW HIGH LOW
LOW LOW HIGH HIGH HIGH LOW
LOW HIGH HIGH HIGH HIGH LOW
REC
OFF
ON/
VOX. C/MUTE
PWR ON/OFF
LINE ON/OFF
REC ON/OFF
OGM/BEEP
PWR MONI
BIAS/GAIN
PWR OUT
LINE OUT
PRE OUT
Pin name
ALC. CT
FIL OUT
PRE NF
PWR IN
LINE
V. REF
OFF
PB NF
SIG IN
FIL NF
P.GND
ON/
P.V
GND
LINE
VOX
V
ICM
MIC
D.C
TH
D0
D1
CC
CC
PWR
OFF
ON/
D1
INPUT
Bias. Recording amplifier gain and recording bias current controled by external
resistor.
Incoming head input/output
Playback amplifier feedback. Receives negative feedback input from PRE OUT
(pin 8).
Preamplifier ground
Line input
Microphone input
Preamplifier feedback. Receives negative feedback input from PRE OUT (pin 8).
Preamplifier/playback amplifier output
Automatic level control time constant adjust input
Preamplifier/playback amplifier output signal input
Outgoing message/beep input
Filter amplifier negative feedback input
Filter amplifier output
Internal reference voltage output (Approx. 2.2 V)
Preamplifier supply
Power amplifier ground
Power amplifier output
Power amplifier supply
Power amplifier reference voltage output (Approx. 4/9 x P.V
Power amplifier input
Power amplifier monitor output
Line amplifier output
Voice-operated switch (VOX) threshold adjust input. VOX sensitivity can be adjusted
by connecting this signal to the V
Voice-operated switch (VOX) detection and mute control
Voice-operated switch (VOX) open-collector output
Incoming message, line, microphone and outgoing message/beep analog switch
control inputs.
Power amplifier ON/OFF analog switch control input
Line amplifier ON/OFF analog switch control input
Recording amplifier ON/OFF analog switch control input
D0
MUTE
HIGH
LOW
LOW
LOW
LOW
LOW
LA2806M
SW11
SW1/
REC
ICM
1
1
1
1
0
0
0
0
0
0
0
0
0
1
PLAY
SW2
ICM
0
0
0
0
1
1
0
0
0
0
0
0
0
0
SW3
LINE
1
1
0
1
0
0
0
1
1
1
0
1
1
1
REF
SW4
pin (pin 14) via a resistor.
MIC
Functions
0
0
1
0
0
0
1
0
0
0
1
0
0
0
MUTE
SW5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
PRE/
OGM
SW6
1
1
1
0
1
1
1
1
0
0
1
1
1
1
/OGM
MONI
CC
SW7
1
1
1
1
1
1
1
1
1
1
1
1
0
0
)
SW8
LINE
0
0
0
1
1
0
0
0
1
0
1
0
1
1
No. 3852 - 5/11
PWR
SW9
1
0
0
1
1
1
0
1
1
1
0
1
1
1
SW10
PRE/
EQ
0
0
0
0
1
1
0
0
0
0
0
0
0
0