Ic Pin Function - Sony TA-S2 Service Manual

3-6. IC PIN FUNCTION
¢ 1C301 MAIN CONTROLLER (TMP87C846N-41 09)
y/o
FUNC A
FUNC B
FUNC C
FUNC D
Output control A terminal, normal: "L".
Output control B terminal, normal: "L".
7 PWR LED
STANDBY LED
VOL LED
S.D. LED
1 MD LED
12 TAPE LED
13 CD LED
14 TUNER LED
15 PHONO LED
16 DAT LED
—
0 Source direct LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
Function LED drive signal. (ON: L)
GND terminal.
—_
Q}Q Zi Zz
=| 4
B
s
RESET /O | Reset signal. (Reset: L)
XIN Clock signal input terminal.
20 XOUT Clock signal output terminal.
2 Vss GND terminal.
22
23
24
VAREF A/D conversion power supply terminal.
Not used.
Position data of input selector switch.
Nn Nn
—_
Power supply terminal.
> 26 VOL DOWN
27 VOL UP
ttenuator volume down control signal, normal: "L".
Attenuator volume up control signal, normal: "L".
Not used. (Open)
Not used. (Open)
Not used. (Open)
AC cut signal. (Active: L)
N}T dS 'oO
Ww Oo
AC CUT
S. DIRECT
AUB IN
AUB OUT
SIRCS
L. MUTE
S. POWER
S.D. CTL
31
2
33
34
35
36
37
38
w
Source direct key input terminal. (Active: L)
AU BUS signal input terminal, normal: "H".
AU BUS signal output terminal, normal: "L".
SIRCS signal input terminal, normal: "H".
Line mute control signal. (Active: L)
nN
stem power supply control signal. (Active: H)
n
ource direct control signal. (Active: H)
Not used. (GND)
ELAY signal input terminal. (Active: L)
Ww \o
40
Al
42
RELAY
TA/TAE
VppD
<|/7/z
3|S}o
QO
A/TAE select signal input terminal.
Power supply (+5V) terminal.