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3-1. IC PIN DESCRIPTION

• IC601 LC876756C-51H7-E (SYSTEM CONTROL, FLD CONTROL) (PANEL BOARD)
Pin No.
Pin Name
1
SYS MUTE
2
BU1924 DATA
3
PWR DOWN
4
LC78646 RESET
5
LC78646 CE
6
LC78646 CE (MP3)
7
M61519 CLK
8
BU2099FV LCK
9
LC72121 CE
10
LC78684 SYNC
11
RESET
12
XT1
13
XT2
14
VSS1
15
CF1
16
CF2
17
VDD
18
TAPE A STAT
19
TAPE B STAT
20
CD ENCODER
21
SW ON/OFF SENSOR
22
STREAM IN
23
VACS
24
KEY2
25
KEY1
26
KEY0
27
PROTECTOR (HOLD)
28
REMOCON IN
29
BU1924 CLK
30 – 41
G12 – G1
42 – 45
P1 – P4
46
VDD3
47 – 50
P5 – P8
51
VPP
52 – 55
P9 – P12
56
SW1 (a) P13
57
SW2 (b) P14
58
SW3 (c) P15
59
SW4 (d) P16
60
SW5 P17
61
SW6 P18
62
SW7 P19
63
SW8 P20
64, 65
P21, P22
66
ENTER LED
67
MD/VIDEO LED
68
GAME LED
69
TAPE LED
70
TUNER LED
71
CD LED
72
VDD4
SECTION 3

DIAGRAMS

I/O
O
System mute signal output
I
Not used in this set. (Connected to ground.)
I
Power down signal input
O
CD reset signal output to the IC721 (LC78646)
O
CD CE signal output to the IC721 (LC78646)
O
CD CE (MP3) signal output (Not used in this set.)
O
Clock signal output to the IC301 (M61529FP)
O
LCK signal output to the IC309 (BU2099FV)
O
CE signal output to the TU701 (tuner pack)
I
SYNC signal input
I
Reset signal input from the IC603
I
Oscillater connect pin (32.768 kHz)
O
Oscillater connect pin (32.768 kHz)
Ground pin
I
Ceramic vibrator connect pin (8.64 MHz)
O
Ceramic vibrator connect pin (8.64 MHz)
Power supply pin (+3.3 V)
I
Tape A start signal input
I
Tape B start signal input
I
CD encoder switch signal input
I
Switch control on/off signal input
I
Stream in signal input
I
VACS signal input
I
Key signal input 2
I
Key signal input 1
I
Key signal input 0
I
Protector (Hold) signal input
I
Remote control signal input from the RM601
I
Not used in this set. (Connected to ground.)
O
FLD control signal output
O
FLD control signal output
Power supply pin (+3.3 V)
O
FLD control signal output
Ground pin
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
FLD control signal output
O
Not used in this set. (Open)
O
Not used in this set. (Open)
O
GAME LED (LED612) drive signal output
O
TAPE LED (LED609) drive signal output
O
TUNER LED (LED608) drive signal output
O
CD LED (LED607) drive signal output
Power supply pin (+3.3 V)
Pin Description
HCD-GX25
17

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