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CFD-F10/F10L
6-15. IC PIN FUNCTION DESCRIPTION
• IC801 uPD789477GC-A44-8BT (SYSTEM CONTROLLER) (MAIN BOARD)
Pin No.
Pin Name
1, 2
NC
3 to 5
VLC2 to 0
6 to 9
COM0 to 3
10 to 26
S0 to 16
27
REC
28
AC-CHK
29
CD-DOOR
30
BLUE LED
31
NC
32
MEGA XPAND
33
NC
34
LINE
35
A-MUTE
36
CD
37
TAPE
38
AVDD
39
BTT-CHK-H
40
BTT-CHK-M
41
NC
42
3V-CHK
43 to 45
KEY3 to 1
46
MODE CHK
47
AGND
48
RMC
49
TC-PLAY
50
WP/INI
51
NC
52
C-WRQ
53
C-DOUT
54
C-DIN
55
C-CLK
56
R-COUNT
57
R-DATA
58
R-CLK
59
R-LAT
60
B-MUTE
61
C-DRF
62
C-CE
63
C-FSEQ
64
C-XRT
65
P-CON
66
ISS1
67
ISS2
68
M-BASS
69
ICO
70
XT1
71
XT2
72
VDD
73
VSS
74
X1
38
I/O
—
Not used. (Open)
I
LCD drive bias voltage input
O
LCD drive common output
O
LCD drive segment output
I
Tape record signal input
I
AC power supply detection signal input
I
CD door open/close switch input L: Close
O
BLUE LED control signal output
—
Not used. (Open)
O
MEGA XPAND control signal output
—
Not used. (Open)
O
LINE IN control signal output
O
Audio mute output H: Mute
O
CD function output H: CD
O
Tape function output H: Tape
—
Analog power supply pin for A/D converter (+3.3 V)
I
Battery check input for Hi-voltage
I
Battery check input for Mid-voltage
—
Not used. (Open)
I
Power supply check input (CD +3.3V)
I
Key input
I
Destination setting input
—
Analog ground for A/D converter
I
Sircs receiver data input
I
Tape play switch input L: Play
O
Wake-up/Initial setting read signal output
—
Not used. (Open)
I
CD write request data input
I
CD digital signal processor data input
O
CD digital signal processor data output
I
CD serial data transfer clock signal input
I
Tuner PLL IF count input
O
Tuner PLL data output
O
Tuner PLL clock output
O
Tuner PLL latch output
O
Tuner mute signal output
I
CD DRF signal input
O
CD chip enable output
I
CD frame SYNC input
O
CD system reset output
O
System power control output
O
ISS1 output
O
ISS2 output
O
MEGA BASS control output
I
Connected to VSS.
I
Sub system oscillation input (32.768 kHz)
O
Sub system oscillation output (32.768 kHz)
—
Main power supply pin for A/D converter (+3.3 V)
—
Main ground
I
Main system oscillation input (4.19 MHz)
Pin Description
H: REC
L: AC in
H: Mute
H: PCON
H: MEGA BASS off, L: MEGA BASS on
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