45
HCD-DV2D
• IC Pin Function Description
MAIN BOARD IC501
µ
PD78007 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
RMUT
O
Tuner muting signal output
2
PMUT
O
Tape PLAY muting signal output
3
RPHD
O
REC/PLAY control signal output
4
BIAS
O
BIAS ON/OFF control signal output
5
TSOL
O
Tape solenoid control signal output
6
TMOT
O
Tape motor control signal output
7
TCNT
O
Tape control signal output
8
SMUTE
I
Not used Fixed at “L” in this set.
9
GND
—
Ground terminal
10
VDD
—
Power supply terminal (+5V)
11
STE
I
Stereo signal input
12
TUCE
O
Chip enable signal output to the tuner
13
TUND
I
Tuning signal input from the tuner
14
TOP
O
DVD/CD tray open control signal output
15
VEDA
O
Chip select output to the FL driver
16
VFCK
O
Clock output to the FL driver
17
VFSTB
O
Data output to the FL driver
18
TUDI
O
Data output to the tuner
19
TUDO
I
Data input from the tuner
20
TUCK
O
Clock output to the tuner
21
RDDA
O
Strobe signal input to the tuner
22
VUP
I
Volume up input
23
FPON
O
FL power supply control signal output
24
VDDI
—
Power supply terminal (+5V)
25
GND
—
Ground terminal
26
KEY1
I
Function key input
27
KEY2
I
Function key input
28
KEY3
I
Function key input
29
SFTY
I
AC cut detect signal input
30
HDPN
I
Tape SW (PACK, HDPLY) signal input
31
REPT
I
Tape SW (RECF, RECR) signal input
32
VER
I
Not used Fixed at “L” in this set.
33
VDWN
I
Volume down input
34
AVR
—
Reference voltage terminal
35
TCL
O
DVD/CD tray close control signal output
36
RST
I
System reset signal input
37
XT2
I
Subclock input (32.768KHz)
38
XT1
O
Subclock output (32.768KHz)
39
IC
—
Not used
40
X2
I
Main system clock input (8.38MHz)
41
X1
O
Main system clock output (8.38MHz)
42
GND
—
Ground terminal
43
SHFT
—
Not used Fixed at “L” in this set.
44
INH
I
Power down detect signal input
45
REM
I
SIRCS signal input from the remote control reciever
46
RDCK
O
RDCK signal output to the tuner
47
MRST
I
MPEG flash memory reset signal input
