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6-7. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC301 µPD784215GF-516-3BA (SYSTEM CONTROLLER)
Pin No.
Pin Name
1, 2
NC
3
LED LAT
4
DRV CS
5
RE
6
WE
7
DRV RST
8
NC
9
VDD
10
BD RST
11
BD PWR
12, 13
NC
14
LD OUT
15
LD IN
16
STK DW
17
STK UP
18
OUT SW
19
IN SW
20
STK SW
21
MID SW
22
TEST
23
INIT SW
24
CNT SW
25
PANEL SW
26
(GND)
27
ADJ
28
AMUTE
29
DATA
30
CLK
31
XLT
32
BUSCLK
BUSD0 to
33 to 36
BUSD3
37
VDD
38
X2
*1 Loading motor (M502) control
Function
IN
Terminal
LD IN (pin !∞)
"L"
LD OUT (pin !¢)
"H"
I/O
O
Not used (open)
O
Serial data latch pulse output to the LED driver (IC602) "L" active
O
Chip select signal output to the fluorescent indicator tube driver (IC601) "L" active
O
Data read enable signal output to the S-RAM (IC315) "L" active
O
Data write enable signal output to the S-RAM (IC315) "L" active
Reset signal output to the fluorescent indicator tube driver (IC601) and LED driver (IC602)
O
"L": reset
O
Not used (open)
—
Power supply terminal (+5V)
O
Reset signal output to the BD section "L": reset
Power on/off control signal output for the BD section power supply "L": power on
O
Not used (open)
O
Not used (open)
O
Motor control signal output to the loading motor driver (IC371) "L" active
O
Motor control signal output to the loading motor driver (IC371) "L" active
O
Motor control signal output to the elevator up/down motor driver (IC371) "L" active
O
Motor control signal output to the elevator up/down motor driver (IC371) "L" active
Detection input from the disc tray open/close detect switch (SW505)
I
"L": disc tray is open, "H": disc tray is close
Detection input from the disc tray open/close detect switch (SW505)
I
"L": disc tray is close, "H": disc tray is open
Detection input from the stocker switch (SW501)
I
"L": when sub tray is completely set into the stoker
Detection input from the mid switch (SW504)
I
"L": when sub tray is at the position where it between removed tray and set into the stoker
I
Input terminal for the test (fixed at "L" in this set)
Detection input from the init switch (SW502)
I
"L": when disc tray is at the position where it can be play
Detection input from the count switch (SW503)
I
"L": when elevator is at the position where it each sub tray stock position
Detection input from the CD tray open/close detect switch (S671)
I
"L": CD panel close, "H": CD panel open
I
Not used (fixed at "L")
I
Input terminal for the CD test mode setting "L": test mode, normally: "H"
O
Analog line muting on/off control signal output terminal "L": line muting on
O
Serial data output to the CXD2519Q (IC103) in BD section
O
Serial data transfer clock signal output to the CXD2519Q (IC103) in BD section
O
Serial data latch pulse output to the CXD2519Q (IC103) in BD section "L" active
I
Bus data reading clock signal input for the system control bus
I/O
Two-way data bus with the system control bus
—
Power supply terminal (+5V)
O
Main system clock output terminal (12.5 MHz)
RUN
OUT
BRAKE
IDLE
"H"
"H"
"L"
"L"
"H"
"L"
Function
*2 Elevator up/down motor (M501) control
Function
Terminal
STK UP(pin !¶)
STK DW (pin !§)
– 37 –
*1
*1
UP
DOWN
BRAKE
"L"
"H"
"H"
"H"
"L"
"H"
*2
*2
RUN
IDLE
"L"
"L"
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