– 34 –
1
VDD
–
+5 V power supply
2
–
–
Connected to ground
3
DISC. SENS
I
Input of disc sensor signal
“L” : No disc, “H” : Disc present
4
TABLE. R
O
Output of disc table clockwise rotation
5
TABLE. L
O
Output of disc table counterclockwise rotation
6
JOG. 1
I
Encoder switch input B
7
JOG. 0
I
Encoder switch input A
8
BD. PWR
O
Output of power ON/OFF to BD block
“L” : OFF, “H” : ON
9
BD. RST
O
Output of Reset signal to BD block
“L” : Reset
10
RESET
I
Input of system Reset signal
“L” : Reset
11
X2
O
Main system clock (5MHz)
12
X1
I
13
GND
–
Ground
14
–
–
Not used (open)
15
ADJ
I
Pin for test mode
“L” : Test mode
16
VDD
–
+5V power supply
17
CLOCK
O
Output of serial clock to IC103 (DSP) and IC104 (D/A converter)
18
DATA
O
Output of serial data to IC103 (DSP) and IC104 (D/A converter)
19
SENS
I
Input of various status signals from IC103 (DSP) and IC104 (D/A converter)
20
XLT
O
Output of serial data latch pulse to IC103 (DSP) and IC104 (D/A converter)
21
PRGL
O
Output of serial data latch pulse to digital filter
22
SOCLK
O
Output of subcode Q data reading clock to IC103 (DSP)
23
–
O
Not used (open)
24
SUBQ
I
Subcode Q data serial input from IC103 (DSP)
25
AVSS
–
Ground (for A/D converter)
26
FCSSW
O
Output of focus gain selection switch
“L” : Normal, “H” : Down
27
–
–
Not used (open)
28
LOD. OUT
O
Output of disc tray loading out
29
LOD. IN
O
Output of disc tray loading in
30
OUT. SW
I
Input of disc tray open complete signal
“L” : Completed
31
KEY. 3
I
Key data A/D input 2
32
KEY. 2
I
Key data A/D input 1
33
KEY. 1
I
Key data A/D input 0
34
AVDD
–
+5 V analog power supply (for A/D converter)
35
AV. REF
I
Input of reference voltage (+5 V) (for A/D converter)
36
SCOR
I
Input of subcode sync S0, S1 detection
37
TABLE. SENS
I
Input of table address detection sensor
38
BUS. OUT
O
Output of audio bus signal
39
BUS. IN
I
Input of audio bus signal
40
VSS
–
Ground
Pin No.
Pin Name
I/O
Function
5-5.
IC PIN FUNCTION DESCRIPTION
•
DISPLAY BOARD
IC501 µPD780205GF-021-3BA (SYSTEM CONTROL, FL TUBE DISPLAY DRIVE)
