– 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)
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