Pioneer DVL-K88, Service Manual

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DVL-K88
78
PD4929B (FLKY ASSY: IC101)
Syetem microcomputer for DVD karaoke and Syetem microcomputer for FL
No. Pin Name I/O Function
1 T6 O FL grid output
2 T5 O FL grid output
3 T4 O FL grid output
4 T3 O FL grid output
5 T2 O FL grid output
6 T1 O FL grid output
7 T0 O FL grid output
8 Vcc - Positive power supply
9 XSCK0 O Serial communication clock for DSP
10 SO0 O Serial communication data output for DSP
11 SI0 I Serial communication data input for DSP
12 LATCH I Communication permission input from system microcomputer
13 XREADY O Communication request output to system microcomputer
14 XSCK1 (*1) Serial communication clock for system microcomputer
15 SO1 (*1) Serial communication data output to system microcomputer
16 SI1 I Serial communication data input from System microcomputer
17 XRESET IN I Reset input
18 I/O CLK O Clock output for I/O expander
19 I/O DATA O Data output for I/O expander
20 Vss - Ground voltage for A/D converter
21 XREXET OUT O System reset signal output
22 KEY0 I Key input (A/D input)
23 KEY1 I Key input (A/D input)
24 KEY2 I Key input (A/D input)
25 ECHO VOL I Digital echo volume input (A/D input)
26 G.V. VOL I Guide vocal sound volume input (A/D input)
27 MIC CONT I MIC control input (A/D input)
28 MODEL SELECT I Version selector (A/D input)
29 AVDD - Analog power supply for A/D converter
30 AVREF I Reference voltage input for A/D converter
31 XREQ I Data transfer request input from DSP
32 NC O Not used
33 Vss - Ground voltage
34 X1 I System clock oscillation connection
35 X2 - System clock oscillation connection
36 LED(GUIDE V.) O Guide vocal sound volume LED (L:lit)
37 A/XD O Address/data selector for DSP
38 XDRDY I Signal reception ready status input from DSP
39 DSP XCS O Chip select output for DSP
40 POWER ON O System power ON signal output
Pin Function
7. GENERAL INFORMATION
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
7.1 IC