Pioneer CB-A802, Service Manual

Page: 154 / 168

DVD-V8000
154
1 2 3 4
1 2 3 4
C
D
F
A
B
E
• LCD Control IC
Pin Function
PE5557B (DVDM ASSY: IC1501)
No. Pin Name I/O Pin Functions
1 KEY_OUT2 O Key matrix output
2 KEY_OUT3 O Key matrix output
3 KEY_OUT4 O Key matrix output
4 AVSS
−
Analog ground
5 LCD_VR O LCD display density adjustment
6 P131
−
Not used
7 AVREF1
−
A/D reference voltage input
8 SI2
−
Not used
9 SO2
−
Not used
10 XSCK2
−
Not used
11 S_MTOF I FR microcomputer communication
12 S_FITOM O FR microcomputer communication
13 SSCK O FR microcomputer communication
14 XREDY_3V O FR microcomputer communication control
15 LT1_3V I FR microcomputer communication control
16 REL_CS O Real time clock select signal
17 REL_DATA I/O Real time clock data
18 REL_CLK O Real time clock signal
19 DB0 I/O LCD data bus
20 DB1 I/O LCD data bus
21 DB2 I/O LCD data bus
22 DB3 I/O LCD data bus
23 DB4 I/O LCD data bus
24 DB5 I/O LCD data bus
25 DB6 I/O LCD data bus
26 DB7 I/O LCD data bus
27 E O LCD enable signal
28 R/XW O LCD read/write signal
29 RS O LCD mode select signal
30 KRY_OUT5 O Key matrix output
31 P54 I State setting input
32 P55 I State setting input
33 VSS1
−
Digital ground
34 P56 I State setting input
35 P57 I State setting input
36 XBRIGHT
−
Not used
37 P61
−
Not used
38 PWR_KEY I Power on key input
39 XLCDON O LCD backlight lighting signal
40 P64
−
Not used
41 P65
−
Not used
42 P66
−
Not used
43 P67
−
Not used
44 P30
−
Not used
45 P31
−
Not used
46 P32
−
Not used
47 HXRST O System reset signal
48 P_CON O Power control signal