Pioneer PDP-R04E, Service Manual

Page: 218 / 233

PDP-R04E
167
5 6 7 8
5 6
7
8
C
D
F
A
B
E
No. Pin Name I/O
Pin Function
1 A15 I Address input
2 A14 I Address input
3 A13 I Address input
4 A12 I Address input
5 A11 I Address input
6 A10 I
Address input
7 A9 I Address input
8 A8 I Address input
9 A19 I Address input
10 N.C.
−
Pin not connected internally
11 WE I
Write enable
12 RESET I Hardware reset pin / Temporary sector unprotection
13 N.C.
−
Pin not connected internally
14 N.C.
−
Pin not connected internally
15 RY/BY O Ready/Busy output
16 A18 I Address input
17 A17 I Address input
18 A7 I Address input
19 A6 I Address input
20 A5 I Address input
21 A4 I Address input
22 A3 I Address input
23 A2 I Address input
24 A1 I Address input
25 A0 I Address input
26 CE I Chip enable
27 VSS
−
Ground
28 OE I Output enable
29 DQ0 I/O Data input/output
30 DQ8 I/O Data input/output
31 DQ1 I/O Data input/output
32 DQ9 I/O Data input/output
33 DQ2 I/O Data input/output
34 DQ10 I/O Data input/output
35 DQ3 I/O Data input/output
36 DQ11 I/O Data input/output
37 VCC
−
Power supply
38 DQ4 I/O Data input/output
39 DQ12 I/O Data input/output
40 DQ5 I/O Data input/output
41 DQ13 I/O Data input/output
42 DQ6 I/O Data input/output
43 DQ14 I/O Data input/output
44 DQ7 I/O Data input/output
45 DQ15/A-1 I/O Data input/output
46 VSS
−
Ground
47 BYTE I Selects 8-bit or 16-bit mode
48 A16 I Address input
Pin Function