Circuit Descriptions - Toshiba DP1200 Service Manual

2. Circuit descriptions

A. Man PWB (MCU)
(1) CPU signal table
PIN Signal
Input/output
No. code
1 /CS1 Output
2 /CS0 Output
3
4
5
6 A0 Output
7 A1 Output
8 A2 Output
9 A3 Output
10
11 A4 Output
12 A5 Output
13 A6 Output
14 A7 Output
15 A8 Output
16 A9 Output
17 A10 Output
18 A11 Output
19
20 A12 Output
21 A13 Output
22 A14 Output
23 A15 Output
24 A16 Output
25 A17 Output
26 A18 Output
27 A19 Output
28
29 A20 Output
30
Interruption
31 (SPPD)
level input
32 USB-IN Input
Interruption
33 (MHPS)
level input
/CPU Interruption
34
SYNC level input
35
36
Interruption
37 ZC
level input
Interruption
38 /ASICINT
level input
Operating
Chip Select for SRAM
Chip Select for EPROM
D-GND
D-GND
5V
Address Bus (NC-pull up)
Address Bus
Address Bus
Address Bus
D-GND
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
D-GND
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus (NC-pull up)
D-GND
Address Bus (NC-pull up)
NC-pull up
SPF Paper Pass Detector
USB Connector-In Detect
Mirror Home Position Sensor
Horizontal Synchronous (from
G/A)
D-GND
D-GND
Zero-cross signal
Intterupt from G/A
PIN Signal
Input/output
No. code
39
40 D0
input/output
41 D1
input/output
42 D2
input/output
43 D3
input/output
44
45 D4
input/output
46 D5
input/output
47 D6
input/output
48 D7
input/output
49 D8
input/output
50 D9
input/output
51 D10
input/output
52 D11
input/output
53
54 D12
input/output
55 D13
input/output
56 D14
input/output
57 D15
input/output
58
(OP-
59 Output
DATA)
60 FTXD Output
61 FRTS Output
62 FRXD
63 (OP-CLK) Output
64 TMON Output
65
66 FCTS
67
68
13 – 3
DP1200/1500
Operating
5V
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
D-GND
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
D-GND
Data
Data Bus
Data
Data Bus
Data
Data Bus
Data
Data Bus
5V
Data Signal for Operation
Panel
TXD for Additional Board
RTS for Additional Board
Input RXD for Additional Board
Clock for Operation Panel
Power Supply Signal for Toner
Motor Driver IC
D-GND
Input CTS for Additional Board
D-GND
D-GND