Pin Assignment - Epson FilmScan 200 Service Manual

1.3.2.5 Pin Assignment

Pin assignments are presented in Table 1-6.
Table 1-6. Pin Assignments (SCSI)
Signal I/O
GND
NC
DB0 I/O
DB1 I/O
DB2 I/O
DB3, I/O
DB4 I/O
DB5 I/O
DB6 I/O
DB7 I/O
DBP I/O
TERMPWR
ATN I
BSY I/O
ACK I
RST I
MSG O
SEL I/O
C/D O
REQ O
I/O O
Rev. A
Pin Number
,50 Pin
1, 12, 14, 25, 35, 7, 9, 14, 16,
37, 29, 40, 42
13
26
27
28
29
30
31
32
33
34
38
41
43
44
45
46
47
48
49
50
Description,
25 Pin
18, 24
8 Data Bus 0
21 Data Bus 1
22 Data Bus 2
10 Data Bus 3
23 Data Bus 4
11 Data Bus 5
12 Data Bus 6
13 Data Bus 7
20 Data Bus Parity
25 Term power
17 Attention
6 Busy
5 Acknowledge
4 Reset
2 Message
19 Select
15 Command / Data
1 Request
3 Input / Output
GENERAL DESCRIPTION
1- 11