BTP-R990 User’s Manual
- 14 -
6 Interface signal
6.1 Parallel interface
Parallel interface can work in IEEE 1284 compatible mode or nibble byte mode. The interface is 36PIN
socket.
The Interface is defined as below:
PIN
No.
Signal
source
Signal definition
1 H
nStrobe
2
H
Data 0 (Least Significant Bit)
3 H
Data
1
4 H
Data
2
5 H
Data
3
6 H
Data
4
7 H
Data
5
8 H
Data
6
9
H
Data 7 (Most Significant Bit)
10 P
nAck
11 P
Busy
12 P
Perror
13 P
Select
14 H
nAutoFd
15
Not
defined
16
Logic
Gnd
17
Chassis
Gnd
18
P
Peripheral Logic High
19
Signal Ground (nStrobe)
20
Signal Ground (Data 1)
21
Signal Ground (Data 2)
22
Signal Ground (Data 3)
23
Signal Ground (Data 4)
24
Signal Ground (Data 5)
25
Signal Ground (Data 6)
26
Signal Ground (Data 7)
27
Signal Ground (Data 8)
28
Signal Ground (PError, Select, and nAck)
29
Signal Ground (Busy and nFault)
30
Signal Ground (nAutoFd, nSelctIn, and nInit)
31 H
nInit
32 P
nFault
33
Not defined
34
Not
defined
35
Not
defined
36 H
nSelectIn
