Tally T5023+ Programming Manual - page 388
Description of the physical interface
Appendix
378
T5023/5023+ - Programming Guide
Signal description printer side (Centronics plug) in the compatibility
mode and ECP-mode
Pin-No.
Source
ECP-Mode
Compatible Mode
1
Host
HostClk
nStrobe
2
Bidirectional
Data 1 (LSB)
Data 1 (LSB)
3
Bidirectional
Data 2
Data 2
4
Bidirectional
Data 3
Data 3
5
Bidirectional
Data 4
Data 4
6
Bidirectional
Data 5
Data 5
7
Bidirectional
Data 6
Data 6
8
Bidirectional
Data 7
Data 7
9
Bidirectional
Data 8 (MSB
Data 8 (MSB
10
Printer
PeriphClk
nAck
11
Printer
PeriphAck
Busy
12
Printer
nAckReverse
PError
13
Printer
Xflag
Select
14
Host
HostAck
nAutoFd
15
Not defined
Not defined
16
Logic Grd
Logic Grd
17
Chassis Grd
Chassis Grd
18
Printer
Peripheral Logic High
Peripheral Logic High
19
Signal Ground
(nStobe)
Signal Ground
(nStobe)
20
Signal Ground
(Data 1)
Signal Ground
(Data 1)
21
Signal Ground
(Data 2)
Signal Ground
(Data 2)
22
Signal Ground
(Data 3)
Signal Ground
(Data 3)
23
Signal Ground
(Data 4)
Signal Ground
(Data 4)