Tally T5023+ Programming Manual page 388

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