3- Parallel Interface Pins Assignment For Each Mode; Fig. 11. - Parallel Interface Pins - Fenix EPC1200 Operation Manual

4.4.3- Parallel interface pins assignment for each mode

Pin Source
1 Host Sys.
2 Host Sys/printer
3 Host Sys/printer
4 Host Sys/printer
5 Host Sys/printer
6 Host Sys/printer
7 Host Sys/printer
8 Host Sys/printer
9 Printer
10 Printer
11 Printer
12 Printer
13 Printer
14 Host Sys.
15 Printer
16 Host Sys.
17 Host Sys.
18-25
NOTES:
1) The 'n' prefix used before a signal name means that they are active in '0' logic level. If the host
system does not provide any of the signal lines mentioned above, both communication types
could fail.
2) It is recommended to use twisted pair cables (signal/ground), with the return sides connected to
the system signal ground level.
3) Do not ignore the nACK and BUSY signals during data transmissions. An attempt to transmit
data without nACK or BUSY control signals might cause lost data.
4) The interface cables should have the minimum required possible length (maximum
recommended length: 2 m).
Pin #1
Pin #2
Compatibility mode
nStrobe
Data0 (LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7 (MSB)
nAck
Busy
PError
Selected
Nautofeed
nFault
nInit
nSelectIn
GND
Table 3. - PC parallel connector (DB25)

Fig. 11. - Parallel interface pins

EPC1200 SERIES OPERATION MANUAL
Nibble mode
HostClk
Data0 (LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7 (MSB)
PrtClk
PrtBusy/Data3,7
AckDataReq/Data2,6
Xflag/Data1,5
HostBusy
nDataAvail/Data0,4
NInit
1284-Active
GND
Pin #23
Pin #24
16/56