Connector Pin Assignment - Citizen iDP-3221 Series User Manual

6.1.3

Connector Pin Assignment

Pin No. Source
1 Host
2 Host/Printer
3 Host/Printer
4 Host/Printer
5 Host/Printer
6 Host/Printer
7 Host/Printer
8 Host/Printer
9 Host/Printer
10 Printer
11 Printer
12 Printer
13 Printer
14 Host
15
16
17
18 Printer
19
20
21
22
23
24
25
26
27
28
29
30
31 Host
32 Printer
33
34 Printer
35 Printer
36 Host
• "n" before the signal indicates that it is "L" active.
• Bi-directional communication is impossible if any one of the above signals is absent.
• Always use twisted-pair cables for signal lines, and connect return lines to signal ground.
• Ensure that the interface employs TTL level signals with the following mentioned characteristics, and that
signal rise and fall times are 0.5 µsec.
• Ignoring nAck and Busy signals while transferring data may result in loss of data.
• Ensure that the interface cable is of the minimum length possible.
Compatibility Mode
nStrobe
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
nAck
Busy
PError
Select
nAutoFd
(NC)
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nFault
GND
DK_STATUS
+5V
nSelectIn
24
NC: Non connection
Nibble Mode
HostClk
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
PtrClk
PtrBusy/Data3.7
AckDataReq/Data2.6
XFlag/Data1.5
HostBusy
(Undefined)
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nDataAvail/Data0.4
(Undefined)
(Undefined)
(Undefined)
IEEE 1284 Active
iDP3221 User's Manual
Byte Mode
HostClk
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
PtrClk
PtrBusy
AckDataReq
XFlag
HostBusy
(Undefined)
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nDataAvail
(Undefined)
(Undefined)
(Undefined)
IEEE 1284 Active
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