Citizen iDP3221 ユーザーズマニュアル
iDP3221 User’s Manual
24
CITIZEN
6.1.3
Connector Pin Assignment
NC: Non connection
Pin No.
Source
Compatibility Mode
Nibble Mode
Byte Mode
1
Host
nStrobe
HostClk
HostClk
2
Host/Printer
Data0(LSB)
Data0(LSB)
Data0(LSB)
3
Host/Printer
Data1
Data1
Data1
4
Host/Printer
Data2
Data2
Data2
5
Host/Printer
Data3
Data3
Data3
6
Host/Printer
Data4
Data4
Data4
7
Host/Printer
Data5
Data5
Data5
8
Host/Printer
Data6
Data6
Data6
9
Host/Printer
Data7(MSB)
Data7(MSB)
Data7(MSB)
10
Printer
nAck
PtrClk
PtrClk
11
Printer
Busy
PtrBusy/Data3.7
PtrBusy
12
Printer
PError
AckDataReq/Data2.6
AckDataReq
13
Printer
Select
XFlag/Data1.5
XFlag
14
Host
nAutoFd
HostBusy
HostBusy
15
(NC)
(Undefined)
(Undefined)
16
GND
GND
GND
17
FG
FG
FG
18
Printer
Logic-H
Logic-H
Logic-H
19
GND
GND
GND
20
GND
GND
GND
21
GND
GND
GND
22
GND
GND
GND
23
GND
GND
GND
24
GND
GND
GND
25
GND
GND
GND
26
GND
GND
GND
27
GND
GND
GND
28
GND
GND
GND
29
GND
GND
GND
30
GND
GND
GND
31
Host
nInit
nInit
nInit
32
Printer
nFault
nDataAvail/Data0.4
nDataAvail
33
GND
(Undefined)
(Undefined)
34
Printer
DK_STATUS
(Undefined)
(Undefined)
35
Printer
+5V
(Undefined)
(Undefined)
36
Host
nSelectIn
IEEE 1284 Active
IEEE 1284 Active
•
"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.