Oki B2200 Maintenance Manual page 91

(3) Parallel I/F Signal List
Pin No. Signal Name
nStrobe(HostClk)
1
DATA 1
2
DATA 2
3
DATA 3
4
DATA 4
5
DATA 5
6
DATA 6
7
DATA 7
8
DATA 8
9
nAck(PtrClk)
10
Busy(PtrBusy)
11
Perror(AckDataReq)
12
Select(Xflag)
13
nAutoFd(HostBusy)
14
Reserved
15
GND
16
nlnit(nlnit)
17
HILEVEL
18
19-30 GND
nlnit(nlnit)
31
nFault(nDataAvail)
32
GND
33
Reserved
34
HILEVEL
35
nSelectIn
36
(IEEE 1284 active)
(Note 1) The signal name in parentheses shows the one in Nibble mode.
(Note 2) The function in Compatible mode is only described.
(Note 3) This printer supports the Nibble mode defined in the IEEE Standard 1284-1994 issued by
the Institute of Electrical and Electronics Engineers, Inc. Using computers or cables that are not
compliant with this standard may cause unexpected behavior.
• Connector pin arrangement
(4) Signal Level
• LOW : 0V to +0.4V
• HIGH : +2.4V to 5.0V
43641601TH Rev.1
Direction
TO PRINTER Pulse used for data reading.
Data is read at its trailing edge.
TO PRINTER 8-bit parallel data
High level: 1
Low level: 0
FROM PRINTER Signal indicating completion of data reception.It is outputted
at the trailing edge of Busy signal.
FROM PRINTER Signal indicating whether the printer is ready to receive data
or not. When the signal is at high level, the printer is not
ready to receive data.
FROM PRINTER This signal becomes high level when there is no paper in the
feeder entrance.
FROM PRINTER Always at high level.
TO PRINTER Used for bi-directional communication.
– Not connected.
– Signal ground
– Chassis ground
FROM PRINTER Pulled up to +5V through 3.3kΩ resistance inside the printer.
– Signal ground
TO PRINTER When the low level lasts for about 50 μs or longer, the printer
is initialized. This may be active even if the low level lasts
only for less than 50 μs. With the factory defaults, this signal
is ignored.
FROM PRINTER This signal becomes low level when the printer is in alarm
state.
– Signal ground
– Not connected.
FROM PRINTER Pulled up to +5V through 3.3kΩ resistance inside the printer.
TO PRINTER Used for bi-directional communication.
Oki Data CONFIDENTIAL
Function
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