41956001TH Rev.1
195 /
Oki Data CONFIDENTIAL
1.5 Parallel I/F Signals
Table 8-1 shows interface signal names and pin numbers.
Table 8-1 Signals
Pin No.
Signal Name
Signal Direction
Functions
1
Nstrobe (HostClk)
→
PR
Pulse for reading data in at trailing edge.
2
DATA 1
3
DATA 2
4
DATA 3
8-bit parallel data.
5
DATA 4
→
PR
Each signal is HIGH when data is logical 1 and
6
DATA 5
LOW when it is logical 0.
7
DATA 6
8
DATA 7
9
DATA 8
10
nAck (PtrClk)
←
PR
Indicates the completion of data reception.
11
Busy (PtrBusy)
←
PR
Indicates whether the printer is ready for receiving
data. Data cannot be received while the signal is
HIGH.
12
PError (AckDataReq)
←
PR
Indicates paper error when held HIGH.
13
Select (Xflag)
←
PR
HIGH without exception when the parallel
interface is enabled.
14
NAutoFd (HostBusy)
→
PR
Used in bidirectional communication.
15
-
Unassigned.
16
GND
Signal ground.
17
FG
Chassis ground.
18
+5V
←
PR
Used for sup5V. Power cannot be
supplied to the outside of the printer.
19
~
GND
Signal ground.
30
31
Nlnit (nlnit)
→
PR
Initializes the printer when held LOW.
32
NFault (nDataAvail)
←
PR
LOW during alarm.
33
GND
Signal ground.
34
-
Unassigned.
35
HILEVEL
←
PR
Pulled up to +5V at 3.3K
Ω
inside the printer.
36
Nselectin
→
PR
Used in bidirectional communication. Low without
(IEEE 1284 active)
exception in compatible mode.
Note:
Parenthesized signal names are used in nibble mode.
Only functions in compatible mode are listed.
The C9300/C9500 series of printers supports the IEEE std 1284-1994 nibble mode.
Note that, when used with personal computers or cables that do not comply with the
standards, the printers may exhibit unpredictable behavior.
Содержание C9300 Series
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