Oki C9500dxn Maintenance Manual page 195

1.5 Parallel I/F Signals
Table 8-1 shows interface signal names and pin numbers.
Pin No. Signal Name
1 Nstrobe (HostClk)
2 DATA 1
3 DATA 2
4 DATA 3
5 DATA 4
6 DATA 5
7 DATA 6
8 DATA 7
9 DATA 8
10 nAck (PtrClk)
11 Busy (PtrBusy)
12 PError (AckDataReq) PR
13 Select (Xflag)
14 NAutoFd (HostBusy)
15 -
16 GND
17 FG
18 +5V
19
~ GND
30
31 Nlnit (nlnit)
32 NFault (nDataAvail)
33 GND
34 -
35 HILEVEL
36 Nselectin
(IEEE 1284 active)
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.
41956001TH Rev.1
Table 8-1 Signals
Signal Direction Functions
PR Pulse for reading data in at trailing edge.
8-bit parallel data.
PR Each signal is HIGH when data is logical 1 and
LOW when it is logical 0.
PR Indicates the completion of data reception.
PR Indicates whether the printer is ready for receiving
data. Data cannot be received while the signal is
HIGH.
Indicates paper error when held HIGH.
PR HIGH without exception when the parallel
interface is enabled.
PR Used in bidirectional communication.
Unassigned.
Signal ground.
Chassis ground.
PR Used for supplying +5V. Power cannot be
supplied to the outside of the printer.
Signal ground.
PR Initializes the printer when held LOW.
PR LOW during alarm.
Signal ground.
Unassigned.
PR Pulled up to +5V at 3.3K inside the printer.
PR Used in bidirectional communication. Low without
exception in compatible mode.
Oki Data CONFIDENTIAL
195 /