Sharp AR-C240P Specifications Page 158

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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 supplying +5V. 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. 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.
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