Signals
301
NOTE: The length of the data cable from the host computer to the printer
should not exceed 32 feet (10 meters).
12 Printer PError AckDataReq AckDataReq
13 Printer Select Xflag Xflag
14 Host nAutoFd Host Busy HostAck
15 Not Defined
16 Logic Grid
17 Chassis Grid
18 Printer Peripheral Logic High
19 Signal Ground (nStrobe)
20 Signal Ground (Data 1)
21 Signal Ground (Data 2)
22 Signal Ground (Data 3)
23 Signal Ground (Data 4)
24 Signal Ground (Data 5)
25 Signal Ground (Data 6)
26 Signal Ground (Data 7)
27 Signal Ground (Data 8)
28 Signal Ground (PError, Select, nAck)
29 Signal Ground (Busy, nFault)
30 Signal Ground (nAutoFd, nSelectIn, nInit)
31 Host nInit
32 Printer NFault nDataAvail aDataAvail
33 Not Defined
34 Not Defined
35 Not Defined
36 Host nSelectIn 1284 Active 1284 Active
Table 13. IEEE 1284 Signals (continued)
Pin Source of Data
Type of Mode
Compatible Nibble Byte
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