
Chapter 5 IEEE 1284 Parallel Interface
Table 10. 1284 Signals (continued)
|
|
| Type of Mode |
| |
Pin | Source of Data |
|
|
| |
Compatible | Nibble | Byte | |||
|
| ||||
|
|
|
|
| |
|
|
|
| ||
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 | |
|
|
|
|
|
NOTE: The length of the data cable from the host computer to the printer should not exceed 32 feet (10 meters).
300