Printronix L1524 Setup Manual page 129

Pin
26
27
28
29
30
31
32
33
34
35
36
NOTE:
Host Clock / nWrite. Driven by host. Data transferred from host to printer. When
printer sends data, two types are available: in Nibble Mode (signal is set high) or
in Byte Mode (signal is set low).
Data 1 through Data 8. These pins are host-driven in Compatibility Mode and
bidirectional in Byte Mode. They are not used in Nibble Mode. Data 1 is the least
significant bit; Data 8 is the most significant bit.
Printer Clock / Peripheral Clock / Interrup. Driven by the printer. A signal from
the printer indicating the character or function code has been received and the
printer is ready for the next data transfer.
Printer Busy / Peripheral Acknowledge / nWait. Driven by the printer. Indicates
that the printer cannot receive data. (Data bits 4 and 8 in the Nibble Mode.)
Acknowledge Data Request / nAcknowledge / nWait. Driven by the printer.
Indicates that the printer is in a fault condition. (Data bits 3 and 7 in Nibble
Mode.)
Host I/O Interfaces
Source of Data
Printer
Printer
Printer
Printer
Printer
Printer
Printer
Printer
Printer
Printer
Printer
The length of the data cable from the host computer to the printer
should not exceed 10 meters (32 feet).
Type of Mode
Compatible Nibble
Signal Ground (Data 7)
Signal Ground (Data 8)
Signal Ground (PError, Select, nAck)
Signal Ground (Busy, nFault)
Signal Ground (nAuto, nSelectIn, nInit)
nInit
NFault nDataAvail
Not Defined
Not Defined
Not Defined
nSelectIN 1284 Active
Byte
aDataAvail
1284 Active
B–13