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Output circuit: SN74LS06 or equivalent
Figure 5.2 shows the parallel interface output circuit.
5.2.2 Connector pin assignment
Connector (cable side): Shielded plug
Amphenol DDK57FE-30360 or equivalent
Figure 5.3 shows the parallel interface connector.
Figure 5.3 Parallel interface connector (IEEE1284-B)
Signal definition:
Table 5.1 lists parallel interface signals and their functions.
Connector
Return
pin
line pin
number
number
1
19
5-2
Figure 5.2 Parallel interface output circuit
1
19
Table 5.1 Parallel interface signals
Signal
Compati mode
Direction
Nibble mode
Data Strobe
Input
(DSTB)
Host Clock
+5 V
1 k
18
(Cable side)
(Male type)
36
Description
• Strobe pulse for reading data (Data 1 to Data 8).
The printer reads data when this signal is low.
• The pulse width must be 0.5 s or more at the
printer's receiving terminal.
This signal is set high when the host requests the
reverse data transfer phase (nibble mode).
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