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centron.txt
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1989-08-09
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25 lines
Centronics Parallel Inteface Standard
Signal name pin(s) Source Category Description
Data strobe 1, 19 IBM Timing A 1 microsec pulse to clock data
Data 1 2, 20 IBM Data Each one of these leads provides
Data 2 3, 21 IBM Data for a single bit of a data
Data 3 4, 22 IBM Data character. A high represents a
Data 4 5, 23 IBM Data 1; a low represents a 0.
Data 5 6, 24 IBM Data
Data 6 7, 25 IBM Data
Data 7 8, 26 IBM Data
Data 8 9, 27 IBM Data
Acknowledge 10, 28 Ptr Control Indicates reception of a character
Busy 11, 29 Ptr Control Printer cannot recieve more data.
PE 12 Ptr Control Printer out of paper.
Select 13 Ptr Control Indicates that printer is selected.
0 volts 14 Ptr Ground Signal ground reference.
OSCXT 15 Ptr ---- A 100/200 kHz signal
0 volts 16 N/A Ground Signal ground reference.
Chassis ground 17 Ptr Ground Frame ground for electrical safety
+5 volts 18 Ptr ---- Positive voltage.
Input prime 31, 30 IBM Control Resets printer.
Fault 32, Ptr Control Indicates a printer fault condition
Press any key when done. Press F1 for help!