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Pin
no.
Signal name
GND In/Out Description
14 HostBusy 30 In Set LOW to indicate that host
can receive peripheral
device to host data. Then set
high to acknowledge receipt
of that nibble. Set high in
response to PtrClk
(nAck) low pulse to re-enter
reverse data transfer phase.
31
INIT 30 In Set LOW to initialize the printer.
32
DataAvail/
DataBit-0,4
29 Out This signal is LOW when the
printer is in an error state.
36 1284-Active 30 In Set HIGH during 1284 mode.
18 Logic H - Out A high signal indicates that all
other signals sourced by the
peripheral are in a valid state.
35 +5V - Out This line is pulled up to +5V
through 3.3 kΩ resistance.
17 Chassis - - Chassis GND.
16, 33,
19-30
GND - - Signal GND.
15 ,34 NC - - Not connected.
* In/Out shows the direction of signal flow as viewed from the printer.
L
Sunflower-E
rev.D
A5 size Appendix
02/05/96
pass 2
A-16
Specifications, Command Summary, and Character Tables