Table A-2. Connector Pin Assignments — CN1
Pin I/O Name Description
1I
STB / Host Clk STROBE signal / Clock signal (Host)
2-9 I DATA1-8 Data strobe signal
10 O
ACK / Ptr Clk ACK signal / Clock signal (Printer)
11
O
BUSY / Ptr Busy (Data
Bit-3, 7)
Busy signal / Printer busy signal and reverse
channel transfer data bits 3, 7
12 O
PE / Ack Data Req
(Data Bit-2, 6)
Paper end signal / ACK data request signal
and reverse channel transfer data bits 2, 6
13 O
SLCT / Xflag
(Data Bit-1, 5)
Printer select signal / X-flag signal and reverse
channel data bit 1, 5
14 I AFXT / Host Busy Auto line feed signal / Host busy signal
15 — NC Not connected
16 — GND Ground
17 — FG Frame ground
18 O Logic-H
Pulled up to +5 V through 3.9K Ω / A HIGH
signal indicates that all other signals sourced
by the peripheral are in valid status
19-30 — GND Ground
31 I INIT INIT signal
32 O
ERR / Data Avail
(Data Bit-0, 4)
Error signal / Data available signal and reverse
channel transfer data bit 0, 4
33 — GND Ground
34 — NC Not connected
35 O +5 V
Pulled up to +5 V through 3.3K Ω
36 I
SLIN / 1284-Active Not used / 1284 active signal
STYLUS PRO XL+ Service Manual Appendix
Rev.A A-3
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