User's Manual
D-4
INTERFACE INFORMATION
Nibble Mode
Pin numbers 2 to 9, 15 to 31, and 33 to 35 are the same as the conventional
mode.
Pin
Return
Signal
Direc-
Description
No. Pin No.
name
tion
1
19
Host Clock
Input
This signal is set high when the
host requests the reverse data
transfer phase (nibble mode).
10
28
Printer Clock
Output
Reverse data transfer phase:
This signal goes high when data
being sent to the host is estab-
lished.
Reverse idle phase:
This signal is set low then goes
high to interrupt the host,
indicating that data is available.
11
29
Printer Busy
Output
Reverse data transfer phase:
Data bit 3, data bit 7, then
forward path (host to printer)
busy status
12
30
Ack Data Req
Output
Reverse data transfer phase:
Data bit 2, then data bit 6
Reverse idle phase:
This signal is set high until the
host requests data and, after that,
follows the Data Available signal.
13
–
X Flag
Output
Reverse data transfer phase:
Data bit 1, then data bit 5
Summary of Contents for 2248
Page 1: ...User Guide Matrix Printer ...
Page 14: ...User s Manual xii ...
Page 46: ...SETTING UP 2 28 User s Manual ...
Page 66: ...PAPERHANDLING User s Manual 3 20 ...
Page 134: ...USING SETUP MODE User s Manual 5 60 ...
Page 136: ...USING SETUP MODE User s Manual 5 62 ...
Page 158: ...INSTALLING OPTIONS 8 2 User s Manual ...
Page 160: ...SUPPLIES AND OPTIONS A 2 User s Manual ...
Page 170: ...PRINTER AND PAPER SPECIFICATIONS B 10 User s Manual ...
Page 188: ...C 18 User s Manual COMMAND SETS ESC P2 ...
Page 203: ...User s Manual E 3 CHARACTER SETS Character Sets Graphics Character Set 2 ...
Page 211: ...User s Manual E 11 CHARACTER SETS Character Sets MIK MACEDON Macedonian ABG ABY ...
Page 212: ...E 12 User s Manual CHARACTER SETS DECGR GREEK 11 PG MAC ELOT927 ...
Page 213: ...User s Manual E 13 CHARACTER SETS Character Sets PAGE862 HBR OLD HBR DEC ISO TUK ...
Page 214: ...E 14 User s Manual CHARACTER SETS LATIN 9 RUSCII ...
Page 218: ...E 18 User s Manual CHARACTER SETS NORWEGN Norwegian FRENCH French DANISH2 Danish2 KOREA Korea ...
Page 219: ...User s Manual E 19 CHARACTER SETS Character Sets LEGAL Legal ...
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