Appendix C: Parallel Interface; C-1. Table Of Connection Signals For Each Mode - Star Micronics SP500 Series User Manual

The two-way parallel interface is compatible with the IEEE1284 compatibility
mode and nibble mode.

C-1. Table of Connection Signals for Each Mode

Pin No. Direction
1 In
2 In
3 In
4 In
5 In
6 In
7 In
8 In
9 In
10 Out
11 Out
12 Out
13 Out
14 In
15
16
17
18 OUT
19
20
21
22
23
24
25
26
27
28
29
30

Appendix C: Parallel Interface

Compatibility Mode
Signal Name
nStorobe
Data0
Data1
Data2
Data3
Data4
Data5
Data6
Data7
nAck
Busy
PError
Select
nAutoFd
N/C
GND
Flame GND
Logic High
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
– 109 –
Nibble Mode
Signal Name
HostClk
Data0
Data1
Data2
Data3
Data4
Data5
Data6
Data7
PtrClk
PtrBusy/Data3,7
AckDataReq/Data2,6
Xflag/Data1,5
HostBusy
—
GND
Flame GND
Logic High
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND