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12. Parallel Interface
The two-way parallel interface is compatible with the IEEE1284 compatibility mode and nib-
ble mode.
12-1. Table of Connection Signals for Each Mode
Pin No. Direction
Compatibility Mode
Signal Name
Nibble Mode
Signal Name
1 In nStorobe HostClk
2 In Data0 Data0
3 In Data1 Data1
4 In Data2 Data2
5 In Data3 Data3
6 In Data4 Data4
7 In Data5 Data5
8 In Data6 Data6
9 In Data7 Data7
10
Out nAck PtrClk
11 Out Busy PtrBusy/Data3,7
12 Out PError AckDataReq/Data2,6
13 Out Select Xflag/Data1,5
14
In nAutoFd HostBusy
15
N/C —
16
GND GND
17 Flame GND Flame GND
18 Out Logic High Logic High
19 GND GND
20
GND GND
21 GND GND
22 GND GND
23 GND GND
24
GND GND
25
GND GND
26
GND GND
27 GND GND
28 GND GND
29 GND GND
30
GND GND