Oki OKIPOS 441J USBBlack Users Guide - Page 53

Parallel Interface

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12. Parallel Interface The two-way parallel interface is compatible with the IEEE1284 compatibility mode and nibble mode. 12-1. Table of Connection Signals for Each Mode Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Direction In In In In In In In In In Out Out Out Out In Out 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 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 - 49 -

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12. Parallel Interface
The two-way parallel interface is compatible with the IEEE±²µ4 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
±
In
nStorobe
HostClk
²
In
Data0
Data0
³
In
Data±
Data±
4
In
Data²
Data²
5
In
Data³
Data³
6
In
Data4
Data4
´
In
Data5
Data5
µ
In
Data6
Data6
In
Data´
Data´
±0
Out
nAck
PtrClk
±±
Out
Busy
PtrBusy/Data³,´
±²
Out
PError
AckDataReq/Data²,6
±³
Out
Select
Xflag/Data±,5
±4
In
nAutoFd
HostBusy
±5
N/C
—
±6
GND
GND
±´
Flame GND
Flame GND
±µ
Out
Logic High
Logic High
±¶
GND
GND
²0
GND
GND
²±
GND
GND
²²
GND
GND
²³
GND
GND
²4
GND
GND
²5
GND
GND
²6
GND
GND
²´
GND
GND
²µ
GND
GND
²¶
GND
GND
³0
GND
GND