MITSUBISHI ELECTRIC P91DW - Manual (Page 24)

21
Pin No. Return
pin No.
Signal From/To Function
1 19 HostClk PC/DP High
Unknown
Sends data in “Low” when HostBusy is “Low”. After HostBusy
turns “High”, this signal becomes “High”.
High: DP is on BUSY status.
Low: DP can send data.
Earth
PeripheralLogicHigh
Clears sending data to this unit. (Low) Incoming pulse width
should be 100
µ
s minimum.
Data1(LSB), Data5
Unused
Becomes “High” when DP requests each mode of IEEE1284.
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
2 - 9 20 - 27 Unknown
10 28 PrtClk
11 29 PtrBusy
12
Xflag 13
14
16•17
18
Earth 19 - 30
31
32
15•
33 - 35
36
HostBusy
GND
High
Init
GND
DataAvail
NC
1284 Active
16
Data4, Data8(MSB)
AckDataReq Data3, Data7
Data2, Data6
• Parallel input connector port
Signal allocation (Signal : Nibble)