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Parallel (IEEE1284) Interface
PIN No. Direction
Function
Compatibility Mode
Nibble Mode Byte Mode
1 Input *Strobe HostCLK HostCLK
2 Input/Output Data0 Data0 Data0
3 Input/Output Data1 Data1 Data1
4 Input/Output Data2 Data2 Data2
5 Input/Output Data3 Data3 Data3
6 Input/Output Data4 Data4 Data4
7 Input/Output Data5 Data5 Data5
8 Input/Output Data6 Data6 Data6
9 Input/Output Data7 Data7 Data7
10 Output *ACK PtrCLK PtrCLK
11 Output BUSY PtrBUSY/Data3,7 PtrBUSY
12 Output PE AckDataReq/Data2,6 AckDataReq
13 Output SELECT Xflag/Data1,5 Xflag
14 Input *AutoFeed HostBUSY HostBUSY
15 – (NC) (ND) (ND)
16 – GND GND GND
17 – FG F G F G
18 Output Logic-H Logic-H Logic-H
19–30 – GND GND GND
31 Input *INIT *INIT *INIT
32 Output *FAULT *DataAvail/Data0,4 *DataAvail
33 – GND (ND) (ND)
34 Output DK_STATUS (ND) (ND)
35 Output +5V (ND) (ND)
36 Input *Select-in 1284-Active 1284-Active
(*: Active Low)
Pin assignment
Data 1–8
A
B
D
EF
C
∗ACK
∗STROBE
BUSY
A : MIN. 1µs
B : MIN. 1µs
C : MIN. 1µs
D : MAX. 1µs
E : Approx. 3.2µs
F : Approx. 3.2µs
Data Reception Timing
Appendixes