Citizen Systems CD-S500 Betriebsanweisung
49
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
FG
FG
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
E
F
C
∗ACK
∗STROBE
BUSY
A : MIN. 1
µs
B : MIN. 1
µs
C : MIN. 1
µs
D : MAX. 1
µs
E : Approx. 3.2
µs
F : Approx. 3.2
µs
Data Reception Timing
Appendix
es