Interface Signals - Epson TM-L90 Developer's Manual

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Interface Signals

Connector Pin Assignment
Pin Source
1 Host
2 Host/Ptr
3 Host/Ptr
4 Host/Ptr
5 Host/Ptr
6 Host/Ptr
7 Host/Ptr
8 Host/Ptr
9 Host/Ptr
10 Printer
11 Printer
12 Printer
13 Printer
14 Host
15
16
17
18 Printer
19
20
21
22
23
24
25
26
27
28
29
30
31 Host
32 Printer
33
34 Printer
35 Printer
36 Host
*NC : None Connect
ND : Not Defined
Note:
A signal name prefixed by "n" indicates an "L" active signal.
A-6 Interface And Connectors
Compatibility Mode
nStrobe
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
nAck
Busy
Perror
Select
nAutoFd
NC
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nFault
GND
DK_STATUS
+5V
nSelectIn
Nibble Mode
HostClk
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
PtrClk
PtrBusy/Data3,7
AckDataReq/Data2,6
Xflag/Data1,5
HostBusy k
ND
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nDataAvail/Data0,4
ND
ND
ND
1284-Active
Byte Mode
HostClk
Data0(LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7(MSB)
PtrClk
PtrBusy
AckDataReq
Xflug
HostBusy
ND
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nInit
nDataAvail
ND
ND
ND
1284-Ative
Rev. A