Epson TM-T70II Technical Reference Manual page 98

Interface signals
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
98
Compatibility Mode
Strobe HostClk
Data0 (LSB) Data0 (LSB)
Data1 Data1
Data2 Data2
Data3 Data3
Data4 Data4
Data5 Data5
Data6 Data6
Data7 (MSB) Data7 (MSB)
Ack
PtrClk
Busy PtrBusy/Data3,7
Perror AckDataReq/Data2,6
Select Xflag/Data1,5
AutoFd HostBusy
NC ND
GND GND
FG FG
Logic-H Logic-H
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
GND GND
Nibble Mode
HostClk
Data0 (LSB)
Data1
Data2
Data3
Data4
Data5
Data6
Data7 (MSB)
PtrClk
PtrBusy
AckDataReq
Xflag
HostBusy
ND
GND
FG
Logic-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Byte Mode