• Service Manuals |
  • Sharp |
  • Epos |
  • ER-A850 (serv.man2)

ER-A850 (serv.man2). ERA850 880 Service Manual - Sharp EPOS Service Manual (repair manual). Page 81

Read Sharp ER-A850 (serv.man2) Service Manual online

4-8. Host interface specifications
For interface with the main CPU, the asynchronous serial communi-
cation is employed. 
Signal names descriptions
/EVRQ
Event request signal to the host
/IORES
IOC1 reset signal from the host
HTS
Data line from the host to the sub
STH
Data line from the sub to the host
/SCK
External clock (P)
/CTS
Transfer enable signal from the sub
IOC interface signal pins 
Pin No.
Signal name
1 pin
GND
2 pin
GND
3 pin
IOTH
4 pin
HTIO
5 pin
NU (BAUD OUT)
6 pin
/EVRQ
7 pin
/CTS
8 pin
/IORES
9 pin
+5V
10 pin
+5V
IOTH
HTIO
/SCK (P)
/CTS
/EVRQ
/IORES
Gate array
   (PSC)
I/O
controller
+5V
GND
SW
BUZZ
MODE
MCR
Host side
interface
– 77 –
Page of 92
Display

Click on the first or last page to see other ER-A850 (serv.man2) service manuals if exist.

Random: