Casio EX-468 - Page 29

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5-8. I/O CONTROLLER (IC21)
5-8-1. Pin Function
P00 INTP0 HCTS I I I U - CTS from HOST
P01 INTP1 R Head up I I I U
P02 INTP2 J Head up I I I U
P03 INTP3 DKIN I I I U - Input DALLAS KEY
P04 INTP4 R no paper I I I U -
P05 INTP5 J no paper I I I U -
P06 INTP6 HDSR I I I U - DSR from HOST
P10 ANI0 VP search I I I AN
P11 ANI1 Thermister H I I I AN
P12 ANI2 Thermister J I I I AN
P13 ANI3 DSTS0 I I I U - DRAWER STS0
P14 ANI4 DSTS1 I I I U - DRAWER STS1
P15 ANI5 PrinterTBLSel I I I U + Printer TBL select switch
P16 ANI6 DSTS2 I I I U - DRAWER STS2
P17 ANI7 DSTS3 I I I U - DRAWER STS3
P20 RxD1 HRXD I I I U - RxD from HOST
P21 TxD1 HTXD I O I U - TxD from HOST
P22 ASCK1 HCLK I I I U - CLK (4Mhz) from HOST
P23 PCL HDTR I O I U - DTR to HOST
P24 BUZ HRTS I O I U - RTS to HOST
P25 SI0 KEY TYPE0 I I I U + KEYboard TYPE 0
P26 SO0 Printer SO I O I U - SO to printer
P27 SCK0 Printer SCK I O I U - CLK to printer
P30 TO0 KC 0 I O I U -
P31 TO1 KC 1 I O I U -
P32 TO2 KC 2 I O I U -
P33 TI1 KC 3 I O I U -
P34 TI2 KC 4 I O I U -
P35 TIO0 KC 5 I O I U -
P36 TIO1 KC 6 I O I U -
P37 KC 7 I O I U -
P40 AD0 I O I U - LED Latch 0
P41 AD1 I O I U - LED Latch 1
P42 AD2 I O I U - LED Latch 2
P43 AD3 DKOUT I O I U + DALLAS KEY output
P44 AD4 CUTTER RESET I I I U + Cutter RESET
P45 AD5 VP ON I O I U +
Printer VP ON
P46 AD6 R STEP MOTOR I O I U - STEP MOTOR IO
P47 AD7 J STEP MOTOR I O I U - STEP MOTOR IO
P50 A8 KI0 I I I U -
P51 A9 KI1 I I I U -
P52 A10 KI2 I I I U -
P53 A11 KI3 I I I U -
P54 A12 KI4 I I I U -
P55 A13 KI5 I I I U -
P56 A14 KI6 I I I U -
P57 A15 KI7 I I I U -
KEY input
(MODE input)
CommnetFunction
KEY common
output
LED
Control
Logic
Initial Normal
Power Failure
I/O
Port CircuitConvertible terminal