Samsung 8-Bit CMOS Microcontroller Microcassette Recorder User Manual


  Open as PDF
of 462
 
S3C9228/P9228 CONTROL REGISTERS
4-21
P1EDGE –Port 1 Interrupt Edge Selection Register F2H
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
RESETRESET Value
– – – – 0 0 0 0
Read/Write
– – – – R/W R/W R/W R/W
.7-.4
Not used for S3C9228/P9228
.3
P1.3's Interrupt Edge Setting Bit
0 Falling edge interrupt
1 Rising edge interrupt
.2
P1.2's Interrupt State Setting Bit
0 Falling edge interrupt
1 Rising edge interrupt
.1
P1.1's Interrupt State Setting Bit
0 Falling edge interrupt
1 Rising edge interrupt
.0
P1.0's Interrupt State Setting Bit
0 Falling edge interrupt
1 Rising edge interrupt
 previous next