Mitsubishi DS907x SIP User Manual page 91

global enable bit. It can only be enabled or disabled
using the EPFW bit.
Simulated Interrupts
Except for PFW, any interrupt can be forced by setting
the corresponding flag to a logic 1 in software. This
INTERRUPT REQUEST SOURCES Figure 11–1
V
CC
INT0
TIMER 0
OVERFLOW
INT1
TIMER 1
OVERFLOW
SERIAL WORD TRANSMIT
SERIAL WORD RECEIVED
V
PFW
THRESHOLD
DETECTOR
0
IT0
1 TO 0
1
TRANSITION
DETECTOR
0
IT1
1 TO 0
1
TRANSITION
DETECTOR
91
causes the code to jump to the appropriate interrupt
vector. Clearing the appropriate flag manually will clear
a pending interrupt. Note that the PFW flag can not be
written by software.
USER'S GUIDE
PFW
IEO
TFO
IE1
TF1
SERIAL INTERRUPT
TI
RI
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