Fujitsu MB90480 Series Hardware Manual page 74

CHAPTER 3 INTERRUPT
❍ Extended intelligent I/O service (EI
S1, S0 bits are read-only bits. Whether the state is operating or terminated can be read by
confirming the S1, S0 bits value at the end of EI
Table 3.3-4 shows the relation between S1, S0 bit and EI
Table 3.3-4 Relationship between EI
S1
0
0
1
1
52
2
OS) status bit (S1, S0)
2
OS status bit and EI
S0
2
0 Operating EI OS or inactive
1 Stop due to end of counting
0 Unused
1 Stop due to generation of request from resource
2
OS. S1, S0 bits are initializes to "00
2
OS status.
2
OS state
2
EI OS state
" by reset.
B