Operation Flow Of Type A Reception Mode - NEC PD789488 User Manual

CHAPTER 15 REMOTE CONTROLLER RECEIVER (
Set compare registers
Operation enabled
Note
Read RMDR
No
: Software processing
(User executes via program)
: Hardware processing
(Macro automatically performs)
Note Read RMDR before data has been set to all the bits of RMSR.
280
Figure 15-5. Operation Flow of Type A Reception Mode
Start
(RMEN = 1)
No
Guide pulse high
level width OK?
Yes
Generate INTGP
No
Data low level
width OK?
Yes
No
Data high level
width OK?
Yes
Set data to RMSR
Yes
Set data to all bits
of RMSR OK?
Yes
RMSR → RMDR
Generate INTDFULL
Clear RMSR
User's Manual U15331EJ4V1UD
µ
PD789489, 78F9489 ONLY)
Generate
Clear RMSR and RMSCR
No
Longer than END
interval?
Yes
Generate INTREND
Read RMSCR
Read RMSR
Clear RMSR and RMSCR
Process received data
No
Receive operation
completed
Yes
Terminate operation (RMEN = 0)
Clear RMSR, RMSCR,
and RMDR
END
INTRERR