NEC PD78F9488 - Manual (Page 280)

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