NEC PD78F9488 - Manual (Page 281)

CHAPTER 15 REMOTE CONTROLLER RECEIVER ( µ PD789489, 78F9489 ONLY)
User’s Manual U15331EJ4V1UD
281
15.4.3 Timing
Operation varies depending on the positions of the RIN input waveform below.
(1) Guide pulse high level width determination
Relationship Between
RMGPHS/RMGPHL/Counter
Position of Waveform Corresponding Operation
Counter < PMGPHS <1>: Short Measuring guide pulse high-level width is started
from the next rising edge.
PMGPHS ≤ counter < PMGPHL <2>: Within the range INTGP is generated.
Data measurement is started.
PMGPHL ≤ counter <3>: Long Measuring guide pulse high-level width is started
from the next rising edge.
(2) Data low level width determination
Relationship Between RMDLS/RMDLL/Counter Position of Waveform Corresponding Operation
Counter < RMDLS <1>: Short Error interrupt INTRERR is generated.
Measuring guide pulse high-level width is started.
RMDLS ≤ counter < RMDLL <2>: Within the range Measuring data high-level width is started.
RMDLL ≤ counter <3>: Long Measuring the end width is started from the ∆ point.
RIN
RMGPHS
RMGPHL
Allowable
range
<1> <2> <3>
RIN
RIN
RIN
RMDLS
RMDLL
Allowable
range
<1> <2> <3>
RIN
RIN
∆