Electronics America Single-Chip Microcontrollers User's Manual

CHAPTER 15 REMOTE CONTROLLER RECEIVER ( µ PD789489, 78F9489 ONLY)
User’s Manual U15331EJ4V1UD
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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
∆