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CHAPTER 15 REMOTE CONTROLLER RECEIVER (
15.3 Registers to Control Remote Controller Receiver
The remote controller receiver is controlled by the following register.
• Remote controller receive control register (RMCN)
(1) Remote controller receive control register (RMCN)
This register is used to enable/disable remote controller reception and to set the noise elimination width, clock
internal division, input invert signal, and source clock.
RMCN is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets RMCN to 00H.
Figure 15-3. Format of Remote Controller Receive Control Register (1/2)
Symbol
7
6
RMCN
RMEN
NCW
RMEN
0
Disable remote controller reception
1
Enable remote controller reception
NCW
0
Eliminate noise less than 1/f
1
Eliminate noise less than 2/f
PRSEN
0
Clock not divided internally (f
1
Clock internally divided into two (f
RMIN
0
Input positive phase
1
Input negative phase
Cautions 1. Always set bits 2 and 3 to 0.
2. To change the values of NCW, PRSEN, RMIN, RMCK1, and RMCK0, disable remote
controller reception (RMEN = 0) first.
Remarks 1. f
: Source clock of remote controller counter (selected by bits 0 and 1 (RMCK0 and RMCK1)
REM
2. f
: Operation clock inside remote controller receiver
PRS
5
4
3
PRSEN
RMIN
0
Control of remote controller receive operation
Noise elimination width control signal
PRS
PRS
Internal clock division control signal
= f
)
PRS
REM
= f
PRS
REM
Remote controller input invert signal
User's Manual U15331EJ4V1UD
µ
PD789489, 78F9489 ONLY)
2
1
0
0
RMCK1
RMCK0
/2)
Address
After reset
R/W
FF60H
00H
R/W
277
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