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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Figure 15-3. Format of Remote Controller Receive Control Register (2/2)
Symbol 7 6 5 4 3 2 1 0 Address After reset R/W
RMCN RMEN NCW PRSEN RMIN 0 0 RMCK1 RMCK0 FF60H 00H R/W
RMCK1 RMCK0 Selection of source clock (fREM) of remote controller counter
0 0 fX/2
6
(625 kHz)
0 1 fX/2
7
(313 kHz)
1 0 fX/2
8
(156 kHz)
1 1 fXT (32.768 kHz)
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
X: Oscillation frequency of main system clock
2. fXT: Oscillation frequency of subsystem clock
3. The parenthesized values apply to operation at f
X = 4.0 MHz and fXT = 32.768 kHz.