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21 Remote Controller (REMC)
21.1 Outline of the REMC
The S1C17704 is equipped with a remote controller (REMC) module for generating/receiving infrared remote
control signals. The REMC module consists of a carrier generator for generating a carrier signal using a prescaler
output clock, an 8-bit down counter for counting the transmit/receive data length, a modulator for generating
transmit data with a designated carrier length, and an edge detector for detecting rising and falling edges from the
input signal.
Also the REMC module can generate three types of interrupts: counter underflow interrupt to notify that a
transmission for designated data length has finished, and input rising edge detection and falling edge detection
interrupts for data receive processing.
Figure 21.1.1 shows the structure of the REMC module.
PCLK•1/1–1/16K
Prescaler
Internal bus
ITC
S1C17704 TECHNICAL MANUAL
Carrier generator
Bus I/F
and
control
registers
Data length counter
Interrupt
control
Figure 21.1.1 Structure of REMC Module
21 REMOTE CONTROLLER (REMC)
Remote controller
Modulator
Edge detector
EPSON
REMO (P05)
REMI (P04)
21-1
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