參數(shù)資料
型號: IT8673F
廠商: Electronic Theatre Controls, Inc.
英文描述: GT 35C 35#12 SKT PLUG
中文描述: 先進的輸入/輸出(高級I / O)的初步規(guī)范V0.5
文件頁數(shù): 108/128頁
文件大?。?/td> 780K
代理商: IT8673F
IT8673F
11.8 Consumer Remote Control (TV Remote) IR (CIR)
11.8.1 Overview
The CIR is used in Consumer Remote Control equipment, and is a programmable amplitude shift keyed (ASK)
serial communication protocol. By adjusting frequencies, baud rate divisor values and sensitivity ranges, the
CIR registers are able to support the popular protocols such as RC-5, NEC, and RECS-80. Software driver
programming can support new protocols.
11.8.2 Features
Supports 30 kHz-57 kHz (low frequency) or 400 kHz-500 kHz (high frequency) carrier transmission
Baud rates up to 115200 BPS (high frequency)
Demodulation optional
Supports transmission run-length encoding and deferral functions
32-byte FIFO for data transmission or data reception
11.8.3 Block Diagram
The CIR consists of the Transmitter and Receiver parts. The Transmitter part is responsible for transmitting
data to the FIFO, processing the FIFO data by serialization, modulation and sending out the data through the
LED device. The Receiver part is responsible for receiving data, processing data by demodulation,
deserialization and storing data in the Receiver FIFO.
8
Interrupt Gen.
Interface &
Registers
Baud Rate Gen.
Demodulator
Deserialization
Receiver
FIFO
Modulator
Serialization
Transmitter
FIFO
Transmitter
Receiver
Host Interface
00000000
11110000
00000000
11110000
data
data
Figure 11-2. CIR Block Diagram
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