參數(shù)資料
型號(hào)： MCP2140
廠商： Microchip Technology Inc.
英文描述： IrDA Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate(固定波特率,低成本,IrDA標(biāo)準(zhǔn)協(xié)議編譯碼器)
中文描述： 標(biāo)準(zhǔn)的IrDA協(xié)議?？刂破鳎潭ㄍㄐ潘俾?600波特（固定波特率，低成本，紅外標(biāo)準(zhǔn)協(xié)議編譯碼器）
文件頁(yè)數(shù)： 11/58頁(yè)
文件大?。?/td> 1001K
代理商： MCP2140
2003 Microchip Technology Inc.
Preliminary
DS21790A-page 11
MCP2140
2.5
Encoder/Decoder
The encoder converts the UART format data into the
IrDA Standard format data and the decoder converts
IrDA Standard format data into UART format data.
2.5.1
ENCODER (MODULATION)
The data that the MCP2140 UART received (on the TX
pin) that needs to be transmitted (on the TXIR pin) will
need to be modulated. This modulated signal drives the
IR transceiver module.
Figure 2-5
shows the encoding
of the modulated signal.
Each bit time is comprised of 16-bit clocks. If the value
to be transmitted (as determined by the TX pin) is a
logic-low, the TXIR pin will output a low level for 7-bit
clock cycles, a logic high level for 3-bit clock cycles or
a minimum of 1.6 μsec (see
Parameter IR121
). The
remaining 6-bit clock cycles will be low. If the value to
transmit is a logic-high, the TXIR pin will output a low
level for the entire 16-bit clock cycles.
FIGURE 2-5:
ENCODING
Note:
The signal on the TXIR pin does not actu-
ally line up in time with the bit value that
was transmitted on the TX pin, as shown in
Figure 2-5
. The TX bit value is shown to
represent the value to be transmitted on
the TXIR pin.
BITCLK
TX Bit
Value
TXIR
0
1
0
0
0
1
16 CLK
7 CLK
Start Bit
Data bit 0
Data bit 1
Data bit 2
Data bit ...
24 Tosc
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP2140_03 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IrDA㈢ Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate
MCP2140_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IrDA?? Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate
MCP2140A 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IrDA㈢ Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate
MCP2140A-I/P 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced MCP2140 Win Mobile 5.0 compatble RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MCP2140A-I/SO 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced MCP2140 Win Mobile 5.0 compatble RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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