參數(shù)資料
型號(hào)： XR20M1172IG28-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 15/55頁(yè)
文件大?。?/td> 0K
描述： IC UART FIFO I2C/SPI 64B 28TSSOP
產(chǎn)品培訓(xùn)模塊： UART Product Overview
標(biāo)準(zhǔn)包裝： 50
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 64 字節(jié)
規(guī)程： RS485
電源電壓： 1.62 V ~ 3.63 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類(lèi)型： 表面貼裝
封裝/外殼： 28-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 28-TSSOP
包裝： 管件
其它名稱(chēng)： 1016-1298-5
XR20M1172
22
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
REV. 1.2.0
2.15
Infrared Mode
The M1172 UART includes the infrared encoder and decoder compatible to the IrDA (Infrared Data
Association) version 1.0 and 1.1. The IrDA 1.0 standard that stipulates the infrared encoder sends out a 3/16 of
a bit wide HIGH-pulse for each “0” bit in the transmit data stream with a data rate up to 115.2 Kbps. For the
IrDA 1.1 standard, the infrared encoder sends out a 1/4 of a bit time wide HIGH-pulse for each "0" bit in the
transmit data stream with a data rate up to 1.152 Mbps. This signal encoding reduces the on-time of the
infrared LED, hence reduces the power consumption. See Figure 18 below.
The infrared encoder and decoder are enabled by setting MCR register bit-6 to a ‘1’. With this bit enabled, the
infrared encoder and decoder is compatible to the IrDA 1.0 standard. For the infrared encoder and decoder to
be compatible to the IrDA 1.1 standard, EFCR bit-7 will also need to be set to a ’1’. When the infrared feature
is enabled, the transmit data output, TX, idles LOW. Likewise, the RX input also idles LOW, see Figure 18.
The wireless infrared decoder receives the input pulse from the infrared sensing diode on the RX pin. Each
time it senses a light pulse, it returns a logic 1 to the data bit stream.
The UART can be in the infrared mode upon power-up if the ENIR# pin is LOW. After power-up, the infrared
mode can be controlled via MCR bit-6.
FIGURE 18. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
Character
Data Bits
S
ta
rt
S
to
p
0
1
TX Data
Transmit
IR Pulse
(TX Pin)
Bit Time
1/2 Bit Time
3/16 or 1/4
Bit Time
IrEncoder-1
Character
Data Bits
S
ta
rt
S
to
p
0
1
Bit Time
1/16 Clock Delay
IRdecoder-1
RX Data
Receive
IR Pulse
(RX pin)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR20M1172IG28-F 制造商:Exar Corporation 功能描述:IC DUAL UART 16MBPS 3.63V 28-TSSOP 制造商:Exar Corporation 功能描述:IC, DUAL UART, 16MBPS, 3.63V, 28-TSSOP
XR20M1172IG28TR-F 功能描述:UART 接口集成電路 1.8V 2 Ch 64-byte I2C/SPI UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR20M1172IL32 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
XR20M1172IL32-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR20M1172IL32-F 制造商:Exar Corporation 功能描述:IC DUAL UART 16MBPS 3.63V 32-QFN
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