參數(shù)資料
型號(hào)： XR16M654IV-0A-EVB
廠商： Exar Corporation
文件頁(yè)數(shù)： 16/58頁(yè)
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR16M654-A 64LQFP
標(biāo)準(zhǔn)包裝： 1
系列： *
XR16M654/654D
23
REV. 1.0.0
1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
2.16
Infrared Mode
The M654 UART includes the infrared encoder and decoder compatible to the IrDA (Infrared Data Association)
version 1.0. 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. This signal encoding reduces the on-time of the infrared LED,
hence reduces the power consumption. See Figure 13 below.
The infrared encoder and decoder are enabled by setting MCR register bit-6 to a ‘1’. When the infrared feature
is enabled, the transmit data output, TX, idles at logic zero level. Likewise, the RX input assumes an idle level
of logic zero from a reset and power up, see Figure 13.
Typically, 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.
FIGURE 13. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
Character
Data Bits
Star
t
St
o
p
00
0
11
1
Bit Time
1/16 Clock Delay
IRdecoder-1
RX Data
Receive
IR Pulse
(RX pin)
Character
Data Bits
Sta
rt
St
op
00
0
11
1
TX Data
Transmit
IR Pulse
(TX Pin)
Bit Time
1/2 Bit Time
3/16 Bit Time
IrEncoder-1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16M654IV-0B-EVB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M654IV-0B RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
XR16M654IV64 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
XR16M654IV64-F 功能描述:UART 接口集成電路 1.62V-3.63V QUAD UART W/64BYTE FIFO 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
XR16M654IV64TR-F 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 1.8V/2.5V/3.3V 64-Pin LQFP T/R
XR16M654IV80 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
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