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參數(shù)資料
| 型號： | XR16V598IQ100-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 11/58頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 16B OCTAL 100QFP |
| 標準包裝： | 66 |
| 特點： | * |
| 通道數(shù)： | 8 |
| FIFO's： | 16 字節(jié) |
| 規(guī)程： | RS485 |
| 電源電壓： | 2.25 V ~ 3.6 V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 是 |
| 帶調制解調器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-BQFP |
| 供應商設備封裝： | 100-QFP（14x20） |
| 包裝： | 托盤 |
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XR16V598
19
REV. 1.0.3
2.25V TO 3.6V HIGH PERFORMANCE OCTAL UART WITH 16-BYTE FIFO
2.14
Infrared Mode
Each UART in the 598 includes the infrared encoder and decoder compatible to the IrDA (Infrared Data
Association) version 1.0. The input pin ENIR conveniently activates all 8 UART channels to start up in the
infrared mode. Note that the ENIR pin is sampled when the RST# input is de-asserted. This global control pin
enables the MCR bit-6 function in every UART channel register. After power up or a reset, the software can
overwrite MCR bit-6 if so desired. ENIR and MCR bit-6 also disable the receiver while the transmitter is
sending data. This prevents echoed data from reaching the receiver. The global activation ENIR pin prevents
the infrared emitter from turning on and drawing large amount of current while the system is starting up. When
the infrared feature is enabled, the transmit data outputs, TX[7:0], would idle at logic zero level. Likewise, the
RX [7:0] inputs assume an idle level of logic zero.
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
below.
The infrared decoder receives the input pulse from the infrared sensing diode on RX pin. Each time it senses a
light pulse, it returns a logic zero to the data bit stream. The decoder also accepts (when FCTR bit-4 = 1) an
inverted IR-encoded input signal. This option supports active LOW instead of normal active HIGH pulse from
some infrared modules on the market.
FIGURE 10. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
Character
Data Bits
Start
Stop
00
0
11
1
Bit Time
1/16 Clock Delay
IRdecoder-
RX Data
Receive
IR Pulse
(RX pin)
Character
Data Bits
Sta
rt
Stop
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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XR16V654 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO |
| XR16V654_0709 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO |
| XR16V654D | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO |
| XR16V654DIV | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16V654DIV-0A-EB | 功能描述:UART 接口集成電路 Supports V654 64 ld LQFP, ISA Interface 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 |
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