REV. 1.1.0 I2C/SPI UART WITH 64-BYTE FIFO EFCR[6]: Reserved EFCR[5]: Auto RS-485 Polarity Inversion This bit changes the polarity " />
參數(shù)資料
型號： XR20M1170IG16
廠商： Exar Corporation
文件頁數(shù)： 31/56頁
文件大小： 0K
描述： IC UART FIFO I2C/SPI 64B 16TSSOP
產品變化通告： Leaded UART, V&I Obsolescence 11/Apr/2011
標準包裝： 95
特點： *
通道數(shù)： 1，UART
FIFO's： 64 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
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 16-TSSOP（0.173"，4.40mm 寬）
供應商設備封裝： 16-TSSOP
包裝： 管件
XR20M1170
37
REV. 1.1.0
I2C/SPI UART WITH 64-BYTE FIFO
EFCR[6]: Reserved
EFCR[5]: Auto RS-485 Polarity Inversion
This bit changes the polarity of the Auto RS-485 Half-Duplex Direction Control output (RTS#). This bit will only
affect the behavior of the RTS# output if EFCR[4] = 1. See “Section 2.14, Auto RS485 Half-duplex Control”
on page 18 for complete details.
Logic 0 = RTS# output is LOW when transmitting and HIGH when receiving.
Logic 1 = RTS# output is HIGH when transmitting and LOW when receiving.
EFCR[4]: Auto RS-485 Enable
This bit enables the RTS# output as the Auto RS-485 Half-Duplex Direction Control output. See “Section
Logic 0 = RTS# output can be used for Auto RTS Hardware Flow Control or as a general purpose output.
Logic 1 = RTS# output enabled as the Auto RS-485 Half-Duplex Direction Control output.
EFCR[3]: Reserved
EFCR[2]: Transmitter Disable
UART does not send serial data out on the TX output pin, but the TX FIFO will continue to receive data from
CPU until full. Any data in the TSR will be sent out before the trasnmitter goes into disable state.
Logic 0 = Transmitter is enabled
Logic 1 = Transmitter is disabled
EFCR[1] = Receiver Disable
UART will stop receiving data immediately once this bit is set to a Logic 1. Any data that is being received in
the TSR will be received correctly and sent to the RX FIFO.
Logic 0 = Receiver is enabled
Logic 1 = Receiver is disabled
EFCR[0]: 9-bit or Multidrop Mode Enable
This bit enables 9-bit or Multidrop mode. See “Section 2.14, Auto RS485 Half-duplex Control” on page 18
for complete details.
Logic 0 = Normal 8-bit mode
Logic 1 = Enable 9-bit or Multidrop mode
4.20
Baud Rate Generator Registers (DLL, DLM and DLD[3:0]) - Read/Write
These registers make-up the value of the baud rate divisor. The concatenation of the contents of DLM and
DLL is a 16-bit value is then added to DLD[3:0]/16 to achieve the fractional baud rate divisor. DLD must be
enabled via EFR bit-4 before it can be accessed. SEE”PROGRAMMABLE BAUD RATE GENERATOR WITH
DLD[5:4]: Sampling Rate Select
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相關代理商/技術參數(shù)
參數(shù)描述
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XR20M1170IG16-F 制造商:Exar Corporation 功能描述:IC SGL UART 16MBPS 3.63V 16-TSSOP 制造商:Exar Corporation 功能描述:IC, SGL UART, 16MBPS, 3.63V, 16-TSSOP
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XR20M1170IG24 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
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