参数资料
型号: XR20V2170IL40-F
厂商: Exar Corporation
文件页数: 29/49页
文件大小: 0K
描述: IC UART/TXRX I2C/SPI RS232 40QFN
标准包装: 490
特点: *
通道数: 1,UART
FIFO's: 64 字节
规程: RS232
电源电压: 2.97 V ~ 3.63 V
带自动流量控制功能:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 40-VFQFN 裸露焊盘
供应商设备封装: 40-QFN 裸露焊盘(6x6)
包装: 托盘
其它名称: 1016-1478
XR20V2170IL40-F-ND
XR20V2170
35
REV. 1.0.1
I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
EFR[6]: Auto RTS Flow Control Enable
RTS# output may be used for hardware flow control by setting EFR bit-6 to logic 1. When Auto RTS is
selected, an interrupt will be generated when the receive FIFO is filled to the programmed trigger level and
RTS de-asserts HIGH at the programmed HALT level. RTS# will return LOW when FIFO data falls below the
programmed RESUME level. The RTS# output must be asserted (LOW) before the auto RTS can take effect.
RTS# pin will function as a general purpose output when hardware flow control is disabled.
Logic 0 = Automatic RTS flow control is disabled (default).
Logic 1 = Enable Automatic RTS flow control.
EFR[7]: Auto CTS Flow Control Enable
Automatic CTS Flow Control.
Logic 0 = Automatic CTS flow control is disabled (default).
Logic 1 = Enable Automatic CTS flow control. Data transmission stops when CTS# input de-asserts HIGH.
Data transmission resumes when CTS# returns LOW.
4.21.1
Software Flow Control Registers (XOFF1, XOFF2, XON1, XON2) - Read/Write
These registers are used as the programmable software flow control characters xoff1, xoff2, xon1, and xon2.
For more details, see Table 8.
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