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参数资料
| 型号： | XR20V2170IL40-F |
| 厂商： | Exar Corporation |
| 文件页数： | 21/49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： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 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 |
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XR20V2170
28
I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
REV. 1.0.1
MCR[2]: OP1# / TCR and TLR Enable
OP1# is not available as an output pin on the V2170. But it is available for use during Internal Loopback Mode
(MCR[4] = 1). In the Internal Loopback Mode, this bit is used to write the state of the modem RI# interface
signal.
This bit is also used to select between the MSR and TCR registers at address offset 0x6 and the SPR and TLR
registers at address offset 0x7. Table 12 and Table 13 below shows how these registers are accessed.
TABLE 12: REGISTER AT ADDRESS OFFSET 0X6
EFR[4] MCR[2] Register at Address Offset 0x6
0
X
Modem Status Register (MSR)
1
0
Modem Status Register (MSR)
1
Trigger Control Register (TCR)
TABLE 13: REGISTER AT ADDRESS OFFSET 0X7
EFR[4] MCR[2] Register at Address Offset 0x7
0
X
Scratchpad Register (SPR)
1
0
Scratchpad Register (SPR)
1
Trigger Level Register (TLR)
MCR[3]: OP2# Output
OP2# is not available as an output on the V2170 but can be controlled in internal loopback mode.
Logic 0 = OP2# output set HIGH(default).
Logic 1 = OP2# output set LOW.
MCR[4]: Internal Loopback Enable
Logic 0 = Disable loopback mode (default).
Logic 1 = Enable local loopback mode, see loopback section and Figure 13.
MCR[5]: Xon-Any Enable (requires EFR bit-4=1 to write to this bit)
Logic 0 = Disable Xon-Any function (default).
Logic 1 = Enable Xon-Any function. In this mode, any RX character received will resume transmit operation.
The RX character will be loaded into the RX FIFO, unless the RX character is an Xon or Xoff character and
the V2170 is programmed to use the Xon/Xoff flow control.
MCR[6]: Reserved
MCR[7]: Clock Prescaler Select (requires EFR bit-4=1 to write to this bit)
Logic 0 = Divide by one. The input clock from the crystal or external clock is fed directly to the Programmable
Baud Rate Generator without further modification, i.e., divide by one (default).
Logic 1 = Divide by four. The prescaler divides the input clock from the crystal or external clock by four and
feeds it to the Programmable Baud Rate Generator, hence, data rates become one forth.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR20V2170L40-0A-EB | 功能描述:界面开发工具 Supports V2170 40pin QFN,I2C Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| XR20V2170L40-0B-EB | 功能描述:UART 接口集成电路 Supports V2170 40pin QFN,SPI Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR20V2172 | 制造商:EXAR 制造商全称:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER |
| XR20V2172_08 | 制造商:EXAR 制造商全称:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER |
| XR20V2172IL64 | 制造商:EXAR 制造商全称:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER |
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