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参数资料
| 型号： | XR17V354IB-E8-EVB |
| 厂商： | Exar Corporation |
| 文件页数： | 49/66页 |
| 文件大小： | 0K |
| 描述： | EVAL BRD FOR XR17V354-E8 176BGA |
| 产品培训模块： | PCIe UARTs |
| 标准包装： | 1 |
| 主要目的： | 接口，UART |
| 嵌入式： | 否 |
| 已用 IC / 零件： | XR17V354 |
| 已供物品： | 板 |
| 其它名称： | 1016-1613 XR17V354IB-E8-EVB-ND |
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XR17V354
53
REV. 1.0.3
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
MCR[7]: Clock Prescaler Select (requires EFR bit [4]=1)
Logic 0 = Divide by one. The internal 125MHz clock (master) or 62.5MHz clock (slave) 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 internal 125MHz clock (master) or 62.5MHz clock (slave)
by 4 and feeds it to the Programmable Baud Rate Generator, hence, data rates become one forth.
MCR[6]: Infrared Encoder/Decoder Enable (requires EFR bit [4]=1)
The state of this bit depends on the sampled logic level of pin ENIR during power up, following a hardware
reset (rising edge of RST# input). Afterward user can override this bit for desired operation.
Logic 0 = Enable the standard modem receive and transmit character interface.
Logic 1 = Enable infrared IrDA receive and transmit inputs/outputs. While in this mode, the TX/RX output/
input are routed to the infrared encoder/decoder. The data input and output levels will conform to the IrDA
infrared interface requirement. As such, while in this mode the infrared TX output will be a LOW during idle
data conditions. FCTR bit [4] may be selected to invert the RX input signal level going to the decoder for
infrared modules that provide rather an inverted output. For exact 3/16 or 1/4 bit wide pulse, the 16X
sampling rate must be used and DLD[3:0] = ’0000’. If DLD[3:0] is not ’0000’, the pulse width can vary.
MCR[5]: Xon-Any Enable (requires EFR bit [4]=1)
Logic 0 = Disable Xon-Any function (default).
Logic 1 = Enable Xon-Any function. In this mode any RX character received will enable Xon, resume data
transmission.
MCR[4]: Internal Loopback Enable
Logic 1 = Disable loopback mode (default).
Logic 1 = Enable local loopback mode, see loopback section and Figure 12.
MCR[3]: Send Char Immediate (OP2 in Local Loopback Mode)
This bit is used to transmit a character immediately irrespective of the bytes currently in the transmit FIFO. The
data byte must be loaded into the transmit holding register (THR) immediately following the write to this bit (to
set it to a ’1’). In other words, no other register must be accessed between setting this bit and writing to the
THR. The loaded byte will be transmitted ahead of all the bytes in the TX FIFO, immediately after the character
currently being shifted out of the transmit shift register is sent out. The existing line parameters (parity, stop
bits) will be used when composing the character. This bit is self clearing, therefore, must be set before sending
a custom character each time. Please note that the Transmitter must be enabled for this function (MSR[3] = 0).
Also, if software flow control is enabled, the software flow control characters (Xon, Xoff) have higher priority
and will get shifted out before the custom byte is transmitted.
Logic 0 = Send Char Immediate disabled (default).
Logic 1 = Send Char Immediate enabled.
In Local Loopback Mode (MCR[4] = 1), this bit acts as the legacy OP2 output and controls the CD bit in the
MSR register as shown in Figure 12. Please make sure that this bit is a ’0’ when exiting the Local Loopback
Mode.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR17V358 | 制造商:EXAR 制造商全称:EXAR 功能描述:HIGH PERFORMANCE OCTAL PCI EXPRESS UART |
| XR17V358IB-0A-EVB | 功能描述:界面开发工具 Eval Board for XR17V358IB-0A 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 |
| XR17V358IB176-F | 功能描述:UART 接口集成电路 8 Channel PCIe UART w/256 Byte FIFO 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 |
| XR17V358IB176-F | 制造商:Exar Corporation 功能描述:IC OCTAL UART 25MBPS 3.6V 176-BGA |
| XR17V358IB-E4-EVB | 功能描述:界面开发工具 Eval Board for XR17V358IB-E4 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 |
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