参数资料
型号: XR17V352IB113-F
厂商: Exar Corporation
文件页数: 52/64页
文件大小: 0K
描述: IC UART PCIE 256B DUAL 113FPBGA
产品培训模块: PCIe UARTs
标准包装: 260
特点: *
通道数: 2,DUART
FIFO's: 256 字节
规程: RS485
电源电压: 3.3V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 113-LFBGA
供应商设备封装: 113-FPBGA
包装: 托盘
其它名称: 1016-1471
XR17V352IB113-F-ND
XR17V352
56
HIGH PERFORMANCE DUAL PCI EXPRESS UART
REV. 1.0.3
MSR [2]: Receiver Disable
This bit can be used to disable the receiver by halting the Receive Shift Register (RSR). When this bit is set to
a logic 1, the receiver will operate in one of the following ways:
If a character is being received at the time of setting this bit, that character will be correctly received. No
more characters will be received.
If the receiver is idle at the time of setting this bit, no more characters will be received.
The receiver can be enabled and will start receiving characters by resetting this bit to a logic 0. The receiver
will operate in one of the following ways:
If the receiver is idle (RX pin is HIGH) at the time of setting this bit, the next character will be received
normally. It is recommended that the receiver be idle when resetting this bit to a logic 0.
If the receiver is not idle (RX pin is toggling) at the time of setting this bit, the RX FIFO will be filled with
unknown data.
Any data that is in the RX FIFO can be read out at any time whether the receiver is disabled or not.
Logic 0 = Enable Receiver (default).
Logic 1 = Disable Receiver.
MSR [1]: Transmitter Disable Modes
This bit is only applicable when MSR[3] = 1.
Logic 0 = No xon/xoff software flow control characters will be transmitted when the transmitter is disabled. If
there is a pending xon/xoff character to be sent while the transmitter is disabled, it will be transmitted. No
additional xon/xoff characters will be sent.
Logic 1 = Xon/xoff software flow control characters will be transmitted even though the transmitter is
disabled.
MSR[0]: Receiver Disable Modes
This is only applicable when MSR[2] = 1.
Logic 0 = All RX data and xon/xoff flow control characters are ignored.
Logic 1 = All RX data is ignored. Xon/xoff flow control characters are detected and acted upon.
4.12
SCRATCH PAD REGISTER (SPR) - Read/Write
This is a 8-bit general purpose register for the user to store temporary data. The content of this register is
preserved during sleep mode but becomes 0xFF (default) after a reset or a power off-on cycle.
4.13
FEATURE CONTROL REGISTER (FCTR) - Read/Write
This register controls the UART enhanced functions that are not available on ST16C554 or ST16C654.
FCTR[7:6]: TX and RX FIFO Trigger Table Select
These 2 bits select the transmit and receive FIFO trigger level table A, B, C or D. When table A, B, or C is
selected the auto RTS flow control trigger level is set to "next FIFO trigger level" for compatibility to ST16C550
and ST16C650 series. RTS/DTR# triggers on the next level of the RX FIFO trigger level, in another word, one
FIFO level above and one FIFO level below. See in Table 15 for complete selection with FCR bit [5:4] and
FCTR bits [7:6], i.e. if Table C is used on the receiver with RX FIFO trigger level set to 56 bytes, RTS/DTR#
output will de-assert at 60 and re-assert at 16.
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