REV. 1.0.3 MSR [2]: Receiver Disable This bit can be used to disable the receiver by halting" />
參數(shù)資料
型號(hào)： XR17V352IB-0A-EVB
廠商： Exar Corporation
文件頁(yè)數(shù)： 52/64頁(yè)
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR17V352 113BGA
產(chǎn)品培訓(xùn)模塊： PCIe UARTs
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，UART
已用 IC / 零件： XR17V352
已供物品： 板
其它名稱： 1016-1610
1016-1610-ND
1016-1645
XR17V352IB-0A-EVB-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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17V352IB113-F 功能描述:UART 接口集成電路 2 Channel PCIe UART w/256 Byte FIFO 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
XR17V354 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE QUAD PCI-EXPRESS UART
XR17V354IB-0A-EVB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR17V354IB-0A RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR17V354IB176-F 功能描述:UART 接口集成電路 4 Channel PCIe UART w/256 Byte FIFO 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
XR17V354IB-E4-EVB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR17V354IB-E4 RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
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