REV. 1.0.1 1.62V TO 3.63V HIGH PERFORMANCE UART WITH 32-BYTE FIFO 4.8 Line Status Register (LSR) - Read Only This reg" />
參數(shù)資料
型號(hào)： XR16M670IL24-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 27/50頁(yè)
文件大?。?/td> 0K
描述： IC UART FIFO 32B 24QFN
標(biāo)準(zhǔn)包裝： 490
特點(diǎn)： *
通道數(shù)： 1，UART
FIFO's： 32 字節(jié)
規(guī)程： RS232，RS422，RS485
電源電壓： 1.62 V ~ 3.63 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 24-QFN 裸露焊盤(pán)（4x4）
包裝： 托盤(pán)
XR16M670
33
REV. 1.0.1
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 32-BYTE FIFO
4.8
Line Status Register (LSR) - Read Only
This register provides the status of data transfers between the UART and the host. If IER bit-2 is enabled, LSR
bit 1 will generate an interrupt immediately and LSR bits 2-4 will generate an interrupt when a character with an
error is in the RHR.
LSR[0]: Receive Data Ready Indicator
Logic 0 = No data in receive holding register or FIFO (default).
Logic 1 = Data has been received and is saved in the receive holding register or FIFO.
LSR[1]: Receiver Overrun Flag
Logic 0 = No overrun error (default).
Logic 1 = Overrun error. A data overrun error condition occurred in the receive shift register. This happens
when additional data arrives while the FIFO is full. In this case the previous data in the receive shift register
is overwritten. Note that under this condition the data byte in the receive shift register is not transferred into
the FIFO, therefore the data in the FIFO is not corrupted by the error.
LSR[2]: Receive Data Parity Error Tag
Logic 0 = No parity error (default).
Logic 1 = Parity error. The receive character in RHR does not have correct parity information and is suspect.
This error is associated with the character available for reading in RHR.
LSR[3]: Receive Data Framing Error Tag
Logic 0 = No framing error (default).
Logic 1 = Framing error. The receive character did not have a valid stop bit(s). This error is associated with
the character available for reading in RHR.
LSR[4]: Receive Break Tag
Logic 0 = No break condition (default).
Logic 1 = The receiver received a break signal (RX was LOW for at least one character frame time). In the
FIFO mode, only one break character is loaded into the FIFO. The break indication remains until the RX
input returns to the idle condition, “mark” or HIGH.
LSR[5]: Transmit Holding Register Empty Flag
This bit is the Transmit Holding Register Empty indicator. The THR bit is set to a logic 1 when the last data byte
is transferred from the transmit holding register to the transmit shift register. The bit is reset to logic 0
concurrently with the data loading to the transmit holding register by the host. In the FIFO mode this bit is set
when the transmit FIFO is empty, it is cleared when the transmit FIFO contains at least 1 byte.
LSR[6]: THR and TSR Empty Flag
This bit is set to a logic 1 whenever the transmitter goes idle. It is set to logic 0 whenever either the THR or
TSR contains a data character. In the FIFO mode this bit is set to a logic 1 whenever the transmit FIFO and
transmit shift register are both empty.
LSR[7]: Receive FIFO Data Error Flag
Logic 0 = No FIFO error (default).
Logic 1 = A global indicator for the sum of all error bits in the RX FIFO. At least one parity error, framing error
or break indication is in the FIFO data. This bit clears when there is no more error(s) in any of the bytes in the
RX FIFO.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16M670IL32 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:1.62V TO 3.63V HIGH PERFORMANCE UART WITH 32-BYTE FIFO
XR16M670IL32-0A-EB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M670IL32 Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
XR16M670IL32-0B-EB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M670IL32 Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
XR16M670IL32-0C-EB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M670IL32 Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
XR16M670IL32-F 功能描述:UART 接口集成電路 1.8 HIGH PERFORMANCE UART W/32 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
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