參數(shù)資料
型號(hào)： XR16M580IM48-0A-EB
廠商： Exar Corporation
文件頁(yè)數(shù)： 33/56頁(yè)
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR16M580-A 48TQFP
標(biāo)準(zhǔn)包裝： 1
系列： *
XR16M580
39
REV. 1.0.0
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO
4.14
RX/TX FIFO Level Count Register (FC) - Read-Only
This register replaces SPR (during a read) and is accessible when FCTR[6] = 1. This register is also
accessible when LCR = 0xBF. It is suggested to read the FIFO Level Count Register at the Scratchpad
Register location when FCTR bit-6 = 1. See Table 12.
FC[7:0]: RX/TX FIFO Level Count
Receive/Transmit FIFO Level Count. Number of characters in Receiver FIFO (FCTR[7] = 0) or Transmitter
FIFO (FCTR[7] = 1) can be read via this register. Reading this register is not recommended when transmitting
or receiving data.
4.15
Feature Control Register (FCTR) - Read/Write
FCTR[1:0]: Reserved
FCTR[2]: IrDa RX Inversion
Logic 0 = Select RX input as encoded IrDa data (Idle state will be LOW).
Logic 1 = Select RX input as inverted encoded IrDa data (Idle state will be HIGH).
FCTR[3]: Auto RS-485 Direction Control
Logic 0 = Standard ST16C550 mode. Transmitter generates an interrupt when transmit holding register
becomes empty and transmit shift register is shifting data out.
Logic 1 = Enable Auto RS485 Direction Control function. The direction control signal, RTS# pin, changes its
output logic state from LOW to HIGH one bit time after the last stop bit of the last character is shifted out.
Also, the Transmit interrupt generation is delayed until the transmitter shift register becomes empty. The
RTS# output pin will automatically return to a LOW when a data byte is loaded into the TX FIFO. However,
RTS# behavior can be inverted by setting EMSR[3] = 1.
FCTR[5:4]: Reserved
FCTR[6]: Scratchpad Swap
Logic 0 = Scratch Pad register is selected as general read and write register. ST16C550 compatible mode.
Logic 1 = FIFO Count register (Read-Only), Enhanced Mode Select Register (Write-Only). Number of
characters in transmit or receive FIFO can be read via scratch pad register when this bit is set. Enhanced
Mode Select Register is selected when it is written into.
FCTR[7]: Programmable Trigger Register Select
Logic 0 = Register FC selected for RX.
Logic 1 = Register FC selected for TX.
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參數(shù)描述
XR16M580IM48-0C-EB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M580IM48 Series 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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XR16M581 制造商:EXAR 制造商全稱:EXAR 功能描述:1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE
XR16M581IB25 制造商:EXAR 制造商全稱:EXAR 功能描述:1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE
XR16M581IB25-0C-EB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M581IB25 Series 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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