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    參數(shù)資料
    

    


    


    
型號(hào)：
XR17D158CV-0A-EVB

    

    
廠(chǎng)商：
Exar Corporation

    

    
文件頁(yè)數(shù)：
47/73頁(yè)

    

    
文件大?。?/td>
0K

    

    
描述：
EVAL BOARD FOR XR17D158 144TQFP

    

    
標(biāo)準(zhǔn)包裝：
1

    

    
系列：
*

    

    

    

	
    
    
    

    
    
	
    xr
    XR17D158
    REV. 1.2.2
    UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
    51
    5.8.12
    SCRATCH PAD REGISTER (SPR) - Read/Write
    This is an 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.
    5.8.13
    FEATURE CONTROL REGISTER (FCTR) - Read/Write
    FCTR [3:0] - Auto RTS/DTR Flow Control Hysteresis Select
    These bits select the auto RTS/DTR flow control hysteresis and only valid when TX and RX Trigger Table-D is
    selected (FCTR bit-6 and 7 are set to logic 1). The RTS/DTR hysteresis is referenced to the RX FIFO trigger
    level. After reset, these bits are set to logic 0 selecting the next FIFO trigger level for hardware flow control.
    Table 18 shows the 16 selectable hysteresis levels.
    FCTR[4]: Infrared RX Input Logic Select
     Logic 0 = Select RX input as active high encoded IrDA data, normal, (default).
     Logic 1 = Select RX input as active low encoded IrDA data, inverted.
    FCTR[5]: Auto RS485 Enable
    Auto RS485 half duplex control enable/disable.
     Logic 0 = Standard ST16C550 mode. Transmitter generates an interrupt when transmit holding register
    (THR) becomes empty. Transmit Shift Register (TSR) may still be shifting data bit out.
     Logic 1 = Enable Auto RS485 half duplex direction control. RTS# output changes its logic level from HIGH to
    LOW when finished sending the last stop bit of the last character out of the TSR register. It changes back to
    HIGH from LOW when a data byte is loaded into the THR or transmit FIFO. The change to HIGH occurs prior
    sending the start-bit. It also changes the transmitter interrupt from transmit holding to transmit shift register
    (TSR) empty.
    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 Table 15 for complete selection with FCR bit 4-5 and FCTR
    bit 6-7, 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
    		

    
    

    
XR17D158CV-F
功能描述:UART 接口集成電路 3.3V-5V 64B FIFO temp 0C to 70C; UART 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

    

    
XR17D158CV-F-SIWI
 制造商:Exar Corporation 功能描述:FOR WILLIAMS GAMING THEIR CM'S 制造商:EXAR 功能描述:XR17D158CV-F-SIWI 制造商:EXAR 功能描述:FOR WILLIAMS GAMING THEIR CM'S

    

    
XR17D158CVTR-F
 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17D158CVTR-F

    

    
XR17D158IV
功能描述:UART 接口集成電路 UART 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

    

    
XR17D158IV-F
功能描述:UART 接口集成電路 3.3V-5V 64B FIFO temp -45 to 85C;UART 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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