I/O Std,Vcco,Slew,Drive Strength:显示I/O端口的参数值; Off-Chip Termination:显示每个I/O标准的默认端接。比如FP_VTT_50表示远端并联50Ω的VTT端接类型;HSTL_1表示远端并联40Ω的VTT端口类型。具体的端接类型可以在ug471(7系列)和ug571(UltraScale系列)中查看; Remaining Margin %:显示Bank中剩余的噪声裕...
1.4.Pull type(上下拉类型) 1.5.On-chip termination(输入端/输出端的内置片上端接电阻) 当使用高速IO接口时,在接收端通常需要匹配的端接电阻,有利于高低电平的转换和提高信号的完整性,且端接电阻尽可能的放置在接收端。 1.5.1 差分输入端接电阻配置 通常需要在差分输入端并行端接100Ω的电阻,FPGA在差分输入接...
[答:Johnli] stratixII suport the following on-chip termination method: 1.Differential termination (RD) 2.Series termination (RS) without calibration 3.Series termination (RS) with calibration [2006-2-23 11:04:04] [问:nafata] 信号完整性损伤主要包括反射、串扰、振荡、接地反弹等多个方面,一般来...
eliminate off-chip termination for signals using T_DCI. In addition to board space savings, the termination automatically turns off when in output mode or when 3-stated, saving considerable power compared to off-chip termination. The I/Os also have low power modes for IBUF and IDELAY to ...
例如利用DDR2的ODT (On Die Termination ,内建终结电阻)信号终端器来简化DQS (数据选通)总线设计。在DDR2 SDRAM 中,终端寄存器就实现在该DDR2芯片之中,内存控制器可以为每个信号设定终端寄存器的开或关,这些信号包括数据信号、数据选通信号和写数据屏蔽信号。利用ODT 能降低多重反射,提高信号完整性并增加时序余量...
10、g chip early, usually its speed of operation and design flexibility are low.fpga development for high-speed and highly integrated image storage and display system provides a new approach and solution ideas, fpga itself has a powerful logic resources and use off-chip resource allocation and mo...
useWasobservedtheimagebyImageViewertoolinVisualDSP++Wasalsoobserved.Theresultsshowthatthematchedterminationdoesnotofon・chipdifferentialsis,mldeterioratedofferentialsignal,greatlyreducesPCBboardspace,andmakesthematchingaboutterminalmoreflexible.Keywords:differentialsignal;impedancematching;on-chiptermination(OCT);FPGA...
RX_ONCHIP_TERMINATION_R_Ohms). 2(100ohms) EnableFGTRXACDISABLEEnableRXexternalACcouplingsetting.Defaultvalueis CoupleENABLEENABLE. EnableFGTVSRmodeVSR_MODE_LOW_LOSSEnableVSRmodesetting.Defaultvalueis VSR_MODE_HIGH_LOSSVSR_MODE_DISABLE. VSR_MODE_DISABLE Figure5.AnalogParameterOptionsforFHTPMAinParameterEdit...
On-Chip Differential Termination_片内差分终端 Spartan-3E器件在片内提供了跨在输入差分接收终端设备上的约为120Ω的差分终端电阻。在Spartan-3E器件里的片内输入差分终端电阻从内消除了在差分接收电路里常见的100Ω的终端电阻。 差分终端电阻用于保证对LVDS,mini-LVDS和SDS的应用。片内差分终端电阻在使用Vcco=2.5V的...
Enablefull-duplexOn/OffTurnonthisoptiontoincludethelogicforfull-duplexflow flowcontrolcontrolthatincludespauseframesgenerationandtermination. EnableVLANOn/OffTurnonthisoptiontoincludethelogicforVLANandstacked detectionVLANframedetection.Whenturnedoff,theMACdoesnot detectVLANandstakedVLANframes.TheMACforwardsthese fra...