FPGA延时精确调整时序的方法.pdf

312 62 SPACECRAFT RECOVERY REMOTE SENSING 2010 4 一种现场可编程门阵列门延时精确调整时序的方法 万 包 斌 成桂梅 ( , 100076) 通过FPGA( 现场可编程门阵列) 时序模型分析得出FPGA 门延时的方案, 综合利 FPGA 各种 布局布线EDA 工具, 摸索出一套人工干预FPGA 布局布线的方法, 使FPGA 门延时能够有效地 于时序调 整, 调整精度可达到纳秒级该方法具有不增加任何额外器件, 成本低高效方便的特点 现场可编程门阵列 门延时 时序调整 + : V443 5 : A : 1009- 8518( 2010) 02- 0062- 07 A FPGA Based Gate Delay Precise Timing Adjust Method Wan Min Bao Bin C eng Guimei ( Beijing Institute of Space Mec anicsElectricity, Beijing 100076, C ina) Abstract T e text get a timing met od by analyse FPGA timing modelIn studying t e FPGA EDA tools, aut or explore a manual intervene layout and routing met od We can use it to adjust availably in nanosecond grade T is met od ave a c aracter for not adding extra component, low cost, ig convenience Key words Field program gate array Gate delay Timing adjust 1 CCD CCD CCD , CCD FPGA( ) , , , , 1~ 10ns ,200MHz ; , , FPGA , , FPGA FPGA 2 FPGA FPGA , , FPGA , ( Look-Up-Table, LUT) , RAM[ 1- 2] , FPGA 4 LUT, LUT 4 16 1 RAM HDL , FPGA ( synplify) FPGA ( FPGA ) FPGA : 2010- 02- 03 : 2 万 等: 一种现场可编程门阵列门延时精确调整时序的方法 63 , FPGA , , , FPGA [ 3] FPGA , 1 1 FPGA 1 , FPGA FPGA, ( Input Delays) ( Internal Delay) ( Predicted Routing Delays) ( Output Delays) 4 FPGA , : 1) , ? 2) ? ? , ? 3) ? ? 4) , , , ? FPGA FPGA , FPGA 4 : 1) FPGA FPGA , , , , FPGA , 2) FPGA FPGA FPGA 3) FPGA FPGA 2 2 FPGA 2 , , FPGA 64 2010 31 4) , , FPGA , 3~ 4 , , , 6%, 3~ 6ns ,