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    十通道接收機

    日期: 2021-02-02   瀏覽:   來源:未知

    1.設備構架

    十通道接收機采用VPX總線構架而成,組成如下圖所示:

    十通道接收機構架

    圖1  十通道接收機構架

    2.信號流向

    十通道接收機信號流向

    圖2  十通道接收機信號流向

    3.技術指標

    采用Analog公司的AD9208雙通道ADC,其技術指標如下

    ?JESD204B(子類1)編碼串行數字輸出

    ?支持每線高達16Gbps的線速

    ?3GSPS時每通道的總功率為1.65W(默認設置)

    ??2dBFS幅度、2.6GHz輸入時的性能

    ?SFDR=70dBFS

    ?SNR=57.2dBFS

    ??9dBFS幅度、2.6GHz輸入時的性能

    ?SFDR=78dBFS

    ?SNR=59.5dBFS

    ?集成式輸入緩沖器

    ?噪聲密度=?152dBFS/Hz

    ?9GHz模擬輸入全功率帶寬(?3dB)

    ?每個通道具有2個集成式寬帶數字處理器

    ?48位NCO

    ?4個級聯半帶濾波器

    ?相位相干NCO切換

    ?提供多達4個通道

    ?串口控制

    ?具有除以2和除以4選項的整數時鐘

    ?靈活的JESD204B線配置

    AD9208原理框架

    圖2.3  AD9208原理框架

    采用Altera公司S10FPGA+ARM信號處理器,其技術指標如下:

    1.Logicelements(LEs):2,753,000.

    2.Adaptivelogicmodules(ALMs):933,120.

    3.ALMregisters:3,732,480.

    4.M20Kmemoryblocks:11,721.

    5.M20Kmemorysize(Mb):229.

    6.MLABmemorysize(Mb):15.

    7.Variable-precisiondigitalsignalprocessing(DSP)blocks:5,760.

    8.18x19multipliers:11,520.

    9.Peakfixed-pointperformance(TMACS):23.0.

    10.Peakfloating-pointperformance(TFLOPS):9.2.

    11.MaximumuserI/Opins:1160.

    12.MaximumLVDSpairs1.6Gbps(RXorTX):576.

    13.Totalfullduplextransceivercount:96.

    14.GXTfullduplextransceivercount(upto28.3Gbps):64.

    15.GXfullduplextransceivercount(upto17.4Gbps):32.

    16.Processor:Quad-core64bitARMCortex-A53MPCore*processor.

    17.Maximumprocessorfrequency:1.5GHz.

    18.Processorcacheandco-processors

    (1)L1instructioncache(32KB)

    (2)L1datacache(32KB)witherrorcorrectioncode(ECC)

    (3)Level2cache(1MB)withECC

    (4)Floating-pointunit(FPU)singleanddoubleprecision

    (5)ARMNEONmediaengine

    (6)ARMCoreSight*debugandtracetechnology

    (7)SystemMemoryManagementUnit(SMMU)

    (8)CacheCoherencyUnit(CCU)

    19.ScratchpadRAM:256KB.

    20.HPSDDRmemory:DDR4,DDR3(Upto64bitwithECC.

    21.Directmemoryaccess(DMA)controller:8channels.

    22.EMAC:3X10/100/1000Ethernetmediaaccesscontroller(EMAC)withintegratedDMA.

    23.USBon-the-go(OTG)controller:2XUSBOTGwithintegratedDMA.

    24.UARTcontroller:2XUART16550compatible.

    25.Serialperipheralinterface(SPI)controller:4XSPI.

    26.I2Ccontroller:5XI2C.

    27.QuadSPIflashcontroller:1XSIO,DIO,QIOSPIflashsupported.

    28.SD/SDIO/MMCcontroller:1XeMMC4.5withDMAandCE-ATAsupport.

    29.NANDflashcontroller

    (1)1XONFI1.0orlater

    (2)8and16bitsupport

    30.General-purposetimers:4X.

    31.Software-programmablegeneral-purposeI/Os(GPIOs):Maximum48GPIOs.

    32.HPSDDRSharedI/O:3X48-MaybeassignedtoHPSforHPSDDRaccess.

    33.DirectI/Os:48I/OstoconnectHPSperipheralsdirectlytoI/O.

    34.Watchdogtimers:4X.