The 9LPRS477 is a main clock synthesizer chip that provides all clocks required for ATI RD7xx-based systems using AMD processors. An SMBus interface allows full control of the device.


  • Features/Benefits
    • CPU, ATIG, SB_SRC and SRC outputs are independently programmable for frequency
    • Spread Spectrum for EMI reduction 
    • Outputs may be disabled via SMBus
    • External crystal load capacitors for maximum frequency accuracy
    • Meets PCIEX Gen2 specifications
    • Meets 30kHz to 33kHz SRC modulation rate specification for USB3.0
  • Key Specifications 
    • CPU outputs cycle-to-cycle jitter < 85ps
    • SRC outputs cycle-to-cycle jitter < 125ps
    • ATIG outputs cycle-to-cycle jitter < 125ps
    • ± 300ppm frequency accuracy on CPU, SRC & ATIG clocks


器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 64 C 是的 Tray
Active VFQFPN 64 C 是的 Reel


文档标题 language 类型 文档格式 文件大小 日期
9LPRS477D Datasheet 数据手册 PDF 440 KB
9LPRS477C Datasheet 数据手册 PDF 308 KB
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