CDC5806 - Texas Instruments

CDC5806 THREE PLLs BASED CLOCK GENERATOR

The CDC5806 is a clock generator which synthesizes video clocks, audio clocks, CPU clock, ASIC clock, USB clock, and a memory card clock from a 54-MHz system clock. Three phase-locked loops (PLLs) are used to generate the different frequencies from the system clock. On-chip loop filters and internal feedback eliminate the need for external components. Since .

Features

• High Performance Clock Generator
• Clock Input Compatible With LVCMOS/LVTTL
• Requires a 54-MHz Input Clock to Generate Multiple Output Frequencies
• Low Jitter for Clock Distribution
• Generates the Following Clocks:
  – VIDCLK 74.175824 MHz/54 MHz (Buffered)
  – AUDCLK 16.9344 MHz/12.288 MHz
  – CPUCLK 64 MHz
  – ASICCLK 32 MHz
  – USBCLK 48 MHz
  – MCCLK 38.4 MHz/19.2 MHz/12 MHz
• Operates From Single 3.3-V Supply
• Low Peak-to-Peak Period Jitter (150 ps Max)
• PLLs Are Powered Down, if No Valid REF_IN Clock (< 5 MHz) is Detected or the VDD is Below 2 V
• PLL Loop Filter Components Integrated
• Packa.