CY2544 CY2546 CY2548 Quad PLL Programmable Clock Generator with Spread Spectrum Quad PLL Programmable Clock Generator with Spread Spectrum Ability to synthesize nonstandard frequencies with Fractional-N Features capability Four fully integrated phase locked loops (PLLs) Up to nine clock outputs with programmable drive strength Input frequency range Glitch free outputs while frequency switching External crystal: 8 to 48 MHz for CY2544 and CY2546 24-pin QFN package External reference: 8 to 166 MHz clock Commercial and Industrial temperature ranges Reference clock input voltage range 2.5 V, 3.0 V, and 3.3 V for CY2548 Benefits 1.8 V for CY2544 and CY2546 Wide operating output frequency range Multiple high performance PLLs allow synthesis of unrelated frequencies 3 to 166 MHz Nonvolatile programming for personalization of PLL Programmable spread spectrum with center and down spread frequencies, spread spectrum characteristics, drive strength, option and Lexmark and Linear modulation profiles crystal load capacitance, and output frequencies VDD supply voltage options: Application specific programmable EMI reduction using spread 2.5 V, 3.0 V, and 3.3 V for CY2544 and CY2548 spectrum for clocks 1.8 V for CY2546 Programmable PLLs for system frequency margin tests Selectable output clock voltages: 2.5 V, 3.0 V, and 3.3 V for CY2544 and CY2548 Meets critical timing requirements in complex system designs 1.8 V for CY2546 Suitability for PC, consumer, portable, and networking Frequency select feature with option to select eight different applications frequencies over nine clock outputs Capable of Zero PPM frequency synthesis error Power down, output enable, and SS ON/OFF controls Uninterrupted system operation during clock frequency switch Low jitter, high accuracy outputs Application compatibility in standard and low power systems For a complete list of related documentation, click here. Logic Block Diagram CLKIN CLK1 Crossbar XIN/ Bank CLK2 Switch 1 EXCLKIN OSC Output PLL1 CLK3 XOUT Dividers CLK4 and Bank CLK5 2 MUX Drive FS 0 PLL2 CLK6 Strength FS 1 and CLK7 Control FS 2 Bank Control CLK8 3 PLL3 CLK9 Logic (SS) PLL4 (SS) PD /OE SSON Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-12563 Rev. *I Revised December 3, 2014 CY2544 CY2546 CY2548 Contents Device Selection Guide ....................................................3 AC Electrical Specifications ............................................ 9 Pinout ................................................................................3 Configuration Example for C-C Jitter ............................. 9 Pin Definitions ..................................................................3 Recommended Crystal Specification ............................. 9 Pinout ................................................................................4 Recommended Crystal Specification ........................... 10 Pin Definitions ..................................................................5 Test and Measurement Setup ........................................ 10 General Description .........................................................5 Voltage and Timing Definitions ..................................... 10 Four Configurable PLLs ..............................................5 Ordering Information ...................................................... 11 Input Reference Clocks ...............................................5 Possible Configurations ............................................. 11 Multiple Power Supplies ..............................................5 Ordering Code Definitions ......................................... 12 Output Bank Settings ..................................................6 Package Drawing and Dimensions ............................... 13 Output Source Selection .............................................6 Acronyms ........................................................................14 Spread Spectrum Control ............................................6 Document Conventions ................................................. 14 Frequency Select ........................................................6 Units of Measure ....................................................... 14 Glitch-Free Frequency Switch .....................................6 Document History Page ................................................. 15 PD /OE Mode .............................................................6 Sales, Solutions, and Legal Information ...................... 17 Output Drive Strength ..................................................6 Worldwide Sales and Design Support ....................... 17 Generic Configuration and Custom Frequency ...........6 Products ....................................................................17 Absolute Maximum Conditions .......................................7 PSoC Solutions ...................................................... 17 Recommended Operating Conditions ............................7 Cypress Developer Community ................................. 17 DC Electrical Specifications ............................................7 Technical Support ..................................................... 17 Document Number: 001-12563 Rev. *I Page 2 of 17