CY2544 CY2546
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CY2544FIT (pdf) |
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CY2544FI |
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CY2544FC |
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CY2544FCT |
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CY2544 CY2546 Quad PLL Programmable Clock Generator with Spread Spectrum • Four fully integrated phase-locked loops PLLs • Input Frequency range: External crystal 8 to 48 MHz External reference 8 to 166 MHz clock • Wide operating output frequency range 3 to 166 MHz • Programmable Spread Spectrum with Center and Down Spread option and Lexmark modulation profile • Two VDD core voltage options 2.5V, 3.0V, and 3.3V for CY2544 1.8V for CY2546 • Selectable output voltages 2.5V, 3.0V, and 3.3V for CY2544 1.8V for CY2546 • Frequency Select feature with option to select eight different frequencies • Low jitter, high accuracy outputs • Up to nine clock outputs • Programmable output drive strength • Glitch-free outputs while frequency switching • 24-pin QFN package • Commercial and Industrial temperature ranges Block Diagram • Multiple high-performance PLLs allow synthesis of unrelated frequencies • Nonvolatile programming for customized PLL frequencies, spread spectrum characteristics, drive strength, crystal load capacitance, and output frequencies • Two Spread Spectrum capable PLLs with Linear or Lexmark profile for maximum EMI reduction • Spread Spectrum PLLs can be disabled or enabled separately • PLLs can be programmed for system frequency margin tests • Meets critical timing requirements in complex system designs • Suitable for PC, consumer, and networking applications • Ability to synthesize standard frequencies with ease • Application compatibility in standard and low-power systems EXCLKIN XIN XOUT FS0 FS1 FS2 MUX and Control Logic PLL1 PLL2 PLL3 SS 4 of 6 Crossbar Switch Bank 1 Output Dividers and Bank 2 Drive Strength Control Bank 3 CLK1 CLK2 CLK3 CLK4 CLK5 CLK6 CLK7 CLK8 CLK9 SSON PLL4 SS PD#/OE • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 [+] Feedback CY2544 CY2546 Pin Configuration XIN XOUT VDD EXCLKIN CLK9 GND XIN XOUT VDD_CORE EXCLKIN CLK9 GND GND 1 18 GND GND 1 Ordering Information Part Number[2] Type Lead-free CY2544Cxxx 24-pin QFN CY2544CxxxT 24-pin QFN -Tape & Reel CY2544FC 24-pin QFN CY2544FCT 24-pin QFN - Tape & Reel CY2546Cxxx 24-pin QFN CY2546CxxxT 24-pin QFN -Tape & Reel CY2546FC 24-pin QFN CY2546FCT 24-pin QFN -Tape & Reel CY2544IxxxT 24-pin QFN -Tape & Reel CY2544FI 24-pin QFN CY2544FIT 24-pin QFN - Tape & Reel CY2546Ixxx 24-pin QFN CY2546IxxxT 24-pin QFN -Tape & Reel CY2546FI 24-pin QFN CY2546FIT 24-pin QFN -Tape & Reel VDD V Temperature Range Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Commercial, 0°C to 70°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Industrial, -40°C to +85°C Note xxx Indicates Factory Programmable are factory programmed configurations. For more details, contact your local Cypress FAE or Cypress Sales Representative. F in the part number indicates field programmable using CyberClocks Online software. Page 9 of 11 [+] Feedback |
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