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CY22381 Datasheet(PDF) 1 Page - Cypress Semiconductor |
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CY22381 Datasheet(HTML) 1 Page - Cypress Semiconductor |
1 / 11 page CY22381 CY223811 Three-PLL General Purpose FLASH Programmable Clock Generator Cypress Semiconductor Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document #: 38-07012 Rev. *H Revised January 17, 2011 Features ■ Three integrated phase-locked loops ■ Ultra-wide divide counters (eight-bit Q, eleven-bit P, and seven-bit post divide) ■ Improved linear crystal load capacitors ■ Flash programmability ■ Field programmability ■ Low-jitter, high-accuracy outputs ■ Power-management options (Shutdown, OE, Suspend) ■ Configurable crystal drive strength ■ Frequency select option through external LVTTL Input ■ 3.3V operation ■ 8-pin SOIC package (CY22381) ■ 8-pin SOIC package with NiPdAu lead finish (CY223811) ■ CyClocks RT™ support Functional Description ■ The CY22381 is the next-generation programmable Flash programmable clock for use in networking, telecommunication, datacom, and other general-purpose applications. The CY22381 offers up to three configurable outputs in a 8-pin SOIC, running off a 3.3V power supply. The on-chip reference oscillator is designed to run off an 8–30-MHz crystal, or a 1–166-MHz external clock signal. The CY22381 has a three PLLs driving 3 programmable output clocks. The output clocks are derived from the PLL or the reference frequency (REF). Output post dividers are available for either. The CY223811 is the CY22381 with NiPdAu lead finish. XTALIN XTALOUT FS/SUSPEND SHUTDOWN/OE CONFIGURATION FLASH OSC. PLL1 11-BIT P 8-BIT Q PLL2 11-BIT P 8-BIT Q PLL3 11-BIT P 8-BIT Q 4 × 3 Switch Crosspoint Divider 7-BIT Divider 7-BIT Divider 7-BIT CLKA CLKB CLKC Logic Block Diagram [+] Feedback |
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