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DS1080L Datasheet(PDF) 5 Page - Maxim Integrated Products |
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DS1080L Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 8 page Spread-Spectrum Crystal Multiplier CRYSTAL OSCILLATOR 1x/2x/4x CLOCK MULTIPLYING PLL WITH SPREAD SPECTRUM CONFIGURATION DECODE AND CONTROL VCC VCC GND NOTE: SEE INFORMATION ABOUT CL1 AND CL2 IN THE APPLICATIONS INFORMATION SECTION AT THE END OF THE DATA SHEET. PDN SSO CMSEL SMSEL X1 X2 16MHz TO 33.4MHz fSSO = 16MHz TO 134MHz CL1 CL2 fIN fSSO DS1080L Block Diagram Pin Description PIN NAME FUNCTION 1 X1 Crystal Drive/Clock Input. A crystal with the proper loading capacitors is connected across X1 and X2. Instead of a crystal, a clock can be applied at the X1 input. 2 GND Signal Ground 3 CMSEL Clock Multiplier Select. Tri-level digital input. 0 = 1x Float = 2x 1 = 4x 4 SMSEL Spread-Spectrum Magnitude Select. Tri-level digital input. 0 = ±0.5% Float = ±1.0% 1 = ±1.5% 5 PDN Power-Down/Spread-Spectrum Disable. Tri-level digital input. 0 = Power-Down/SSO Three-Stated Float = Power-Up/Spread Spectrum Disabled 1 = Power-Up/Spread Spectrum Enabled 6 SSO Spread-Spectrum Clock Multiplier Output. Outputs a 1x, 2x, or 4x spread-spectrum version of the crystal or clock applied at the X1/X2 pins. 7 VCC Supply Voltage 8 X2 Crystal Drive Output. A crystal with the proper loading capacitors is connected across X1 and X2. If a clock is connected to X1, then X2 should be left open circuit. _______________________________________________________________________________________ 5 |
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