Rainbow-electronics DS1080L Manual de usuario descargar pdf (Pagina 5)

DS1080L

Spread-Spectrum Crystal Multiplier

_____________________________________________________________________ 5

CRYSTAL

OSCILLATOR

1x/2x/4x CLOCK MULTIPLYING

PLL WITH SPREAD SPECTRUM

CONFIGURATION DECODE

AND CONTROL

GND

NOTE: SEE INFORMATION ABOUT C

AND C

IN THE APPLICATIONS INFORMATION SECTION AT THE END OF THE DATA SHEET.

PDN

SSO

CMSEL

SMSEL

16MHz

33.4MHz

SSO

= 16MHz

134MHz

SSO

DS1080L

Block Diagram

Pin Description

PIN NAME FUNCTION

1X1

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

CMSEL

Clock Multiplier Select. Tri-level digital input.

0 = 1x

Float = 2x

1 = 4x

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 Tri-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.

Supply Voltage

8X2

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.

1 2 3 4 5 6 7 8

Comentarios a estos manuales

Sin comentarios

Rainbow-electronics DS1080L Manual de usuario Pagina 5

Comentarios a estos manuales

Relacionado con productos y manuales para Hardware De La Computadora Rainbow-electronics DS1080L