IMIFS792 - Cypress Semiconductor

IMIFS792 (IMIFS791/92/94) Low EMI Spectrum Spread Clock

Pin 1,2 Name Xin/Xout I/O I/O Type analog Description Pins form an on-chip reference oscillator when connected to terminals of an external parallel resonant crystal. XIN may be connected to TTL/CMOS external clock other than crystal, leave XOUT (pin 2) unconnected. Digital control inputs used to select the input frequency range and output frequency scaling. .

Features

• Spread Spectrum Clock Generator (SSCG) with 1x, 2x and 4x outputs
• 80- to 140-MHz operating frequency range
• Modulates external clocks including crystals, crystal oscillators, and ceramic resonators
• Programmable modulation with simple R-C external loop filter (LF)
• Center spread modulation
• 3
  –5 Volt power supply
• TTL/CMOS compatible outputs
• Low short-term jitter
• Low Power Dissipation; — 3.3 VDC = 73 mW—typical — 5.0 VDC = 225 mW—typical
• Available in 8-pin SOIC package . Applications
•
•
•
•
•
•
• Desktop/Notebook computers VGA, XGA, and SXGA LCD displays High-speed printers and.