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Motore di ricerca datesheet componenti elettronici |
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AV9155C Scheda tecnica(PDF) 1 Page - Integrated Circuit Systems |
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AV9155C Scheda tecnica(HTML) 1 Page - Integrated Circuit Systems |
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1 / 14 page  Integrated Circuit Systems, Inc. General Description Features AV9155C Block Diagram AV9155C Rev F 12/13/00 Low Cost 20-Pin Frequency Generator The AV9155C is a low cost frequency generator designed specifically for desktop and notebook PC applications with either 3.3V or 5.0V power supply voltage. Its CPU clocks provide all necessary CPU frequencies for 286, 386 and 486 systems, including support for the latest speeds of processors. The device uses a 14.318 MHz crystal to generate the CPU and all peripheral clocks for integrated desktop motherboards. The dual 14.318 MHz clock outputs allows one output for the system and one to be the input to an ICS graphics frequency generator such as the AV9194. The CPU clock offers the unique feature of smooth, glitch- free transitions from one frequency to the next, making this ideal device to use whenever slowing the CPU speed. The AV9155C makes a gradual transition between frequencies, so that it obeys the Intel cycle-to-cycle timing specification for 486 systems. The simultaneous 2X and 1X CPU clocks offer controlled skew to within 1.5ns (max) of each other. ICS offers several versions of the AV9155C. The different devices are shown below: • Compatible with 286, 386, and 486 CPUs • Supports turbo modes • Generates communications clock, keyboard clock, floppy disk clock, system reference clock, bus clock and CPU clock • Output enable tristates outputs • Up to 100 MHz at 5V or 3.3V • 20-pin DIP or SOIC • All loop filter components internal • Skew-controlled 2X and 1X CPU clocks • Power-down option ICS has been shipping motherboard frequency generators since April 1990, and is the leader in the area of multiple output clocks on a single chip. The AV9155C is a third generation device, and uses ICS’s patented analog CMOS phase-locked loop technology for low phase jitter. ICS offers a broad family of frequency generators for motherboards, graphics and other applications, including cost-effective versions with only one or two output clocks. Consult ICS for all of your clock generation needs. Pentium is a trademark of Intel Corporation. T R A PN O I T P I R C S E D 1 0 - C 5 5 1 9 V AK L C S U B z H M 6 1 h t i w r o t a r e n e g k c o l c d r a o b r e h t o M 2 0 - C 5 5 1 9 V AK L C S U B z H M 2 3 h t i w r o t a r e n e g k c o l c d r a o b r e h t o M 3 2 - C 5 5 1 9 V Am u i t n e P s e d u l c n I Ô s e i c n e u q e r f 6 3 - C 5 5 1 9 V Ak c o l c I S C S z H M 0 4 l a i c e p s a s e r u t a e F |
Codice articolo simile - AV9155C |
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