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AV9155C-23CM20 Datasheet(PDF) 3 Page - Integrated Circuit Systems |
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AV9155C-23CM20 Datasheet(HTML) 3 Page - Integrated Circuit Systems |
3 / 14 page 3 AV9155C Functionality - AV9155C-01 (Using 14.318 MHz input. All frequencies in MHz.) CLOCK#2 CPU and 2XCPU *VDD minimum 3.15V. PERIPHERAL CLOCKS REFERENCE CLOCKS Functionality - AV9155C-02 (Using 14.318 MHz input. All frequencies in MHz.) CLOCK#2 CPU and 2XCPU * VDD minimum 3.15V PERIPHERAL CLOCKS REFERENCE CLOCKS Frequency Transitions A key feature of the AV9155C is its ability to provide smooth, glitch-free frequency transitions on the CPU and 2XCPU clocks when the frequency select pins are changed. These frequency transitions do not violate the Intel 486 specification of less than 0.1% frequency change per clock period. Using an Input Clock as Reference The AV9155C is designed to accept a 14.318 MHz crystal as the input reference. With some external changes, it is possible to use a crystal oscillator or clock input. Please see application note AN04 for details on driving the AV9155C with a clock. K L C M M O C ) 1 n i P ( K L C S U B ) 6 n i P ( K L C D F ) 7 n i P ( K L C B K ) 8 n i P ( 3 4 8 . 16 14 22 1 K L C M M O C ) 1 n i P ( K L C S U B ) 6 n i P ( K L C D F ) 7 n i P ( K L C B K ) 8 n i P ( 3 4 8 . 12 34 22 1 1 K L C F E R ) 3 1 n i P ( 2 K L C F E R ) 4 1 n i P ( 8 1 3 . 4 18 1 3 . 4 1 1 K L C F E R ) 3 1 n i P ( 2 K L C F E R ) 4 1 n i P ( 8 1 3 . 4 18 1 3 . 4 1 2 S F ) 1 1 n i P ( 1 S F ) 9 1 n i P ( 0 S F ) 0 2 n i P ( U P C X 2 ) 7 1 n i P ( U P C ) 8 1 n i P ( 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 8 6 1 2 3 0 4 0 5 6 6 . 6 6 * 0 8 * 0 0 1 4 8 6 1 0 2 5 2 3 3 . 3 3 * 0 4 * 0 5 2 S F ) 1 1 n i P ( 1 S F ) 9 1 n i P ( 0 S F ) 0 2 n i P ( U P C X 2 ) 7 1 n i P ( U P C ) 8 1 n i P ( 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 8 6 1 2 3 0 4 0 5 6 6 . 6 6 * 0 8 * 0 0 1 4 8 6 1 0 2 5 2 3 3 . 3 3 * 0 4 * 0 5 |
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