ICS950508中文資料瑞薩數(shù)據(jù)手冊PDF規(guī)格書

Output Features:

? 2 - CPUs @ 2.5V

? 13 - SDRAM @ 3.3V

? 3 - 3V66 @ 3.3V

? 8 - PCI @3.3V

? 1 - 24/48MHz@ 3.3V

? 1 - 48MHz @ 3.3V fixed

? 1 - REF @3.3V, 14.318MHz

Features/Benefits:

? Programmable output frequency.

? Programmable output divider ratios.

? Programmable output rise/fall time.

? Programmable output skew.

? Programmable spread percentage for EMI control.

? Watchdog timer technology to reset system

if system malfunctions.

? Programmable watch dog safe frequency.

? Support I2

C Index read/write and block read/write

operations.

? Uses external 14.318MHz crystal.

Key Specifications:

? CPU Output Jitter: <250ps

? IOAPIC Output Jitter: <500ps

? 48MHz, 3V66, PCI Output Jitter: <500ps

? Ref Output Jitter. <1000ps

? CPU Output Skew: <175ps

? PCI Output Skew: <500ps

? 3V66 Output Skew <175ps

? For group skew timing, please refer to the

Group Timing Relationship Table.