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ICS9250-22 Datasheet

Part Number ICS9250-22
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Datasheet ICS9250-22 DatasheetICS9250-22 Datasheet (PDF)

Integrated Circuit Systems, Inc. ICS9250-22 Frequency Generator for P IV™ Recommended Application: P IV Chipset Support Output Features: • 4 Differential CPU Clock Pairs @ 3.3V • 2 - 3V MREF clocks for memory reference seeds, (separate single ended but 180 degrees out of phase) • 4 - 66MHz reference output • 10 - 3V 33MHz PCI clocks • 2 - 48MHz clocks • 2 - 14.318 reference output Features: • Support power management: Power Down Mode • Supports Spread Spectrum modulation: 0 to -0.5% down sprea.

  ICS9250-22   ICS9250-22






Part Number ICS9250-29
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Datasheet ICS9250-22 DatasheetICS9250-29 Datasheet (PDF)

Integrated Circuit Systems, Inc. ICS9250-29 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: Solano type chipset. Output Features: • 2 CPU (2.5V) (up to 133MHz achievable through I2C) • 13 SDRAM (3.3V) (up to 133MHz achievable through I2C) • 5 PCI (3.3 V) @33.3MHz • 1 IOAPIC (2.5V) @ 33.3 MHz • 3 Hublink clocks (3.3 V) @ 66.6 MHz • 2 (3.3V) @ 48 MHz (Non spread spectrum) • 1 REF (3.3V) @ 14.318 MHz Features: • Supports spread spectrum modulation, 0 to -0.

  ICS9250-22   ICS9250-22







Part Number ICS9250-28
Manufacturers Renesas
Logo Renesas
Description Frequency Generator & Integrated Buffer
Datasheet ICS9250-22 DatasheetICS9250-28 Datasheet (PDF)

ICS9250-28 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E and 815 type chipset. Output Features: • 2 CPU (2.5V) (up to 133MHz achievable through I2C) • 13 SDRAM (3.3V) (up to 133MHz achievable through I2C) • 2 PCI (3.3 V) @33.3MHz • 1 IOAPIC (2.5V) @ 33.3 MHz • 3 Hublink clocks (3.3 V) @ 66.6 MHz • 2 (3.3V) @ 48 MHz (Non spread spectrum) • 1 REF (3.3V) @ 14.318 MHz Features: • Supports spread spectrum modulation, 0 to -0.5% down spread. • I2C .

  ICS9250-22   ICS9250-22







Part Number ICS9250-28
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Datasheet ICS9250-22 DatasheetICS9250-28 Datasheet (PDF)

Integrated Circuit Systems, Inc. ICS9250-28 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E and 815 type chipset. Output Features: • 2 CPU (2.5V) (up to 133MHz achievable through I2C) • 13 SDRAM (3.3V) (up to 133MHz achievable through I2C) • 2 PCI (3.3 V) @33.3MHz • 1 IOAPIC (2.5V) @ 33.3 MHz • 3 Hublink clocks (3.3 V) @ 66.6 MHz • 2 (3.3V) @ 48 MHz (Non spread spectrum) • 1 REF (3.3V) @ 14.318 MHz Features: • Supports spread spectrum modulatio.

  ICS9250-22   ICS9250-22







Part Number ICS9250-27
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Datasheet ICS9250-22 DatasheetICS9250-27 Datasheet (PDF)

Integrated Circuit Systems, Inc. ICS9250-27 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E and 815 type chipset. Output Features: • 3 CPU (2.5V) (up to 133MHz achievable through I2C) • 9 SDRAM (3.3V) (up to 133MHz achievable through I2C) • 7 PCI (3.3 V) @33.3MHz • 2 IOAPIC (2.5V) @ 33.3 MHz • 3 Hublink clocks (3.3 V) @ 66.6 MHz • 2 (3.3V) @ 48 MHz (Non spread spectrum) • 1 REF (3.3V) @ 14.318 MHz Features: • Supports spread spectrum modulation.

  ICS9250-22   ICS9250-22







Part Number ICS9250-26
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Datasheet ICS9250-22 DatasheetICS9250-26 Datasheet (PDF)

Integrated Circuit Systems, Inc. ICS9250-26 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E type chipset. Provides three CPU speeds (66.6, 100, 133MHz) with SDRAM = 133.3MHz. Output Features: • 3 CPU (2.5V) 66.6/133.3MHz (up to 150MHz achievable through I2C) • 9 SDRAM (3.3V) @ 133.3MHz (up to 150MHz achievable through I2C) • 8 PCI (3.3 V) @33.3MHz • 2 IOAPIC (2.5V) @ 33.3 MHz • 2 Hublink clocks (3.3 V) @ 66.6 MHz • 2 USB (3.3V) @ 48 MHz ( Non s.

  ICS9250-22   ICS9250-22







Frequency Generator & Integrated Buffers

Integrated Circuit Systems, Inc. ICS9250-22 Frequency Generator for P IV™ Recommended Application: P IV Chipset Support Output Features: • 4 Differential CPU Clock Pairs @ 3.3V • 2 - 3V MREF clocks for memory reference seeds, (separate single ended but 180 degrees out of phase) • 4 - 66MHz reference output • 10 - 3V 33MHz PCI clocks • 2 - 48MHz clocks • 2 - 14.318 reference output Features: • Support power management: Power Down Mode • Supports Spread Spectrum modulation: 0 to -0.5% down spread. • Uses external 14.318MHz crystal • Select logic for Differential Swing Control, Test mode, Tristate, Power down, Spread Spectrum, limited frequency select, selective clock enable. • External resistor for current reference • FS pins for frequency select Key Specifications: • 3V66 Output jitter <300ps • CPU Output Jitter <200ps • MREF Output jitter <250ps Pin Configuration GND MULTSEL0/REF MULTSEL1/REF VDDREF X1 X2 GNDREF PCICLK0 PCICLK1 VDDPCI PCICLK2 PCICLK3 GNDPCI PCICLK4 PCICLK5 VDDPCI PCICLK6 PCICLK7 GNDPCI PCICLK8 PCICLK9 VDDPCI SEL100/133 GND48 FS0/48MHz FS1/48MHz VDD48 PD# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 VDDMREF 3VMREF 3VMREF_B GNDMREF SPREAD# CPUCLKST3 CPUCLKSC3 VDDCPU CPUCLKST2 CPUCLKSC2 GNDCPU CPUCLKST1 CPUCLKSC1 VDDCPU CPUCLKST0 CPUCLKSC0 GNDCPU I REF VDDA GNDA VDD3V66 3V66-3 3V66-2 GND3V66 GND3V66 3V66-1 3V66-0 VDD3V66 56-Pin 300mil SSOP & TSSO.


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