Information as of 2000-01-10
 Latest information online 

PCK2000; CK97 (66/100 MHz) System Clock Generator

• Description • Features • Datasheet • Products, packages, availability and ordering • Find similar products

To be kept informed on PCK2000, subscribe to eNews.

Description

The PCK2000 is a clock synthesizer/driver chip for a Pentium Pro or other similar processors.

The PCK2000 has four CPU clock outputs at 2.5V. There are eight PCI clock outputs running at 33MHz. One of the PCI clock outputs is free-running. Additionally, the part has two 3.3V USB clock outputs at 48MHz, two 2.5V IOAPIC clock outputs at 14.318MHz, and three 3.3V reference clock outputs at 14.318MHz. All clock outputs meet Intel’s drive strength, rise/fall time, jitter, accuracy, and skew requirements.

The part possesses dedicated powerdown, CPUSTOP, and PCISTOP input pins for power management control. These inputs are synchronized on-chip and ensure glitch-free output transitions. When the CPUSTOP input is asserted, the CPU clock outputs are driven LOW. When the PCISTOP input is asserted, the PCI clock outputs are driven LOW, except for free running PCICLK_F clock output.

Finally, when the PWRDWN input pin is asserted, the internal reference oscillator and PLLs are shut down, and all outputs are driven LOW.

The PCK2000 is available in a 48-pin SSOP package.

Features

• Mixed 2.5V and 3.3V operation
• Four CPU clocks at 2.5V
• Eight synchronous PCI clocks at 3.3V, one free-running
• Two 2.5V IOAPIC clocks @ 14.318 MHz
• Two 3.3V 48MHz USB clock outputs
• Three 3.3V reference clocks @ 14.318 MHz
• Reference 14.31818 MHz Xtal oscillator input
• 100 MHz or 66 MHz operation
• Part provides frequencies for Pentium Pro and Pentium II^TM motherboards
• Power management control input pins
• 175 ps CPU clock jitter
• 175 ps skew on outputs
• 1.5 - 4 ns CPU-PCI delay
• Power down if PWRDWN is held LOW
• Available in 48-pin SSOP package
• See PCK2000M for 28-pin mobile version

Datasheet

Type nr.	Title	Publication release date	Datasheet status	Page count	File size (kB)	Datasheet
PCK2000	CK97 (66/100 MHz) System Clock Generator	29-Sep-98	Product Specification	14	90	Open

Products, packages, availability and ordering

Partnumber	Order code (12nc)	marking/packing	package	device status	buy online
PCK2000DGG	9352 617 30112	Standard marking * tube	DYB	DEV	-
	9352 617 30118	Standard marking * reel pack, SMD, 13"	DYB	DEV	-
PCK2000DL	9352 617 29112	Standard marking * tube	SOT370	RFS	-
	9352 617 29118	Standard marking * reel pack, SMD, 13"	SOT370	RFS	-

Please note, devices listed in the "Products, packages, availability and ordering" table marked with "WIT" are discontinued. Devices marked with "DOD" will be in the near future.
Contact your nearest sales or distributor office for the latest information on product status and availability.

Find similar products:

 PCK2000 links to the similar products page containing an overview of products that are similar in function or related to the part number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and products from the same functional category.