IDTCV104B datasheet, PDF - EEWORLD Datasheet

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IDTCV104B: DescriptionCLOCK GENERATOR FOR DESKTOP PC PLATFORMS; File Size96KB，21 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDTCV104B Overview

CLOCK GENERATOR FOR DESKTOP PC PLATFORMS

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IDTCV104B

CLOCK GENERATOR FOR DESKTOP PC PLATFORMS

COMMERCIAL TEMPERATURE RANGE

CLOCK GENERATOR FOR

DESKTOP PC PLATFORMS

IDTCV104B

PRELIMINARY

FEATURES:

•

DESCRIPTION:

4 PLL architecture

Linear frequency programming

Independent frequency programming and SSC control

Band-gap circuit for differential output

High power-noise rejection ratio

66MHz to 533MHz CPU frequency

VCO frequency up to 1.1G

Support index block read/write, single cycle index block read

Programmable REF, 3V66, PCI, 48MHz I/O drive strength

Programmable 3V66 and PCI Skew

Available in SSOP package

IDTCV104B is a 48 pin clock generation device for desktop PC platforms.

This chip incorporates four PLLs to allow independent generation of CPU, AGP/

PCI, SRC, and 48MHz clocks. The dedicated PLL for Serial ATA clock

provides high accuracy frequency. This device also implements Band-gap

referenced I

REF

to reduce the impact of V

variation on differential outputs,

which can provide more robust system performance.

Static PLL frequency divide error can be as low as 36 ppm, providing high

accuracy output clock. Each CPU, AGP/PCI, SRC clock has its own Spread

Spectrum selection.

KEY SPECIFICATION:

•

CPU/SRC CLK cycle to cycle jitter < 125ps

SATA CLK cycle to cycle jitter < 125ps

PCI CLK cycle to cycle jitter < 250ps

Static PLL frequency divide error as low as 36ppm

FUNCTIONAL BLOCK DIAGRAM

PLL1

SSC

EasyN

Programming

CPU CLK

Output Buffers

CPU[1:0]

XTAL

Osc Amp

REF

REF 3.1.0

PLL2

SSC

EasyN

Programming

SDATA

SCLK

SM Bus

Controller

3V66/PCI

Output Buffers

PCI[5:0], PCIF[2:0]

3V66[3:0]

PLL3

SSC

TT_PWRGD

Watch Dog

Timer

FS[1:0]

Control

Logic

SRC CLK

Output Buffer

SRC

REF

48MHz[1:0]

24_48#

PLL4

48MHz

Output Buffer

24 - 48MHz

RESET#

OUTPUT TABLE

CPU (Pair)

3V66

3V66/VCH

PCI

PCIF

REF

48MHz

24 - 48MHz

SRC (Pair)

Reset#

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

COMMERCIAL TEMPERATURE RANGE

SEPTEMBER 2003

DSC-6382/16

IDTCV104B Related Products

	IDTCV104B	IDT74CV104BPV
Description	CLOCK GENERATOR FOR DESKTOP PC PLATFORMS	CLOCK GENERATOR FOR DESKTOP PC PLATFORMS

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