CY28346ZC-2T datasheet(11/19 Pages) SPECTRALINEAR

Part #	CY28346ZC-2T

Description	Clock Synthesizer with Differential CPU Outputs

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Manufacturer	SPECTRALINEAR [SpectraLinear Inc]

Direct Link	http://www.spectralinear.com

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11 / 19 page

CY28346-2

Rev 1.0, November 20, 2006

Page 11 of 19

Iout is selectable depending on implementation. The param-

eters above apply to all configurations. Vout is the voltage at

the pin of the device.

The various output current configurations are shown in the

host swing select functions table. For all configurations, the

deviation from the expected output current is ±7% as shown in

the current accuracy table.

PCI_STP#

PCIF

PCI

setup

t

Figure 7. PCI_STP# Deassertion Waveforms

Figure 8. VTT_PWRGD# Timing Diagram

VID

SEL

VTT_PWRGD#

PWRGD

VDD Clock Gen

Clock State

Clock Outputs

Clock VCO

0.2-0.3mS

Delay

State 0

State 2

State 3

Wait for

VTT_PWRGD#

Sample Sels

Off

On

State 1

Device is not affected,

VTT_PWRGD# is ignored.

VTT_PWRGD# = Low

Delay

>0.25mS

S1

Power Off

S0

VDDA = 2.0V

Sample

Inputs straps

S2

Normal

Operation

Wait for <1.8ms

Enable Outputs

S3

VTT_PWRGD# = toggle

VDD3.3= off

Figure 9. Clock Generator Power-up/Run State Program

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CY28346ZC-2T Datasheet(PDF) 11 Page - SpectraLinear Inc

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