CY28409ZXC datasheet(11/17 Pages) CYPRESS

Part #	CY28409ZXC

Description	Clock Synthesizer with Differential SRC and CPU Outputs

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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11 / 17 page

CY28409

Document #: 38-07445 Rev. *D

Page 11 of 17

FS_A, FS_B

VTT_PWRGD#

PWRGD_VRM

VDD Clock Gen

Clock State

Clock Outputs

Clock VCO

0.2-0.3 ms

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

Figure 9. VTT_PWRGD# Timing Diagram

VTT_PWRGD# = Low

Delay

>0.25 ms

S1

Power Off

S0

VDDA = 2.0V

Sample

Inputs straps

S2

Normal

Operation

Wait for <1.8 ms

Enable Outputs

S3

VTT_PWRGD# = toggle

VDDA = off

Figure 10. Clock Generator Power-up/Run State Diagram

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CY28409ZXC Datasheet(PDF) 11 Page - Cypress Semiconductor

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