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CY28419 Datasheet(PDF) 10 Page - Cypress Semiconductor

Part No. CY28419
Description  Clock Synthesizer with Differential SRC and CPU Outputs
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY28419 Datasheet(HTML) 10 Page - Cypress Semiconductor

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CY28419
Document #: 38-07444 Rev. *D
Page 10 of 16
FS_A, FS_B
VTT_PWRGD#
PWRGD_VRM
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
Off
On
On
State 1
Device is not affected,
VTT_PWRGD# is ignored
Figure 5. VTTPWRGD Timing Diagram
VTT_PWRGD# = Low
Delay
>0.25mS
S1
Power Off
S0
VDD_A = 2.0V
Sample
Inputs straps
S2
Normal
Operation
Wait for <1.8ms
Enable Outputs
S3
VTT_PWRGD# = toggle
VDD_A = off
Figure 6. Clock Generator Power-up/Run State Diagram


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