cy28551-3 Cypress Semiconductor Corporation., cy28551-3 Datasheet - Page 19

• Manufacturer Part Number: cy28551-3
• Description: Universal Clock Generator For Intel, Via And Sis
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-05677 Rev. *D
VDD Clock Gen
VTT_PWRGD#
PWRGD_VRM
Clock Outputs
Clock State
VDD_A = 2.0V
Clock VCO
FS_[D:A]
Power Off
S0
State 0
Off
Off
0.2-0.3 ms
Figure 11. VTT_PWRGD# Timing Diagram
Figure 12. VTT_PWRGD# Timing Diagram
State 1
Delay
VDD_A = off
0.25 ms
Delay >
VTT_PWRGD#
S1
Wait for
On
VTT_PWRGD# = toggle
VTT_PWRGD# = Low
Operation
Normal
Sample Sels
S3
State 2
Inputs straps
On
State 3
Sample
Enable Outputs
S2
VTT_PWRGD# is ignored
Wait for <1.8 ms
Device is not affected,
CY28551-3
Page 19 of 29
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