CY28378 Cypress Semiconductor, CY28378 Datasheet - Page 17

• Manufacturer Part Number: CY28378
• Description: FTG for Pentium 4 and Intel 845 Series Chipset
• Manufacturer: Cypress Semiconductor

Document #: 38-07519 Rev. **
Switching Waveforms
Note:
Duty Cycle Timing
6.
VDD Clock Gen
VTT_PWRGD#
Device is not affected, VTT_PWRGD# is ignored.
PWRGD_VRM
Clock Outputs
FS_A, FS_B
Clock State
Clock VCO
VDDA = 2.0V
Power Off
S0
(Single-ended Output)
State 0
Off
Off
t
1A
Figure 7. Clock Generator Power-up/Run State Diagram
t
1B
0.2-0.3mS
State 1
Delay
Figure 6. VTT_PWRGD# Timing Diagram
VDDA = off
>0.25mS
VTT_PWRGD#
Delay
S1
Wait for
On
VTT_PWRGD# = toggle
VTT_PWRGD# = Low
Operation
Sample Sels
Normal
State 2
S3
[6]
Inputs straps
On
State 3
Sample
Enable Outputs
S2
VTT_PWRGD# is ignored
Wait for 1.146ms
Device is not affected,
CY28378
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