CY28410 Cypress Semiconductor, CY28410 Datasheet - Page 10

• Manufacturer Part Number: CY28410
• Description: Clock Generator for Intel Grantsdale Chipset
• Manufacturer: Cypress Semiconductor

Document #: 38-07593 Rev. *C
FS_A, FS_B,FS_C
VDD Clock Gen
VTT_PW RGD#
PW RGD_VRM
Clock Outputs
Clock State
Clock VCO
CPUC, 133MHz
CPUT, 133MHz
SRCC 100MHz
SRCT 100MHz
VDD _A = 2.0V
USB, 48MHz
PCI, 33MHz
DOT96C
DOT96T
P ow er O ff
REF
S0
PD
State 0
Off
Off
Figure 6. Clock Generator Power-up/Run State Diagram
Figure 4. Power-down Deassertion Timing Waveform
0.2-0.3mS
State 1
Delay
Figure 5. VTT_PWRGD# Timing Diagram
VD D_A = off
>0.25m S
<300µS, >200mV
Tdrive_PW RDN#
VTT_PW RGD#
D elay
Tstable
<1.8nS
S1
W ait for
On
VTT_PW RG D # = toggle
VTT_PW R G D# = Low
O peration
N orm al
Sample Sels
S3
State 2
Inputs straps
On
State 3
S am ple
Enable O utputs
S2
W ait for <1.8m s
VTT_PW RGD# is ignored
Device is not affected,
CY28410
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