3

ICS952301

Advance Information

0673—07/09/02

ICS952301 Power Management Requirements

CPU

PCI

Byte 0

PCICLK

PCICLK

24

48

REF

PD#

STOP#

STOP#

Bit 0

CPUCLK

0

Not Free

Run

Free-Run

MHz

MHZ

0

X

X

X

STOP

LOWLOW

LOWLOW

LOWLOW

1

0

1

0

RUN

STOP

RUN

RUN

RUN

RUN

RUN

1

1

0

0

RUN

RUN

STOP

RUN

RUN

RUN

RUN

1

1

1

1

RUN

Tri-State

Tri-State

Tri-State

Tri-State

Tri-State

Tri-State

Note:

If Byte 3 bit [7:2]=0 Not Free-Run, can be controlled by PCI_STOP#

If Byte 3 bit [7:2]=1 Free-Run, cannot controlled by PCI_STOP#

VCO