Philips Semiconductors

Preliminary specification

PCK2010

CK98 (100/133MHz) Spread Spectrum System Clock

Generator

1999 Mar 01

6

CLOCK ENABLE CONFIGURATION

CPUSTOP

PWRDWN

PCISTOP

CPUCLK

CPUDIV2

APIC

3V66

PCI

PCIF

REF 48MHz

OSC

VCOs

X

0

X

LOW

LOW

LOW

LOW

LOW

LOW

LOW

OFF

OFF

0

1

0

LOW

ON

ON

LOW

LOW

ON

ON

ON

ON

0

1

1

LOW

ON

ON

LOW

ON

ON

ON

ON

ON

1

1

0

ON

ON

ON

ON

LOW

ON

ON

ON

ON

1

1

1

ON

ON

ON

ON

ON

ON

ON

ON

ON

NOTES:

1. LOW means outputs held static LOW as per latency requirement below

2. ON means active.

3. PWRDWN pulled LOW, impacts all outputs including REF and 48MHz outputs.

4. All 3V66 clocks as well as CPU clocks should stop cleanly when CPUSTOP is pulled LOW.

5. CPUDIV2, IOAPIC, REF, 48MHz signals are not controlled by the CPUSTOP functionality and are enabled all in all conditions except when

PWRDWN is LOW.

POWER MANAGEMENT REQUIREMENTS

SG

SG

S

LATENCY

SIGNAL

SIGNAL STATE

NO. OF RISING EDGES OF FREE RUNNING

PCICLK

CPUSTOP

0 (DISABLED)

1

1 (ENABLED)

1

PCISTOP

0 (DISABLED)

1

1 (ENABLED)

1

PWRDWN

1 (NORMAL OPERATION)

3ms

0 (POWER DOWN)

2 MAX

NOTES:

1. Clock ON/OFF latency is defined as the number of rising edges of free running PCICLKs between the clock disable goes HIGH/LOW to the

first valid clock that comes out of the device.

2. Power up latency is when PWRDWN goes inactive (HIGH) to when the first valid clocks are driven from the device.

In accordance with the Absolute Maximum Rating System (IEC 134)

SYMBOL

PARAMETER

CONDITION

LIMITS

UNIT

SYMBOL

PARAMETER

CONDITION

MIN

MAX

UNIT

DC 3.3V core supply voltage

–0.5

+4.6

V

DC 3.3V I/O supply voltage

–0.5

+4.6

V

DC 2.5V I/O supply voltage

–0.5

+3.6

V

DC input diode current

–50

mA

DC input voltage

Note 2

–0.5

5.5

V

DC output diode current

±50

mA

DC output voltage

Note 2

–0.5

V

DC output source or sink current

±50

mA

Storage temperature range

–65

+150

°C

Power dissipation per package

plastic medium-shrink (SSOP)

For temperature range: –40 to +125

°C

above +55

°C derate linearly with 11.3mW/K

850

mW

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the

device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to

absolute-maximum-rated conditions for extended periods may affect device reliability.

2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.