11525-801 View Datasheet(PDF) - AMI Semiconductor

Part Name

Description

Manufacturer

11525-801

Clock Generator IC for Intel Pentium® II 440BX PC100 Systems

AMI Semiconductor 

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April 1999

Figure 13: DC Measurement Points

3.3V

VOH 3.3 = 2.4V

1.5V

VOL 3.3 = 0.4V

(device

interface)

VIH 3.3 = 2.0V

VIL 3.3 = 0.8V

(system

interface)

A. 3.3V Clock Interface

Figure 14: Clock Skew Diagrams

VOH 2.5 = 2.0V

1.25V

VOL 2.5 = 0.4V

(device

interface)

2.5V

VIH 2.5 = 1.7V

VIL 2.5 = 0.7V

(system

interface)

B. 2.5V Clock Interface

CPU 1.25V

2.5V

tCP skw

PCI

1.5V

3.3V

CPU 1.25V

2.5V

tCC skw

1.25V

CPU

2.5V

PCI 1.5V

3.3V

tPP skw

PCI 1.5V

3.3V

REF 1.5V

3.3V

tRI skw

1.25V

IOAPIC

2.5V

2.5V to 3.3V Clock Offset

2.5V to 2.5V Clock Skew

3.3V to 3.3V Clock Skew

3.3V to 2.5V Clock Offset

Figure 15: Timing Diagrams

τKP

tR

tF

tKH

2.4V

1.5V

tKL

0.4V

Duty Cycle

A. 3.3V Clock Interface

tR

tKH

τKP

tF

tKL

Duty Cycle

B. 2.5V Clock Interface

2.0V

1.25V

0.4V

4.5.99

,62

15

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