CY2285 datasheet(4/9 Pages) CYPRESS

Part #	CY2285

Description	100-MHz Pentium짰II Clock Synthesizer/Driver with Spread Spectrum for Mobile PCs

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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CY2285

4

Function Table: CY2285-1

SEL100

SEL48[4]

TS[4]

SPREAD[4]

CPUCLK[0:1]

PCICLK[1:5],

PCICLK_F

USB_IOCLK

USBCLK

REFCLK [0-1]

X

0

X

Hi-Z

0

1

1 (no spread)

66.6 MHz

33.3 MHz

24 MHz

48 MHz

14.318 MHz

00

1

0 (–0.6%

downspread)

66.6 MHz

33.3 MHz

48 MHz

14.318 MHz

1

1 (no spread)

100 MHz

33.3 MHz

24 MHz

48 MHz

14.318 MHz

10

1

0 (–0.6%

downspread)

100 MHz

33.3 MHz

48 MHz

14.318 MHz

Function Table: CY2285-2

SEL100/66[4]

SPREAD

DIV4

CPUCLK [0:1]

PCICLK[1:5],

PCICLK_F,

EPCICLK

USBCLK

REFCLK[0:1]

00 (–0.6% downspread)

1

66.67 MHz

33.3 MHz

48 MHz

14.318 MHz

0

1 (no spread)

1

66.67 MHz

33.3 MHz

48 MHz

14.318 MHz

10 (–0.6% downspread)

1

100 MHz

33.3 MHz

48 MHz

14.318 MHz

1

1 (no spread)

1

100 MHz

33.3 MHz

48 MHz

14.318 MHz

00 (–0.6% downspread)

0

16.67 MHz

8.33 MHz

48 MHz

14.318 MHz

0

1 (no spread)

0

16.67 MHz

8.33 MHz

48 MHz

14.318 MHz

10 (–0.6% downspread)

0

25.0 MHz

8.33 MHz

48 MHz

14.318 MHz

1

1 (no spread)

0

25.0 MHz

8.33 MHz

48 MHz

14.318 MHz

Function Table: CY2285-3

SEL100

SEL48[4]

TS[4]

SPREAD[4]

CPUCLK[0:1]

PCICLK[1:5],

PCICLK_F

USB_IOCLK

USBCLK

REFCLK1

X

0

X

Hi-Z

0

1

1 (no spread)

66.6 MHz

33.3 MHz

24 MHz

48 MHz

14.318 MHz

00

1

0 (–0.6%

downspread)

66.6 MHz

33.3 MHz

48 MHz

14.318 MHz

1

1 (no spread)

100 MHz

33.3 MHz

24 MHz

48 MHz

14.318 MHz

10

1

0 (–0.6%

downspread)

100 MHz

33.3 MHz

48 MHz

14.318 MHz

Note:

4.

Power-on strap option.

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