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Multimedia ICs

Clock generator

BU2185F

This IC generates the different clock used for DVD. Generates clocks for CD use, sound use, and MPEG use.

DVD players

1) By connecting a crystal oscillating element, the dif-

ferent clock signals are generated.

2) Enables selection of the reference clock directly or

with 1 / 2 output.

3) SOP 16-pin package.

4) Single 3.3V power supply.

5) With the standard clock output, an independent 5V

power supply can be applied for a 5V output.

DATA1A

XTAL1

OSC

XTAL2

OSC

PLL1

PLL2

DATA1B

DATA2A

DATA2B

XTAL1 IN

XTAL1 OUT

CTRL1

CTRL2

XTAL2 IN

XTAL 2OUT

OE

H

SW

L

1 / 2

CLK2

(27.0000MHz )

CLK1

(36.8640MHz)

(18.4320MHz)

CLK3

(33.8688MHz)

CTRL1

CTRL2

L

L

H

H

H

L

H

L

H

L

H

L

DATA1A

DATA1A

DATA1B

DATA1B

DATA2A

DATA2A

DATA2B

DATA2B

SW

PLL1

PLL2

DATA1A = XTAL2

DATA1B = XTAL2

DATA2A = XTAL2

DATA2B = XTAL2