ICS650-07C

NETWORKING CLOCK SOURCE

CLOCK SYNTHESIZER

IDT™ / ICS™ NETWORKING CLOCK SOURCE

3

ICS650-07C

REV D 102709

For a 25 MHz Fundamental Crystal or Clock Input, use the following tables:

A Clocks Select Table (MHz)

C Clocks Select Table (MHz)

0 = connect directly to ground

1 = connect directly to VDD

M = leave unconnected (automatically self biases to VDD/2)

B Clocks Select Table (MHz)

REFOUT = 25 MHz

ACS1

ACS0

CLKA1

CLKA2

0

0

100

OFF (low)

0

M

TEST

TEST

01

75

OFF (low)

1

0

33.3333

16.6667

1

M

TEST

TEST

1

1

66.6667

33.3333

CCS

CLKC1

CLKC2

0

125

125

M

TEST

TEST

175

75

BCS1

BCS0

CLKB1

CLKB2

0

0

TEST

TEST

0

M

66.6667

33.3333

0

1

100

50

1

0

83.3333

41.6667

1

M

TEST

TEST

1

1

133.3333

66.6667