VT98501

Advance Information

2001-03-05

Page 2

MDST-0009-00

Vaishali Semiconductor

1300 White Oaks Road, Ste 200

Campbell

CA 95008

Ph. 408.377.6060

Fax 408.377.6063

Table 2. Examples of Common Output Frequencies.

Output

20

24

30

32

33.33

37.5

40

48

Input

10

12

10

16

16.66

12

10

12

Selection (S1,S0)

M,M

M,M

1,M

M,M

M,M

M,1

0,0

0,0

Output

50

60

62.5

64

66.66

72

75

80

Input

16.66

10

20

16

16.66

12

12

10

Selection (S1,S0)

1,M

1,0

M,1

0,0

0,0

1,0

M,0

1,1

Output

83.33

90

100

106.25

120

125

155.52

Input

16.66

15

20

20

15

20

19.44

Selection (S1,S0)

0,1

1,0

0,1

0,M

1,1

M,0

1,1

Table 3. Pin Description

No.

Name

Type

Description

1

X1/ICLK

I

Xtal connection or clock input.

2

VDD

P

Connect to +3.3V

3

GND

P

Connect to ground.

4

S1

TI

Select 1 for output clock. Connect to ground or VDD or float

5

CLK

O

Clock output per table 2.

6

S0

TI

Select 0 for output clock. Connect to ground or VDD or float.

7

OE

I

Output Enable. Tri- states CLK output when low.

8

X2

O

Xtal connection. Leave unconnected for clock input.

Legend:

I = Input

TI = Tri-level Input

O = Output

P = Power supply connection

Table 1. Clock Output Table

S1

S0

CLK

Minimum Input

0

0

4 x input

See table 7

0

M

5.3125 x input

20 MHz

0

1

5 x input

See table 7

M

0

6.25 x input

4 MHz

M

M

2 x input

See table 7

M

1

3.125 x input

8 MHz

1

0

6 x input

See table 7

1

M

3 x input

See table 7

1

1

8 x input

See table 7

0 = Connect to ground.

1 = Connect directly to VDD

M = Leave unconnected (floating)