AMERICAN MICROSYSTEMS, INC.

May 2000

This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.

5.23.00

FS6330

FS6330

FS6330

FS6330

LAN Hub Clock Generator IC

LAN Hub Clock Generator IC

LAN Hub Clock Generator IC

LAN Hub Clock Generator IC

Preliminary Information

Preliminary Information

Preliminary Information

Preliminary Information

ISO9001

ISO9001

ISO9001

ISO9001

1.0

Features

•

Develops all the high-speed clocks required for LAN

Hub applications

•

Clock skew on CLKB1:4 clocks < 250ps

•

Period jitter: 150ps pk-pk typical

•

Available in 20-pin SSOP and TSSOP packages

Figure 2: Pin Configuration

X1

VDD

CLKF

SEL1

CLKG

VSS

VDD

X2/REFIN

VSS

SEL0

1

12

2

3

4

5

6

7

8

11

VDD

9

10

CLKB4

VDD

CLKB3

VSS

CLKA

CLKB2

CLKB1

VSS

16

15

14

13

20

19

18

17

CLKC

Figure 1: Block Diagram

Crystal

Oscillator

FS6330

CLKA

X2/REFIN

X1

PLL

1

PLL

2

PLL

3

CLKB1:4

CLKC

CLKF

CLKG

Table 1: Frequency Table

FONT

CRYSTAL

SEL1

SEL0

CLKA

CLKB[1:4]

CLKC

CLKF

CLKG

0

0

25.000MHz

50.000MHz

66.667MHz

100.000MHz

125.000MHz

0

1

25.000MHz

50.000MHz

75.000MHz

125.000MHz

125.000MHz

1

0

25.000MHz

50.000MHz

83.333MHz

125.000MHz

125.000MHz

FS6330-01

25MHz

1

1

25.000MHz

50.000MHz

100.000MHz

100.000MHz

125.000MHz