HD151TS303RP

Rev.6.00 Apr 07, 2006 page 2 of 8

Pin Arrangement

(Top view)

8

SEL1

1

7

CLKOUT

6

SEL0

5

XOUT

SSCCLKOUT

2

VDD

3

GND

4

XIN

SSC Function Table

SEL1 :0

Spread Percentage

0 0

+0.5%

0 1

±1.5%

1 0

SSC OFF

1 1

±0.25%

Note:

±1.5% SSC is selected for default by internal pull-up & down resistors.

Clock Frequency Table

XIN (MHz)

SSCCLKOUT (MHz)

CLKOUT (MHz)

48

24

*1

48

*2

24

12

*1

24

*2

Notes: 1. With spread spectrum modulation.

2. Without spread spectrum modulation.

Pin Descriptions

Pin name

No.

Type

Description

GND

3

Ground

GND pin

VDD

2

Power

Power supplies pin. Normally 3.3 V.

CLKOUT

7

Output

Normally 3.3 V reference clock output.

SSCCLKOUT

1

Output

Spread spectrum modulated clock output.

This pin outputs 1/2 frequency of input frequency.

XIN

4

Input

Oscillator input.

XOUT

5

Output

Oscillator output.

SEL0

6

Input

SSC mode select pin. LVCMOS level input.

Pull-up by internal resistor. (100 k

Ω).

SEL1

8

Input

SSC mode select pin. LVCMOS level input.

Pull-down by internal resistor (100 k

Ω).