PI6C49003 datasheet(1/12 Pages) PERICOM

номер детали	PI6C49003

подробное описание детали	Networking Clock Generator

PDF	12 Pages

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производитель	PERICOM [Pericom Semiconductor Corporation]

домашняя страница	http://www.pericom.com

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1

PS9023A

11/20/09

Block Diagram

PI6C49003

Networking Clock Generator

Features

• 3.3V +/-10% Supply Voltage

• Uses 25MHz xtal such as Saronix-eCera™ SRX7278

• Five PCIe® 100MHz outputs with optional -0.5% spread

spectrum support

• Two LVCMOS 50MHz outputs that support +/- 10%

frequency margining

• One frequency selectable 33/66/133MHz LVCMOS output

• One 32.256MHz LVCMOS output

• Industrial temperature -40°C to 85°C

• Package: 48-pin TSSOP package

Description

The PI6C49003 is a clock generator device intended for PCIe®/

networking applications. The device includes ﬁve 100MHz

differential Host Clock Signal Level (HCSL) outputs for PCIe,

two single-ended 50 MHz outputs, one single-ended 32.256MHz

output, and one selectable single-ended 33/66/133 MHz output.

Using a serially programmable SMBUS interface, the PI6C49003

incorporates spread spectrum modulation on the ﬁve 100 MHz

HCSL PCIe outputs, and independent frequency margining on the

50MHz output, 33.3333MHz and 66.6666MHz clock outputs.

Pin Conﬁguration

VDD

14

5

100M_OUT(0-4)

50M_OUT(1-2)

33/66/133M_OUT1

32.256M_OUT1

ISET

475 Ohms

1%

GND

10

PD_RESET

SDATA

SCLK

PLL, Dividers,

Buffers, and

Logic

Clock Buffer/

Crystal

Oscillator

25 MHz

crystal or

clock input

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

VDD

IREF

NC

VDD

GND

VDD

GND

VDD

SCLK

SDATA

GND

50M_Out1

50M_Out2

VDD

GND

VDD

32.256M_Out1

GND

NC

PD_RESET

GND

VDD

100M_Q0-

100M_Q0+

100M_Q1+

100M_Q1-

VDD

GND

VDD

100M_Q2+

100M_Q2-

100M_Q3+

100M_Q3-

VDD

GND

VDD

100M_Q4+

100M_Q4-

33/66/133M_Out1

VDD

GND

VDD

X2

X1

09-0097

Аналогичный номер детали - PI6C49003

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