ICS951601 datasheet(1/11 Pages) RENESAS

Part #	ICS951601

Description	General Purpose Frequency Timing Generator

PDF	11 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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ICS951601

Preliminary Product Preview

0663C—10/04/05

Block Diagram

General Purpose Frequency Timing Generator

Recommended Application:

General Purpose Clock Generator

Output Features:

•

17 - PCI clocks selectable,

either 33.33MHz or 66.6MHz @ 3.3V

•

1 - 48MHz @ 3.3V

•

1 - REF @ 3.3V, 14.318MHz.

Features:

•

Programable Spread spectrum precentage for EMI

control

•

Uses external 14.318MHz crystal

•

Select pins for frequency select

PLL2

PLL1

Spread

Spectrum

48MHz

PCI1A (7:0)

PCI2A (2:0)

PCI1B (2:0)

PCI2B (2:0)

8

3

X1

X2

XTAL

OSC

PCI

DIVDER

PCI

DIVDER

PCI

DIVDER

PCI

DIVDER

SDATA

SCLK

SELA (2:1)

SELB (2:1)

SPREAD

Control

Logic

Config.

Reg.

REF0

Power Groups:

VDDA = Analog Power

GNDA = Analog Ground

Key Specifications:

•

PCI – PCI output skew within same bank @

33MHz: <170ps

•

PCI – PCI output skew within same bank@ 66MHz:

<340ps

•

Cycle to Cycle Jitter PCI @ 33MHz: <200ps

•

Cycle to Cycle Jitter PCI @ 66MHz: <200ps

•

Cycle to Cycle Jitter 48MHz: <350ps

•

Cycle to Cycle Jitter REF: <500ps

•

Slew Rate: 1.5 - 4 V/ns. (PCI spec.)

Pin Configuration

48-pin SSOP

*120K ohm pull-up to VDD on indicated inputs.

REF0

VDD

X1

X2

GND

SDATA

SCLK

GNDA

VDDA

SEL1A

PCI1A_0

PCI1A_1

VDD33

GND

PCI1A_2

PCI1A_3

GND

VDD33

PCI1A_4

PCI1A_5

VDD33

GND

PCI1A_6

PCI1A_7

48MHz

GND

VDD48

SPREAD

VDDA

GNDA

SEL2B

PCI2B_2

PCI2B_1

GND

VDD66

PCI2B_0

SEL2A

PCI2A_2

PCI2A_1

VDD2A

GND

PCI2A_0

SEL1B

PCI1B_2

PCI1B_1

GND

VDD1B

PCI1B_0

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

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