Si52202 datasheet(4/71 Pages) SILABS

Part #	Si52202

Description	12/8/4/2-Output PCI-Express Gen 1/2/3/4 and SRIS Clock Generator

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Manufacturer	SILABS [Silicon Laboratories]

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4 / 71 page

Table of Contents

1. Feature List ................................ 2

2. Ordering Guide

.............................. 3

2.1 Technical Support ............................ 3

3. Functional Block Diagrams .......................... 6

4. Electrical Specifications ........................... 8

5. Functional Description ........................... 19

5.1 Crystal Recommendations

.........................19

5.2 Crystal Loading .............................19

5.3 Calculating Load Capacitors .........................20

5.4 PWRGD/PWRDNb (Power Down) Pin......................21

5.5 PWRDNb (Power Down) Assertion .......................21

5.6 PWRDNb (Power Down) Deassertion ......................21

5.7 OEb Pin ................................21

5.8 OEb Assertion..............................21

5.9 OEb Deassertion .............................21

5.10 FS Pin ................................22

6. Test and Measurement Setup

........................ 23

7. PCIe Clock Jitter Tool

........................... 25

8. Control Registers ............................. 26

8.1 I2C Interface ..............................26

8.2 Block Read/Write .............................26

8.3 Block Read ...............................26

8.4 Block Write ...............................27

8.5 Byte Read/Write .............................27

8.6 Byte Read ...............................27

8.7 Byte Write ...............................28

8.8 Data Protocol ..............................29

8.9 Register Tables .............................31

8.9.1 Si52212 Registers ..........................31

8.9.2 Si52208 Registers ..........................34

8.9.3 Si52204 Registers ..........................37

8.9.4 Si52202 Registers ..........................40

9. Pin Descriptions

............................. 43

9.1 Si52212 Pin Descriptions ..........................43

9.2 Si52208 Pin Descriptions ..........................46

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