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User's Guide

SCDU001A–July 2009–Revised October 2009

TS3USB221/A/E High Speed USB 2.0 (480 Mbps) 1:2

Multiplexer/Demultiplexer Switch Evaluation Module

Contents

1 Preface ....................................................................................................................... 2

2 Introduction .................................................................................................................. 3

3 EVM Configuration and Description ...................................................................................... 5

4 Related Documentation ................................................................................................... 14

List of Figures

1 TS3USB221/A/E EVM Block Diagram ................................................................................... 3

2 Quick Start Evaluation...................................................................................................... 4

3 Jumpers J6, J7, and J8 Configuration ................................................................................... 5

4 EVM Schematic ............................................................................................................. 7

5 Top Silkscreen/Assembly .................................................................................................. 9

6 Top Metal (High-Speed Differential) .................................................................................... 10

7 Internal Ground Plane .................................................................................................... 11

8 Internal Power Plane...................................................................................................... 12

9 Bottom Metal (Low-Speed Single-Ended).............................................................................. 13

10 Bottom Silkscreen/Assembly............................................................................................. 13

List of Tables

1 EVM Jumper Description................................................................................................... 5

2 EVM Connector Description ............................................................................................... 5

3 Board Stack-Up ............................................................................................................. 6

4 Bill of Materials............................................................................................................. 14

SCDU001A–July 2009–Revised October 2009 TS3USB221/A/E High Speed USB 2.0 (480 Mbps) 1:2 Multiplexer/Demultiplexer

Switch Evaluation Module

Submit Documentation Feedback

Summary of content (15 pages)

PAGE 1
User's Guide SCDU001A – July 2009 – Revised October 2009 TS3USB221/A/E High Speed USB 2.0 (480 Mbps) 1:2 Multiplexer/Demultiplexer Switch Evaluation Module 1 2 3 4 Contents Preface ....................................................................................................................... 2 Introduction .................................................................................................................. 3 EVM Configuration and Description ..........................................
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Preface www.ti.com 1 Preface 1.1 About This Manual This user’s guide describes the TS3USB221/A/E Evaluation Module (EVM). This guide contains the EVM schematics, bill of materials, assembly drawings, and top and bottom board layouts. 1.2 How to Use This Manual This document contains the following chapters: • Chapter 1 – Preface • Chapter 2 – Introduction and Quick Start • Chapter 2 – EVM Configuration and Description • Chapter 3 – Related Documents 1.2.
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Introduction www.ti.com 2 Introduction The TS3USB221/A/E EVM is an evaluation module for the Texas Instruments (TI) 1:2 multiplexer/demultiplexer high-bandwidth USB switches. It is specially designed for high-speed USB 2.0 signals, supports bidirectional signaling, and offers high-bandwidth (1.1 GHz). When interfacing other USB devices with this EVM, the switch allows signals to pass with minimum edge and phase distortion as well as little or no signal attenuation.
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Introduction 2.2 www.ti.com Quick Start TS3USB221/A/E EVM TS3USB221/A/E Figure 2. Quick Start Evaluation 1. 2. 3. 4. Connect the PC to the USB connector J3 through a USB cable. Make sure the 3.3-V LDO output is enabled by opening J8 without a jumper. Make sure the TS3USB221/A/E IC is enabled by shunting J7 with a jumper. Connect two USB downstream devices (for example, mouse, keyboard, USB memory stick, etc) to J4 and J5 on the EVM. 5.
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EVM Configuration and Description www.ti.com 3 EVM Configuration and Description 3.1 EVM Description To conform to the USB 2.0 specification, the differential traces D+ and D- lines on the board are impedance matched to 90-Ω differential. The trace length of the through-path and the trace length through the TS3USB221/A/E switch are also matched for comparison purpose. The PCB is a simple four-layer top-side populated board (see the schematic and PCB layout in Section 3.4 and Section 3.5).
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EVM Configuration and Description 3.3 www.ti.com Board Stack-Up Table 3 shows the board stack-up. Table 3. Board Stack-Up Subclass Name Type TOP CONDUCTOR 2.4 1 0 DIELECTRIC 4 4.1 0.035 1 2 GND 5 6 VCC 7 8 9 6 Dielectric Constant Loss Tangent Shield Width (mils) Impedance Coupling (Ω) Type Spacing (mils) Diff Zo (Ω) SURFACE 3 4 Thickness (mils) BOTTOM PLANE 1.2 1 0 DIELECTRIC 48 4.1 0.035 PLANE 1.2 1 0 DIELECTRIC 4 4.1 0.035 CONDUCTOR 2.4 1 0 7.5 47.
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EVM Configuration and Description www.ti.com 3.4 Schematics Figure 4. EVM Schematic SCDU001A – July 2009 – Revised October 2009 Submit Documentation Feedback TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description 3.5 www.ti.com PCB Layout Figure 5. Top Silkscreen/Assembly 8 TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description www.ti.com Figure 6. Top Metal (High-Speed Differential) SCDU001A – July 2009 – Revised October 2009 Submit Documentation Feedback TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description www.ti.com Figure 7. Internal Ground Plane 10 TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description www.ti.com Figure 8. Internal Power Plane SCDU001A – July 2009 – Revised October 2009 Submit Documentation Feedback TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description www.ti.com Figure 9. Bottom Metal (Low-Speed Single-Ended) 12 TS3USB221/A/E High Speed USB 2.
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EVM Configuration and Description www.ti.com Figure 10. Bottom Silkscreen/Assembly SCDU001A – July 2009 – Revised October 2009 Submit Documentation Feedback TS3USB221/A/E High Speed USB 2.
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Related Documentation 3.6 www.ti.com Bill of Materials Table 4. Bill of Materials 4 Count RefDes Value Description Size Part Number Manufacturer 2 J1, J3 – USB Connector Type A – AU-Y1005 Assmann Electronics Inc 3 J2, J4, J5 – USB Connector Type B – 67068-9000 Molex / Waldom Electronics 3 J6, J7, J8 – Header, 2x1pin, 100mil spacing 100 mil x 100 mil PEC36SAAN Sullins Connector Solutions 2 C1, C4 1.0 μF Capacitor, Ceramic, 1.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.