background image

TS3USB221/A/E EVM

TS3USB221/A/E

www.ti.com

Introduction

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.

This evaluation module is designed to demonstrate the small printed circuit board (PCB) areas that can be
achieved when designing with the TS3USB221/A/E USB switches. It is powered from the 5-V rail of the
USB input. Additionally, the TS3USB221/A/E provides an output enable input and an output select input
for flexible configuration of the USB. See

Figure 1

for the EVM block diagram.

Figure 1. TS3USB221/A/E EVM Block Diagram

2.1

List of Hardware Items for Operation

The following items are required for EVM evaluation:

The TS3USB221/A/E EVM

USB cables with connector type depending on the surrounding system

The following items are optional for EVM evaluation:

USB type A or type B connectors to change connectors J1 through J5 for optimal system interface
configuration

IBM compatible PC with USB 2.0 ports for quick start evaluation

3

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

Copyright © 2009, Texas Instruments Incorporated

Summary of Contents for TS3USB221

Page 1: ...onfiguration 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 Bot...

Page 2: ...tion on proper handling see the Electrostatic Discharge ESD application note SSYA008 The information in a caution or a warning is provided for your protection Please read each caution and warning care...

Page 3: ...d from the 5 V rail of the USB input Additionally the TS3USB221 A E provides an output enable input and an output select input for flexible configuration of the USB See Figure 1 for the EVM block diag...

Page 4: ...memory stick etc to J4 and J5 on the EVM 5 To select USB downstream device 1 connected to J4 make sure J6 is shunted with a jumper To select USB downstream device 2 connected to J5 make sure J6 is ope...

Page 5: ...on Table 1 EVM Jumper Description Jumper Functionality Configuration Shunt J6 to select output 1 J6 TS3USB221 A E Select Open J6 to select output 2 Shunt J7 to enable the switch J7 TS3USB221 A E Enabl...

Page 6: ...ACE 2 TOP CONDUCTOR 2 4 1 0 7 5 47 72 EDGE 7 5 85 004 3 DIELECTRIC 4 4 1 0 035 4 GND PLANE 1 2 1 0 YES 5 DIELECTRIC 48 4 1 0 035 6 VCC PLANE 1 2 1 0 YES 7 DIELECTRIC 4 4 1 0 035 7 5 47 72 EDGE 7 5 85...

Page 7: ...Schematics Figure 4 EVM Schematic 7 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 Feedba...

Page 8: ...ayout Figure 5 Top Silkscreen Assembly 8 TS3USB221 A E High Speed USB 2 0 480 Mbps 1 2 Multiplexer Demultiplexer SCDU001A July 2009 Revised October 2009 Switch Evaluation Module Submit Documentation F...

Page 9: ...6 Top Metal High Speed Differential 9 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 Fee...

Page 10: ...igure 7 Internal Ground Plane 10 TS3USB221 A E High Speed USB 2 0 480 Mbps 1 2 Multiplexer Demultiplexer SCDU001A July 2009 Revised October 2009 Switch Evaluation Module Submit Documentation Feedback...

Page 11: ...Figure 8 Internal Power Plane 11 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...

Page 12: ...Bottom Metal Low Speed Single Ended 12 TS3USB221 A E High Speed USB 2 0 480 Mbps 1 2 Multiplexer Demultiplexer SCDU001A July 2009 Revised October 2009 Switch Evaluation Module Submit Documentation Fe...

Page 13: ...re 10 Bottom Silkscreen Assembly 13 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 Feedba...

Page 14: ...85 33 IC 150mA LDO regulator SOT23 5 LP2985 33DBV TI 4 Related Documentation TS3USB221 High Speed USB 2 0 480Mbps 1 2 Multiplexer Demultiplexer Switch with Single Enable data sheet SCDS220F TS3USB221A...

Page 15: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

Reviews: