Contents

Read This First

iii

About This Manual

iii

How to Use This Manual

iii

Related Documentation from Texas Instruments

iii

If You Need Assistance

iii

FCC Warning

iv

Contents

...........................................................................................................................

v

Figures

v

Tables

vi

1 Overview

1-1

1.1

Sample Functional Configurations

1-2

1.2

Signal Paths

1-4

2 Setup and Required Equipment

2-1

2.1

Applying an Input

2-1

2.2

Observing an Output

2-4

2.3

Typical Test Results

2-4

3 EVM Construction

3-1

3.1

Schematic

3-2

3.2

Board Layout Patterns

3-3

3.3

PCB Fabrication Requirements and Stack Up

3-8

3.4

Bill of Materials

3-9

Figures

Figure 1-1. Sample Functional Configurations of the 4x4 Crosspoint Switch

1-2

Figure 1-2. 4x4

Crosspoint Switch EVM

1-3

Figure 1-3. 4x4

Crosspoint Switch Signal Paths

1-4

Figure 2-1. EVM Power Connections for Either SN65LVDS125A or SN65LVDS250

 

Evaluation

2-2

Figure 2-2. Termination for Interfacing LVDS, CML, or LVPECL Drivers

2-3

Figure 2-3. Typical Test Results

2-5

Figure 3-1. 4x4

Crosspoint Switch EVM Schematic

3-2

Figure 3-2.

4x4

Crosspoint Switch EVM Board Layout

3-3

Figure 3-3.

Layer 1–Signal Plane

3-4

Figure 3-4. GND Plane

3-5

Figure 3-5.

Layer 3–Vcc

3-5

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Texas Instruments HPL-D SLLU064A manual Contents, Figures