Manuals / Texas Instruments / Computer Equipment / Switch

Texas Instruments HPL-D SLLU064A manual 3. 4x4 Crosspoint Switch Signal Paths, Overview

Models: HPL-D SLLU064A

1 27

Download 27 pages 55.11 Kb

Page 12

1.2 Signal Paths

1 Overview

1.2 Signal Paths

The signal paths on this EVM (see Figure 1-3) include:

❏Sixteen edge-launch SMA connectors (J1–J16) for high-speed data transmission

❏Eight jumpers (W1– W8) for active switch logic control

❏Four jumpers (W9–W12) for enabling and disabling the outputs

❏Three banana jacks (J17, J18, J19) for power and ground connections. Banana jack J20 is used for non-LVDS type configurations.

	J14	J13
J15	VCC	VCC
	1DE	2DE
		J19
	W12	W11

J12	J11
	VCC	J10
	3DE
	W10

J16

J18	J20
GND	VTERM
W1	W2

J1	VCC	VCC
	S10	S11

W3	W4
VCC	VCC
S20	S21
J2

VCC01

U1

1

J17

VCC

VCC

4DE

J9

W9

W7	W8
VCC	VCC
S40	S41
	J8

W5 W6

VCC	VCC
S30	S31	J7
		J7

J3	J4	J5	J6
		`

Figure 1-3. 4x4 Crosspoint Switch Signal Paths

1-4

Image 12

Texas Instruments HPL-D SLLU064A manual 3. 4x4 Crosspoint Switch Signal Paths, Overview

Contents

SLLU064A 4x4 Crosspoint Switch EVMUsers Guide JanuaryIMPORTANT NOTICE ProductsApplications EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS How to Use This Manual Read This FirstPreface About This ManualFCC Warning Contents FiguresContents Figure 2-2. Termination for Interfacing LVDS, CML, or LVPECL DriversTables Tables1 Overview Chapter1.1 Sample Functional Configurations 1 OverviewFigure 1-2. 4x4 Crosspoint Switch EVM Figure 1-2 shows the 4x4 crosspoint switch EVM part numberSN65LVDS125A or SN65LVDS250 installed and a copy of the data sheet SN65LVDS125A SN65LVDS250 4X4 Crosspoint Switch EVM1.2 Signal Paths Figure 1-3. 4x4 Crosspoint Switch Signal Paths1 Overview 2 Setup and Required Equipment 2.1 Applying an InputChapter 2 Setup and Required Equipment SCOPE internally terminated 50 Ω to GNDTable 2-1 Crosspoint Function Table Figure 2-2. Termination for Interfacing LVDS, CML, or LVPECL Drivers2 Setup and Required Equipment 2.2 Observing an Output 2.3 Typical Test Results2 Setup and Required Equipment Note Power SupplyFigure 2-3. Typical Test Results 2 Setup and Required Equipment2 Setup and Required Equipment 3 EVM Construction ChapterEVM Construction 3.1 Schematic Figure 3-1. 4x4 Crosspoint Switch EVM SchematicFigure 3-2. 4x4 Crosspoint Switch EVM Board Layout 3.2 Board Layout Patterns4X4 Crosspoint Switch EVM 3 EVM ConstructionFigure 3-3. Layer 1-Signal Plane Figure 3-4. GND Plane Figure 3-5. Layer 3-Vcc 3 EVM ConstructionFigure 3-6. Layer 4-Vcc01 Plane Figure 3-7. Layer 5-GND Plane Figure 3-8. Layer 6-GND/Signal Plane 3 EVM Construction3.3 PCB Fabrication Requirements and Stack Up 3.4 Bill of Materials Table 3-2. Bill of Materials for SN65LVDS125A / SN65LVDS250 EVM3 EVM Construction