Texas Instruments HPL-D SLLU064A manual X4 Crosspoint Switch Signal Paths

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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

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Contents Users Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Read This First About This ManualFCC Warning Contents FiguresTables Overview Sample Functional Configurations X4 Crosspoint Switch EVM Signal Paths X4 Crosspoint Switch Signal PathsSetup and Required Equipment Applying an InputSetup and Required Equipment Termination for Interfacing LVDS, CML, or Lvpecl Drivers Observing an Output Typical Test ResultsTypical Test Results Setup and Required Equipment EVM Construction Schematic X4 Crosspoint Switch EVM SchematicX4 Crosspoint Switch EVM Board Layout Board Layout PatternsLayer 1-Signal Plane GND Plane Layer 4-Vcc01 Plane Layer 6-GND/Signal Plane PCB Fabrication Requirements and Stack Up Bill of Materials Bill of Materials for SN65LVDS125A / SN65LVDS250 EVM