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Summary of Contents for Texas Instruments HPL-D SLLU064A
- Page 1 4x4 Crosspoint Switch EVM r ' s User's Guide January 2004 HPL-D SLLU064A...
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Page 2: Important Notice
TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products... - Page 3 Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design–, marketing–, and/or manufacturing–...
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2003 - 2004, Texas Instruments Incorporated...
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Page 5: Read This First
Typical hardware setup and results are discussed in Chapter 2. Chapter 3 provides schematics, the board layout, the board layers, fabrication notes, and bill of materials Related Documentation from Texas Instruments SN65LVDS125A, 4x4 1.5 Gbps LVDS Crosspoint Switch Data Sheet (SLLS595). - Page 6 Korea 080-551-2804 Malaysia 1-800-80-3973 Netherlands (English) +31 (0) 546 87 95 45 New Zealand 0800-446-934 Phillippines 1-800-765-7404 Singapore 800-886-1028 Spain +34 902 35 40 28 Sweden (English) +46 (0) 8587 555 22 Taiwan 0800-006800 Thailand 001-800-886-0010 United Kingdom +44 (0) 1604 66 33 99 FCC Warning This equipment is intended for use in a laboratory test environment only.
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Page 7: Table Of 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... - Page 8 Tables Figure 3-6. Layer 4–Vcc01 Plane ...3-6 Figure 3-7. Layer 5–GND Plane ...3-6 Figure 3-8. Layer 6–GND/Signal Plane...3-7 Tables Table 2-1 Crosspoint Function Table...2-3 Table 3-2. Bill of Materials for the SN65LVDS125A / SN65LVDS250...3-9...
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Page 9: Overview
This chapter provides a high-level description of the 4x4 crosspoint switch EVM mounted with either a SN65LVDS125A, 4x4 1.5-Gbps or a SN65LVDS250, 4x4 2.5-Gbps crosspoint switch. Topic 1.1 Sample Functional Configurations 1.2 Signal Paths Chapter 1 1 Overview Page... -
Page 10: Sample Functional Configurations
1.1 Sample Functional Configurations The 4x4 crosspoint switch is a fully non-blocking switch that provides flexibility in switch configuration for the desired application. A sample of various functions for which the EVMs can be configured is shown in Figure 1-1. S 1 0 S 1 1 S 3 0... -
Page 11: Figure 1-2. 4X4 Crosspoint Switch Evm
Figure 1-2 shows the 4x4 crosspoint switch EVM (part number SN65LVDS125A or SN65LVDS250). The EVM comes with either the SN65LVDS125A or SN65LVDS250 installed and a copy of the data sheet. The latest version of the data sheet is also available from www.ti.com. Figure 1-2. -
Page 12: Signal Paths
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 ❏... -
Page 13: Setup And Required Equipment
Chapter 2 2 Setup and Required Equipment Both the SN65LVDS125A and the SN65LVDS250 LVDS driver output characteristics are compliant with the requirements of the TIA/EIA-644 standard. LVDS drivers nominally provide a 350-mV differential signal, with a 1.2-V offset from ground. These levels are attained when driving a 100-Ω differential line-termination test load. -
Page 14: Figure 2-1. Evm Power Connections For Either Sn65Lvds125A Or Sn65Lvds250 Evaluation
DATA, DATA Amplitude: 400 mV Offset: 0.0 V DATA, DATA Amplitude: 400 mV Offset: 0.0 V Figure 2-1. EVM Power Connections for Either SN65LVDS125A or SN65LVDS250 Evaluation. Many possible configurations for the 4x4 crosspoint switches are made available. Table 2-1 provides a description of the different functions and the required selector settings. -
Page 15: Table 2-1 Crosspoint Function Table
Table 2-1 Crosspoint Function Table Output Channel 1 Output Channel 2 Control Input Control Pins Selected Pins 1Y/1Z 1A/1B 2A/2B 3A/3B 4A/4B Apply inputs to the SMA connectors J1–J8. The EVM comes with 50-Ω resistors installed to VTERM, providing a termination scheme easily adjusted to accommodate LVDS, LVPECL, or CML output structures. -
Page 16: Observing An Output
2.2 Observing an Output In order to minimize the parasitic capacitance in high-speed measurements (probe capacitance), the 4x4 crosspoint switch EVM provides an offset power plane (layer 5). This power plane allows the user to offset the device so that the common-mode output is compatible with the 50 ohms to ground termination within the scope. -
Page 17: Figure 2-3. Typical Test Results
2 Setup and Required Equipment Figure 2-3. Typical Test Results. - Page 18 2 Setup and Required Equipment...
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Page 19: Evm Construction
3 EVM Construction This chapter presents the schematics, board layouts, fabrication information, and the bill of materials. Topic 3.1 Schematic 3.2 Board Layout Patterns 3.3 PCB Fabrication Requirements and Stack Up 3.4 Bill of Materials Chapter 3 Page... -
Page 20: Schematic
3.1 Schematic Figure 3-1. 4x4 Crosspoint Switch EVM Schematic... -
Page 21: Board Layout Patterns
3.2 Board Layout Patterns A/W # 6456526 Figure 3-2. 4x4 Crosspoint Switch EVM Board Layout SN65LVDS125A SN65LVDS250 4X4 Crosspoint Switch EVM... -
Page 22: Figure 3-3. Layer 1-Signal Plane
Figure 3-3. Layer 1–Signal Plane... -
Page 23: Figure 3-4. Gnd Plane
3 EVM Construction Figure 3-4. GND Plane Figure 3-5. Layer 3–Vcc... -
Page 24: Figure 3-6. Layer 4–Vcc01 Plane
Figure 3-6. Layer 4–Vcc01 Plane Figure 3-7. Layer 5–GND Plane... -
Page 25: Figure 3-8. Layer 6–Gnd/Signal Plane
3 EVM Construction Figure 3-8. Layer 6–GND/Signal Plane... -
Page 26: Pcb Fabrication Requirements And Stack Up
3.3 PCB Fabrication Requirements and Stack Up Notes: 1. PWB TO BE FABRICATED TO MEET OR EXCEED IPC-6012, CLASS 3 STANDARDS AND WORKMANSHIP SHALL CONFORM TO IPC-A-600, CLASS 3 CURRENT REVISIONS 2. BOARD MATERIAL AND CONSTRUCTION TO BE UL APPROVED AND MARKED ON THE FINISHED BOARD. 3. -
Page 27: Bill Of Materials
3.4 Bill of Materials Table 3-2. Bill of Materials for SN65LVDS125A / SN65LVDS250 EVM Item 6456526-1 6456526-2 6456526-3 Description Pattern 0.001 µF 0.01 µF 0.1 µF 0.1 µF 1206 100 Ω (uninstalled) 10 µF 7343 1 µF 1 µF 1206 3 pos jumper 49.9 Ω...
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