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Texas Instruments HPL-D SLLU064A, User Manual

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Texas Instruments HPL-D SLLU064A User Manual Download Page 14

2  Setup and Required Equipment 
 

 

2-2

 

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DATA,  DATA

Amplitude:  400 mV

Offset:  0.0 V

DATA,  DATA

Amplitude:  400 mV

Offset:  0.0 V

Power Supply #1

Power Supply #2

3.3V

1.2V

+

-

+

-

SCOPE

(internally

terminated

 50      to GND)

Ω

Ω

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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. 

 

Summary of Contents for HPL-D SLLU064A

Page 1: ...January 2004 HPL D SLLU064A 4x4 Crosspoint Switch EVM U s e r s G u i d e User s Guide ...

Page 2: ...e a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of information in TI data books or data sheets is permissible only if reproduction is wi...

Page 3: ... the handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER F...

Page 4: ... If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is designed to operate properly with certain components above 60 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transis...

Page 5: ...ers fabrication notes and bill of materials Related Documentation from Texas Instruments SN65LVDS125A 4x4 1 5 Gbps LVDS Crosspoint Switch Data Sheet SLLS595 SN65LVDS250 4x4 2 5 Gbps LVDS Crosspoint Switch Data Sheet SLLS594 If You Need Assistance www ti com E mail technical support http www k ext ti com sc technical_support email_tech_support asp Product Information Centers Americas 972 644 5580 A...

Page 6: ...for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments may cause interference with radio communications in which case the user at his expense will be required to take whatever measures may be required to correct this i...

Page 7: ...ut 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 C...

Page 8: ...re 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 ...

Page 9: ...r 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 Page 1 1 Sample Functional Configurations 1 2 1 2 Signal Paths 1 4 ...

Page 10: ...0 S 4 1 C onfigura tion E x a m ple s 1 Y 1 Z 1 A 1 B 2 Y 2 Z 2 A 2 B 3 Y 3 Z 3 A 3 B 4 Y 4 Z 4 A 4 B 1 Y 1 Z 1 A 1 B 2 Y 2 Z 3 Y 3 Z 4 Y 4 Z 1 Y 1 Z 1 A 1 B 2 Y 2 Z 3 Y 3 Z 3 A 3 B 4 Y 4 Z 1 Y 1 Z 1 A 1 B 2 Y 2 Z 3 Y 3 Z 4 A 4 B 4 Y 4 Z S 1 0 S 1 1 S 2 0 S 2 1 S 3 0 S 3 1 S 4 0 S 4 1 S 1 0 S 1 1 S 2 0 S 2 1 S 3 0 S 3 1 S 4 0 S 4 1 S 1 0 S 1 1 S 2 0 S 2 1 S 3 0 S 3 1 S 4 0 S 4 1 0 0 0 1 1 0 1 1 0 ...

Page 11: ...A 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 4x4 Crosspoint Switch EVM SN65LVDS125A SN65LVDS250 4X4 Crosspoint Switch EVM A W 6456526 A ...

Page 12: ...g 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 U1 1 J18 J20 VTERM GND J 4 J 3 J 1 J 2 J15 J16 J14 J13 W12 VCC W11 2DE VCC 1DE J19 VCC01 J11 J12 W 9 W10 3DE VCC 4DE VCC J 9 J10 W 6 W 5 W 7 W 8 VCC S40 VCC VCC S41 VCC S30 S31 J 7 J 8 J 6 J 5 J17 VCC VCC W 2 W 1 W 4 W 3 VCC S10 S11 VCC VCC S20 S21 Fi...

Page 13: ... can be used to evaluate the device output characteristics The typical setup for the 4x4 crosspoint switch EVM is shown in Figure 2 1 2 1 Applying an Input While the use of a split power plane allows the EVM to be terminated within the oscilloscope offsetting the EVM ground requires the inputs to the device to also be offset Figure 2 1 shows how to offset the EVM and the inputs to the device Setti...

Page 14: ...W2 W1 W4 W3 VCC S10 S11 VCC VCC S20 S21 DATA DATA Amplitude 400 mV Offset 0 0 V DATA DATA Amplitude 400 mV Offset 0 0 V Power Supply 1 Power Supply 2 3 3V 1 2V SCOPE internally terminated 50 to GND Ω Ω Ω Ω GND GND GND GND GND GND GND GND GND GND GND GND Figure 2 1 EVM Power Connections for Either SN65LVDS125A or SN65LVDS250 Evaluation Many possible configurations for the 4x4 crosspoint switches ar...

Page 15: ...0 0 1A 1B 0 0 1A 1B 0 0 1A 1B 0 0 1A 1B 0 1 2A 2B 0 1 2A 2B 0 1 2A 2B 0 1 2A 2B 1 0 3A 3B 1 0 3A 3B 1 0 3A 3B 1 0 3A 3B 1 1 4A 4B 1 1 4A 4B 1 1 4A 4B 1 1 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 See Figure 2 2 LVDS LVPECL or CML Vterm Vterm 5...

Page 16: ...V to the EVM Power supply 2 is used to offset the EVM ground relative to the device under test DUT ground With this power scheme the common mode voltage seen by either the SN65LVDS125A or the SN65LVDS250 is approximately equal to that of the oscilloscope thus preventing significant common mode current flow Using dual supplies and offsetting the EVM ground relative to the DUT ground are simply step...

Page 17: ...2 Setup and Required Equipment 2 5 Figure 2 3 Typical Test Results ...

Page 18: ...2 Setup and Required Equipment 2 6 ...

Page 19: ...ruction This chapter presents the schematics board layouts fabrication information and the bill of materials Topic Page 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 ...

Page 20: ...3 2 3 1 Schematic Figure 3 1 4x4 Crosspoint Switch EVM Schematic SN65LVDS125A or SN65LVDS250 U1 ...

Page 21: ...3 EVM Construction 3 3 3 2 Board Layout Patterns Figure 3 2 4x4 Crosspoint Switch EVM Board Layout 4X4 Crosspoint Switch EVM SN65LVDS125A SN65LVDS250 A W 6456526 ...

Page 22: ...3 4 Figure 3 3 Layer 1 Signal Plane ...

Page 23: ...3 EVM Construction 3 5 Figure 3 4 GND Plane Figure 3 5 Layer 3 Vcc ...

Page 24: ...3 6 Figure 3 6 Layer 4 Vcc01 Plane Figure 3 7 Layer 5 GND Plane ...

Page 25: ...3 EVM Construction 3 7 Figure 3 8 Layer 6 GND Signal Plane ...

Page 26: ...7 SMOBC HASL 8 LPI SOLDERMASK BOTH SIDES USING APPROPRIATE LAYER ARTWORK COLOR GREEN 9 LPI SILKSCREEN AS REQUIRED COLOR WHITE 10 VENDOR INFORMATION TO BE INCORPORATED ON BACK SIDE WHENEVER POSSIBLE 11 MINIMUM COPPER CONDUCTOR WIDTH IS 0 009 MINIMUM CONDUCTOR SPACING IS 0 006 12 NUMBER OF FINISHED LAYERS 6 13 ALL 8 MIL HOLES TO BE PLUGGED AND COPLANAR TO SURFACE 14 SPACING BETWEEN LAYERS 1 AND 2 SH...

Page 27: ... 2 2 2 10 µF 7343 C11 C16 7 1 1 1 1 µF 603 C22 8 2 2 2 1 µF 1206 C15 C20 9 12 12 12 3 pos jumper W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 10 8 8 8 49 9 Ω uninstalled 402 R6 R7 R9 R10 R12 R13 R15 R16 11 8 8 8 49 9 Ω 402 R1 R2 R3 R4 R17 R18 R19 R20 12 2 2 2 68 µF Cap 592D R C12 C17 13 4 4 4 Banana jack J17 J18 J19 J20 14 16 16 16 SMA PCB MT MOD SMA END 50 Ω J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J...

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