National Semiconductor LMH0303 User Manual Download Page 24 | Manualshive

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270 Mbps EYE – Channel 0 – Negative – Color Bar - Amplitude

270 Mbps EYE – Channel 0 – Positive – Color Bar – Amplitude

SD303/SD307 EVK User Guide

24 of 27

Rev 1.2

© 2010, National Semiconductor Corp.

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Summary of Contents for LMH0303

Page 1: ...two cable drivers share the same evaluation board SD303 SD307 The SD303 SD307 evaluation board silk screen shows the LMH0307 pin name terminology Table 1 shows the pin name differences between the LMH0307 and LMH0303 The LMH0303 has a single output channel SDO SDO The LMH0307 has that same output channel and refers to it as SDO0 SDO0 In addition the LMH0307 adds a second output channel SDO1 SDO1 T...

Page 2: ...Figure 1 SD303 SD307 Evaluation Board SD303 SD307 EVK User Guide 2 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 3: ...ctly if this jumper block is not in place Separate jumpers may be used but they must be placed to connect the following pins of JP1 RSTI pins 5 6 ENABLE pins 7 8 SDA pins 9 10 SCL pins 11 12 SD HD pins 13 14 FAULT pins 15 16 and RSTO pins 17 18 This jumper block or individual jumpers may be removed to control the LMH0303 LMH0307 pins externally but then the microcontroller will no longer be able t...

Page 4: ...LMH0307 cannot determine the state of the output termination and the LEDs will be off When a valid input signal is applied the Termination Fault detectors will show the correct state of their termination If the cable driver is disabled or if the output channel is powered down the Termination Fault LEDs will be off LOS The LOS LED shows the status of the input signal detector The LOS LED is Green t...

Page 5: ...erminated TF0P 1 Termination Fault on SDO0 Termination Fault not valid channel is powered down or no input signal detected D10 TF0N Off TF0N 0 SDO0 properly terminated TF0N 1 Termination Fault on SDO0 Termination Fault not valid channel is powered down or no input signal detected D11 LOS Red LOS 1 signal detected at input LOS 0 no input signal detected N A Shows the default value after the board i...

Page 6: ...alled to the selected location 7 Uncheck Launch Analog LaunchPAD and select the Finish button The ALP software will start if Launch Analog LaunchPAD is checked but it will not be useful until the USB driver is installed Power on the SD303 SD307 evaluation board with a 3 3 VDC power supply Numerous LEDs will turn on and the POWER LED will flash Red Connect the PC and the SD303 SD307 evaluation boar...

Page 7: ... shown below for the LMH0307 If it does not see Trouble Shooting at the end of this document Figure 2 ALP Startup Screen for LMH0307 LMH0303 LMH0307 Profiles There are separate profiles for the LMH0303 and the LMH0307 The ALP software automatically detects which device is connected and configures the profile accordingly There are four application tabs for the LMH0303 LMH0307 device Information Tab...

Page 8: ...d LMH0307 Tab The LMH0303 LMH0307 tabs present a high level view of the cable driver Figure 4 shows this tab for the LMH0307 and Figure 5 shows this tab for the LMH0303 SD303 SD307 EVK User Guide 8 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 9: ...Figure 4 LMH0307 Main Tab Figure 5 LMH0303 Main Tab SD303 SD307 EVK User Guide 9 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 10: ...e cable driver is reading the Termination Faults based on the current Termination Fault Threshold settings Perfectly terminated outputs should read back 0 and unterminated outputs should read back 31 Control Refresh The Refresh button provides a manual refresh of the state from the evaluation board to the LMH0303 LMH0307 tab Changes to the board will not be reflected in the LED icons and Line Cont...

Page 11: ...epresent the LED state on the board Note that either the Refresh button or the Auto Refresh checkbox must be used to update the LED icons in the LMH0303 LMH0307 tab to reflect any board changes FAULT LED The FAULT LED shows the current state of the FAULT pin The FAULT LED is Green to indicate no faults are detected FAULT 1 and Red to indicate one or more faults have been detected FAULT 0 The Auto ...

Page 12: ... and the Refresh All will read all registers in the device Changes may be made to the registers by checking or un checking the individual register bits or typing in a new register value in the Value field After setting the appropriate register value the Apply button must be pressed to apply the changes The detailed view of the STATUS register is shown in Figure 7 with Verbose Descriptions checked ...

Page 13: ...307 Registers Tab without Verbose Descriptions The Display button provides another view of the register set and is depicted in Figure 9 The Display dialog supports the Windows copy command Ctrl c SD303 SD307 EVK User Guide 13 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 14: ...m the Agilent 86130A 3 6G BERT The input signal is connected differentially to the SDI SMA inputs on the evaluation board with matched 3 SMA cables The LMH0307 is running in HD 3G mode SD HD 0 The SDO0 output is connected through 1m of Belden 1694A cable to the TCA75 input module on the Tektronix DSA 71254 12 5 GHz Oscilloscope SDO0 is terminated with a 75Ω BNC terminator Test Results Figure 8 sho...

Page 15: ...Figure 10 LMH0307 SDO0 Output Waveform at 2 97 Gbps SD303 SD307 EVK User Guide 15 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 16: ...unchPAD No Devices Error It may also be that the USB driver is not installed Check the device manager There should be an NSC ALP Nano Atmel device under the Universal Serial Bus Controllers as shown below in Figure 12 Figure 12 Windows XP Analog LauchPAD USB Driver SD303 SD307 EVK User Guide 16 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 17: ...ion status bar as shown in Figure 13 Figure 13 Analog LaunchPAD in Demo Mode Disable the demo mode by selecting the Preferences pull down menu and un checking Enable Demo Mode Figure 14 Analog LaunchPAD Preferences Menu After demo mode is disabled the ALP software will poll the ALP hardware The ALP software will update and have only LMH0303 or LMH0307 under the Devices pull down menu SD303 SD307 E...

Page 18: ...Figure 15 Analog LaunchPAD Screen with Demo Mode Off SD303 SD307 EVK User Guide 18 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 19: ...cing Tyco Electronics 87215 7 JP2 1 7x2 Header 0 100 spacing Tyco Electronics 87215 4 L1 L2 L3 L4 4 6 8nH Inductor 0402 Murata LQP15MN6N8B02D Q1 1 MOSFET P Ch 12V 4 3A SOT 23 International Rectifier IRLML6401TRPBF R1 R2 R3 R4 R5 R6 R7 R8 8 75 ohm Resistor 1 1 16W 0402 ROHM MCR01MZPF75R0 R11 1 750 ohm Resistor 1 1 16W 0402 Vishay CRCW0402750RFKED R12 R13 R14 R15 R32 R33 R34 R35 R36 R37 10 10k ohm R...

Page 20: ...wing transition times and jitter are shown for 2 97 Gbps Amplitude measurements are shown for the outputs at 270 Mbps Equipment HP 8722ES Network Analyzer Agilent DCA J 86100C Scope BertScope Digital Synthesis Conditions Nominal supply and room temperature connection cables only ORL Plot Channel 0 Negative SD303 SD307 EVK User Guide 20 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 21: ...ORL Plot Channel 0 Positive ORL Plot Channel 1 Positive SD303 SD307 EVK User Guide 21 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 22: ...ORL Plot Channel 1 Negative Smith Chart Channel 0 Positive SD303 SD307 EVK User Guide 22 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 23: ...2 97Gbps EYE Channel 0 Positive Transition Times 2 97Gbps EYE Channel 0 Positive Jitter SD303 SD307 EVK User Guide 23 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 24: ...270 Mbps EYE Channel 0 Negative Color Bar Amplitude 270 Mbps EYE Channel 0 Positive Color Bar Amplitude SD303 SD307 EVK User Guide 24 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 25: ...270 Mbps EYE Channel 1 Negative Color Bar Amplitude 270 Mbps EYE Channel 1 Positive Color Bar Amplitude Schematic SD303 SD307 EVK User Guide 25 of 27 Rev 1 2 2010 National Semiconductor Corp ...

Page 26: ...red LED GA 1 RA 2 GK 3 RK 4 D8 BiColored LED DVCC DVCC DVCC DVCC DVCC VCC GND VCC VCC GND VCC VCC VCC VCC GND GND GND GND RSTObar FAULT RSTObar FAULT SCL SDA RSTIbar ENABLE SDO0bar SDO0 SDO1bar SDO1 SDI SDIbar GCDLED RCDLED RTF0NLED GTF0NLED GTF0PLED RTF0PLED GTF1PLED RTF1PLED GTF1NLED RTF1NLED VCC GND GTF1NLED RTF1NLED GTF1PLED RTF1PLED GTF0NLED RTF0NLED GTF0PLED RTF0PLED GCDLED RCDLED SD HDbar D...

Page 27: ...VCC GND GND GND GND GND GND DVCC DVCC GND GND GND GND GND GND GND D 6 GND 5 C 4 A 1 GND 2 B 3 D13 CEBS0624V G GND GND SAVE RESETbar ENABLE_SW SD HDbar_SW MODE_SW RSTI_SW DVCC DVCC DVCC DVCC DVCC DVCC GND GND GND GND GND GND USB Power Enable SD HDbar MODE RSTObar RSTIbar A1 1 A2 2 K2 3 A3 4 A4 5 K1 6 D14 BAS40DW05 7 5 9 11 8 10 12 3 1 2 4 6 14 13 JP2 HEADER 7X2 GND DVCC GND GND 1 FD0 1 FD1 1 FD2 R3...

Page 28: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments SD303EVK NOPB SD307EVK NOPB ...

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