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SD303EVK / SD307EVK

LMH0303 / LMH0307

Evaluation Board User Guide

National Semiconductor

EVK User Manual

February 3, 2010

Overview

The SD303/SD307 Evaluation Kit (EVK) enables evaluation of the LMH0303 3G/HD/SD SDI Cable Driver with

Cable Detect or the LMH0307 3G/HD/SD SDI Dual Cable Driver with Cable Detect. A graphical user interface

allows managing the SMBus registers of the LMH0303 or LMH0307 device.

Evaluation Kit (SD303EVK / SD307EVK) Contents

The EVK contains the following parts:

• SD303/SD307 EVK board assembly with either the LMH0303 or LMH0307 cable driver

• USB cable

• SD303/SD307 EVK User Guide

Evaluation Board Description

The evaluation board comes in two versions, depending on the cable driver installed:

1) SD303 with the LMH0303 cable driver

2) SD307 with the LMH0307 dual cable driver

The 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

¯¯¯¯¯

Table 1. LMH0307 and LMH0303 Pin Name Comparison

Reference LMH0307 Name LMH0307 Description LMH0303 Name LMH0303 Description

J3 SDO0 Channel 0 true output SDO True output

J4 SDO0¯¯¯¯¯ Channel 0 complement output SDO¯¯¯¯ Complement output

J5 SDO1 Channel 1 true output

J6 SDO1¯¯¯¯¯ Channel 1 complement output

D9 TF0P SDO0 Termination Fault TFP SDO Termination Fault

D10 TF0N SDO0¯¯¯¯¯ Termination Fault TFN SDO¯¯¯¯ Termination Fault

D8 TF1P SDO1 Termination Fault

D7 TF1N SDO1¯¯¯¯¯ Termination Fault

Figure 1 shows the SD303/SD307 evaluation board.

SD303/SD307 EVK User Guide 1 of 27

Summary of content (28 pages)

PAGE 1
SD303EVK / SD307EVK National Semiconductor EVK User Manual LMH0303 / LMH0307 Evaluation Board User Guide February 3, 2010 Overview The SD303/SD307 Evaluation Kit (EVK) enables evaluation of the LMH0303 3G/HD/SD SDI Cable Driver with Cable Detect or the LMH0307 3G/HD/SD SDI Dual Cable Driver with Cable Detect. A graphical user interface allows managing the SMBus registers of the LMH0303 or LMH0307 device.
PAGE 2
Figure 1. SD303/SD307 Evaluation Board SD303/SD307 EVK User Guide Rev 1.2 2 of 27 © 2010, National Semiconductor Corp.
PAGE 3
SDI Input and SDO Output The SDI input connectors (J1 and J2) are 50Ω SMA connectors. The SD303/SD307 is initially configured for 100Ω differential input. To configure the SD303/SD307 for 50Ω single-ended input, remove R28 and place 49.9Ω 0402 resistors in R9 and R10. When using only one input, the other input should be terminated with a 50Ω SMA termination. The SDO output connectors (J3 and J4 for the SD303; and J3, J4, J5, and J6 for the dual output SD307) are 75Ω BNC connectors.
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¯¯¯¯ RSTI ¯¯¯¯ push button switch controls RSTI ¯¯¯¯ , and the RSTI ¯¯¯¯ LED shows its state. RSTI ¯¯¯¯ is used to reset the cable The RSTI ¯¯¯¯ LED is Green during normal operation (RSTI ¯¯¯¯ = 1), and Red when driver to its default register settings. The RSTI ¯¯¯¯ = 0).
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Table 2. SD303/SD307 LED Indicators LED Reference Default after Reset * D1 POWER Green POWER=1, board powered D2 ENABLE Green ENABLE=1, device enabled D3 D4 D5 D6 SD/HD MODE RSTO ¯¯¯¯¯ RSTI ¯¯¯¯ Green Off Red Green SD/HD=0, HD/3G mode N/A RSTO ¯¯¯¯¯ =1 RSTI ¯¯¯¯ =1, normal operation When flashing Red, indicates the 3.
PAGE 6
Software Setup System Requirements Operating System: USB: Windows XP or Vista 2.0 Installation Download the latest software from http://www.national.com/analog/interface/sd303_307evk. Extract the ALPF_monthdayyear_major version_minor version.exe” (ex. ALPF_07312008_125_0016.exe) file to a temporary location that can be deleted later. Make sure the evaluation board is not connected to the PC. The following installation instructions are for the Windows XP Operating System.
PAGE 7
Software Description Startup Make sure all the software has been installed and the hardware is powered on and connected to the PC. Execute “Analog LaunchPAD” from the start menu. The default start menu location is “Programs\National Semiconductor Corp\Analog LaunchPAD vx.x.x\Analog LaunchPAD”. The application should come up in the state shown below (for the LMH0307). If it does not, see “Trouble Shooting” at the end of this document. Figure 2.
PAGE 8
Figure 3. LMH0307 Information Tab LMH0303 and 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 Rev 1.2 8 of 27 © 2010, National Semiconductor Corp.
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Figure 4. LMH0307 Main Tab Figure 5. LMH0303 Main Tab SD303/SD307 EVK User Guide Rev 1.2 9 of 27 © 2010, National Semiconductor Corp.
PAGE 10
Firmware Version – FW Ver FW Ver shows the version of the firmware installed on the evaluation board. Termination Fault These controls show the default configuration of the HD and SD Termination Fault Threshold registers and also provide the ability to change the thresholds. The LMH0307 has two pairs of Termination Fault Threshold registers – one HD/SD pair for each of its two output channels – as shown in Figure 4.
PAGE 11
SD/HD The SD/HD checkbox controls the state of the SD/HD pin. This checkbox is un-checked by default to enable HD/3G mode. Enabling this checkbox sets the cable driver edge rates to SD mode. SDO Amp The SDO Amp controls set the amplitude of the output driver(s). The LMH0307 has two independently configurable outputs (SDO0 and SD01) and the LMH0303 has a single configurable output (SDO).
PAGE 12
Figure 6. LMH0307 Registers Tab Each register can be examined in detail by either double clicking on the desired registers fold bar (with the address and the register name, e.g. 0x00 – ID) or by single clicking the icon at the right of the fold bar (two inverted carats). The Refresh button will re-read the currently selected register and the Refresh All will read all registers in the device.
PAGE 13
Figure 7. LMH0307 Registers Tab with Verbose Descriptions Figure 8. LMH0307 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 Rev 1.2 13 of 27 © 2010, National Semiconductor Corp.
PAGE 14
Figure 9. LMH0307 Register Display The Load and Save buttons provide a handy mechanism for restoring or saving the register set external to the evaluation board. Cable Driver Output Waveform Test Conditions The SDO0 output of the LMH0307 on the SD307 is observed in the following example. The input signal is a 2.97 Gbps PRBS10 from 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.
PAGE 15
Figure 10. LMH0307 SDO0 Output Waveform at 2.97 Gbps SD303/SD307 EVK User Guide Rev 1.2 15 of 27 © 2010, National Semiconductor Corp.
PAGE 16
Trouble Shooting If the following window (Figure 11) opens after starting the ALP software, double check the hardware setup. Figure 11. Analog LaunchPAD 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 Rev 1.2 16 of 27 © 2010, National Semiconductor Corp.
PAGE 17
The software should start with only “LMH0303” or “LMH0307” in the “Devices” pull down menu. If there are more devices then the software is most likely in demo mode. When the ALP is operating in demo mode there is a “(Demo Mode)” indication in the lower left of the application 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.
PAGE 18
Figure 15. Analog LaunchPAD Screen with Demo Mode Off SD303/SD307 EVK User Guide Rev 1.2 18 of 27 © 2010, National Semiconductor Corp.
PAGE 19
Bill of Materials Reference Designator Qty C1, C2 C3, C4, C5, C6, C10, C11, C14, C24, C26, C28 Description Manufacturer Manufacturer Part No. 2 1uF Capacitor Ceramic 10V, 20%, X5R, 0402 Panasonic ECJ-0EB1A105M 10 4.7uF Capacitor Ceramic 6.3V, 20%, X5R, 0603 Panasonic ECJ-1VB0J475M C7, C25, C27, C29 4 100pF Capacitor Ceramic 50V, 5%, C0G, 0603 Panasonic ECJ-1VC1H101J C8, C30, C31 3 0.
PAGE 20
Appendix Additional typical performance plots measured with the SD303EVK and SD307EVK are provided as reference. ORL (Output Return Loss) plots are shown for each output. Eye patterns showing transition times and jitter are shown for 2.97 Gbps. Amplitude measurements are shown for the outputs at 270 Mbps.
PAGE 21
ORL Plot - Channel 0 – Positive ORL Plot - Channel 1 – Positive SD303/SD307 EVK User Guide Rev 1.2 21 of 27 © 2010, National Semiconductor Corp.
PAGE 22
ORL Plot - Channel 1 – Negative Smith Chart – Channel 0 – Positive SD303/SD307 EVK User Guide Rev 1.2 22 of 27 © 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 Rev 1.2 23 of 27 © 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 Rev 1.2 24 of 27 © 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 Rev 1.2 25 of 27 © 2010, National Semiconductor Corp.
PAGE 26
A B C D 1 1 1 J2 VCC J8 BANANA JACK (Red) 1 J1 GND J9 BANANA JACK (Black) VCC GND C9 10uF 2 2 GND R9 OPEN SDI SDIbar GK RK R10 OPEN GND D11 GND GND 1 2 GA RA VCC GND C7 100pF BiColored LED C8 0.1uF DVCC VCC GND C1 1uF C2 1uF 3 4 R22 300 C31 0.1uF 3 J6 L4 6.8nH 75 GND R7 75 C6 4.7uF SDI SDIbar VEE RREF VCC VCC J5 C5 4.
PAGE 27
J7 FD0 GND VBUS Dm Dp ID GND SHLD 1 2 3 4 5 6 1 2 3 FD1 GND 1 VCC DVCC K1 A4 A3 FD2 16.5K 1% 1 2 3 22 22 R26 R30 36.5K 1% D13 A D GNDGND B C 6 5 4 R27 GND GND Q1 C13 GND C29 100pF JP2 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DVCC GND C12 0.033uF GND GND R52 100K 5% R51 2.74K 1% R50 52.3K 1% HEADER 7X2 GND 1uF U2 8 7 6 5 IRLML6401PbF C28 4.7uF DVCC LP3981 Vout NC2 Vin Ven NC1 Bypass Sense GND GND C27 100pF DVCC 1 2 3 4 CEBS0624V-G C11 DVCC C10 4.
PAGE 28
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