UG335: Si5395 Evaluation Board User's Guide The Si5395 EVB is used for evaluating the Si5395 Any-Frequency, Any-Output, JitterAttenuating Clock Multiplier. There are two different EVBs for the Si5395. There is a Grade A and a Grade P board. This user guide is intended for both versions of the Si5395 EVBS. The device grade and revision is distinguished by a white 1 inch x 0.187 inch label installed in the lower left hand corner of the board. In the example below, the label "SI5395A-A-EB" indicates the evaluation board has been assembled with an Si5395 device, Grade A, Revision A, installed. (For ordering purposes only, the terms "EB" and "EVB" refer to the board and the kit, respectively. For the purpose of this document, the terms are synonymous in context.) KEY FEATURES * Powered from USB port or external power supply * Onboard 48 MHz XTAL or Reference SMA Inputs allow holdover mode of operation on the Si5395 * ClockBuilder Pro(R) (CBPro) GUI programmable VDD supply allows device to operate from 3.3, 2.5, or 1.8 V * CBPro GUI programmable VDDO supplies allow each of the 10 outputs to have its own power supply voltage selectable from 3.3, 2.5, or 1.8 V * CBPro GUI-controlled voltage, current, and power measurements of VDD and all VDDO supplies * Status LEDs for power supplies and control/status signals of Si5395 * SMA connectors for input clocks, output clocks, and optional external timing reference clock silabs.com | Building a more connected world. Rev. 1.0 UG335: Si5395 Evaluation Board User's Guide Functional Block Diagram 1. Functional Block Diagram Below is a functional block diagram of the Si5395 EVB. This evaluation board can be connected to a PC via the main USB connector for programming, control, and monitoring. See 3. Quick Start or 10.3 Overview of ClockBuilder Pro Applications for more information. I2C/SPI Bus C8051F380 MCU + Peripherals Control/ Status INTR Alarm_Status 48 MHz XTAL Input Clock 0 Input Clock 1 Input Clock 2 Input Clock 3 { { { { XA XB Input Termination CLKIN_0 Input Termination CLKIN_1 Input Termination CLKIN_2 Input Termination CLKIN_3/FB_IN CLKIN_0B CLKIN_1B CLKIN_2B CLKIN_3/FB_INB Si5395 VDDO_9A VDDMCU I2C/SPI Bus Power Supply VDDO_0A VDDO_0 VDDO_1 VDDO_2 VDDO_3 VDDO_4 VDDO_5 VDDO_6 VDDO_7 VDDO_8 VDDO_9 VDDO_9A +5V_Ext VDD_3.3 Ext +5V Connector +5V_Aux VDDO_0A VDDO_0 VDDO_1 VDDO_2 VDDO_3 VDDO_4 VDDO_5 VDDO_6 VDDO_7 VDDO_8 VDDO_9 Power only VDD_Core Aux USB Connector +5V_USB VDD_3.3 Power only VDD_Core Main USB Connector CLKOUT_0A CLKOUT_0AB Output Termination CLKOUT_0 CLKOUT_0B Output Termination CLKOUT_1 CLKOUT_1B Output Termination CLKOUT_2 CLKOUT_2B Output Termination CLKOUT_3 CLKOUT_3B Output Termination CLKOUT_4 CLKOUT_4B Output Termination CLKOUT_5 CLKOUT_5B Output Termination CLKOUT_6 CLKOUT_6B Output Termination CLKOUT_7 CLKOUT_7B Output Termination CLKOUT_8 CLKOUT_8B Output Termination CLKOUT_9 CLKOUT_9B Output Termination CLKOUT_9A CLKOUT_9AB Output Termination } } } } } } } } } } } } Output Clock 0A Output Clock 0 Output Clock 1 Output Clock 2 Output Clock 3 Output Clock 4 Output Clock 5 Output Clock 6 Output Clock 7 Output Clock 8 Output Clock 9 Output Clock 9A Figure 1.1. Si5395 EB Functional Block Diagram silabs.com | Building a more connected world. Rev. 1.0 | 2 UG335: Si5395 Evaluation Board User's Guide Si5395 EVB Support Documentation and ClockBuilderPro Software 2. Si5395 EVB Support Documentation and ClockBuilderPro Software All Si5395 EVB schematics, BOMs, User's Guides, and software can be found online at: http://www.silabs.com/products/clocksoscillators/pages/si539x-evb.aspx. silabs.com | Building a more connected world. Rev. 1.0 | 3 UG335: Si5395 Evaluation Board User's Guide Quick Start 3. Quick Start 1. Install the ClockBuilder Pro desktop software from http://www.silabs.com/CBPro. 2. Connect a USB cable from Si5395 EVB to the PC where the software was installed. 3. Confirm jumpers are installed as shown in Table 4.1 Si5395 EVB Jumper Defaults1 on page 5. 4. Launch the ClockBuilder Pro Software. 5. You can use ClockBuilder Pro to create, download, and run a frequency plan on the Si5395 EVB. 6. For the Si5395 data sheet, go to http://www.silabs.com/timing. silabs.com | Building a more connected world. Rev. 1.0 | 4 UG335: Si5395 Evaluation Board User's Guide Jumper Defaults 4. Jumper Defaults Table 4.1. Si5395 EVB Jumper Defaults1 Location Type I= Installed 0 = Open Location Type I = Installed 0 = Open JP1 2-pin O JP23 2-pin O JP2 2-pin I JP24 2-pin O JP3 2-pin O JP25 2-pin O JP4 2-pin I JP26 2-pin O JP5 2-pin I JP27 2-pin O JP6 2-pin I JP28 2-pin O JP7 2-pin I JP29 2-pin O JP8 2-pin O JP30 2-pin O JP9 2-pin O JP31 2-pin O JP10 2-pin I JP32 2-pin O JP13 2-pin O JP33 2-pin O JP14 2-pin I JP34 2-pin O JP15 3-pin 1 to 2 JP35 2-pin O JP16 3-pin 1 to 2 JP36 2-pin O JP17 2-pin O JP38 3-pin All Open JP18 2-pin O JP39 2-pin O JP19 2-pin O JP40 2-pin O JP20 2-pin O JP41 2-pin O JP21 2-pin O J36 5 x 2 Hdr All 5 installed JP22 2-pin O Note: 1. Refer to the Si5395 EVB schematics for the functionality associated with each jumper. silabs.com | Building a more connected world. Rev. 1.0 | 5 UG335: Si5395 Evaluation Board User's Guide Status LEDs 5. Status LEDs Location Silkscreen Color Status Function Indication D27 5VUSBMAIN Blue Main USB +5 V present D22 3P3V Blue DUT +3.3 V is present D26 VDD DUT Blue DUT VDD voltage present D25 INTR Red MCU INTR (Interrupt) active D21 READY Green MCU Ready D24 BUSY Green MCU Busy D27, D22, and D26 are illuminated when USB +5 V, Si5395 +3.3 V, and Si5395 VDD supply voltages, respectively, are present. D25, D21, and D24 are status LEDs showing on-board MCU activity. Figure 5.1. Status LEDs silabs.com | Building a more connected world. Rev. 1.0 | 6 UG335: Si5395 Evaluation Board User's Guide External Reference Input (XA/XB) 6. External Reference Input (XA/XB) An external reference (XTAL) is used in combination with the internal oscillator to produce an ultra-low-jitter reference clock for the DSPLL and to provide a stable reference for the free-run and holdover modes. The Si5395 EVB can also accommodate an external reference clock instead of a crystal. To evaluate the device with a REFCLK, C111 and C113 must be populated and the XTAL removed (see the figure below). Also, R197 and R202 must be populated. The REFCLK can then be supplied to J39 and J40. In the case of the Si5395J-A, which is the grade with the xtal internal to the device, there will be no external xtal supplied on the board and no input from Ref_XA and Ref_XB. In this case, it is advised to remove R197 and R202. Figure 6.1. External Reference Input Circuit silabs.com | Building a more connected world. Rev. 1.0 | 7 UG335: Si5395 Evaluation Board User's Guide Clock Input Circuits (INx/INxB) 7. Clock Input Circuits (INx/INxB) The Si5395 EVB has eight SMA connectors (IN0, IN0B - IN3, IN3B) for receiving external clock signals. All input clocks are terminated as shown below. Note that input clocks are ac-coupled and 50 terminated. This represents four differential input clock pairs. Singleended clocks can be used by appropriately driving one side of the differential pair with a single-ended clock. For details on how to configure inputs as single-ended, refer to the Si5395 data sheet. Figure 7.1. Input Clock Termination Circuit silabs.com | Building a more connected world. Rev. 1.0 | 8 UG335: Si5395 Evaluation Board User's Guide Clock Output Circuits (OUTx/OUTxB) 8. Clock Output Circuits (OUTx/OUTxB) Each of the twenty-four output drivers (12 differential pairs) is ac-coupled to its respective SMA connector. The output clock termination circuit is shown below. The output signal will have no dc bias. If dc coupling is required, the ac coupling capacitors can be replaced with a resistor of appropriate value. The Si5395 EVB provides pads for optional output termination resistors and/or low-frequency capacitors. Note that components with the schematic "NI" designation are not normally populated on the Si5395 EVB and provide locations on the PCB for optional dc/ac terminations by the end user. Figure 8.1. Output Clock Termination Circuit silabs.com | Building a more connected world. Rev. 1.0 | 9 UG335: Si5395 Evaluation Board User's Guide Installing ClockBuilderPro Desktop Software 9. Installing ClockBuilderPro Desktop Software To install the CBOPro software on any Windows 7 (or above) PC, go to http://www.silabs.com/CBPro and download the ClockBuilder Pro software. Installation instructions and User's Guide for ClockBuilder Pro can be found at the download link shown above. silabs.com | Building a more connected world. Rev. 1.0 | 10 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10. Using the Si5395 EVB 10.1 Connecting the EVB to Your Host PC Once ClockBuilder Pro software is installed, connect to the EVB with a USB cable as shown in the figure below: Figure 10.1. EVB Connection Diagram silabs.com | Building a more connected world. Rev. 1.0 | 11 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.2 Additional Power Supplies Although additional power (besides the power supplied by the host PC's USB port) is not needed for most configurations, two additional +5 VDC power supplies (MAIN and AUX) can be connected to J33 and J34 (located on the bottom of the board, near the USB connector). Refer to the Si5395 EVB schematic for details. The Si5395 EVB comes preconfigured with jumpers installed at JP15 and JP16 (pins 1-2 in both cases) in order to select "USB". These jumpers, together with the components installed, configure the evaluation board to obtain all +5 V power solely through the main USB connector at J37. This setup is the default configuration and should normally be sufficient. The following figure shows the correct installation of the jumper shunts at JP15 and JP16 for default or standard operation. Figure 10.2. JP15-JP16 Standard Jumper Shunt Installation Note: Some early versions of the 64-pin Si534x-EVBs may have the silkscreen text at JP15-JP16 reversed regarding EXT and USB, i.e., USB EXT instead of EXT USB. Regardless, the correct installation of the jumper shunts for default or standard operation is on the right hand side as read and viewed in the figure above. The general guidelines for single USB power supply operation are as follows: * Use either a USB 3.0 or USB 2.0 port. These ports are specified to supply 900 mA and 500 mA, respectively, at +5 V. * If you are working with a USB 2.0 port and you are current limited, turn off enough DUT output voltage regulators to drop the total DUT current 470 mA. (Note: USB 2.0 ports may supply > 500 mA. Provided the nominal +5 V drops gracefully by less than 10%, the EVB will still work.) * If you are working with a USB 2.0 and you are current-limited and need all output clock drivers enabled, reconfigure the EVB to drive the DUT output voltage regulators from an external +5 V power supply as follows: * Connect an external +5 V power supply to terminal block J33 on the back side of the PCB. * Move the jumper at JP15 from pins 1-2 USB to pins 2-3 EXT. 10.3 Overview of ClockBuilder Pro Applications Note: The following instructions and screen captures may vary slightly depending on the grade of your device and your version of ClockBuilder Pro. (The screen captures below were taken for a board labeled "SI5395A-A-EB".) The ClockBuilder Pro installer will install two main applications: silabs.com | Building a more connected world. Rev. 1.0 | 12 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Figure 10.3. Application #1: ClockBuilder Pro Wizard Use the CBPro wizard to: * Create a new design * Review or edit an existing design * Export: create in-system programming Figure 10.4. Application #2: EVBGUI Use the EVB GUI to: * Download configuration to EVB's DUT (Si5395) * Control the EVB's regulators * Monitor voltage, current, and power on the EVB silabs.com | Building a more connected world. Rev. 1.0 | 13 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.4 Common ClockBuilder Pro Workflow Scenarios There are three common workflow scenarios when using CBPro and the Si5395 EVB. These workflow scenarios are: * Workflow Scenario 1: Testing a Silicon Labs-Created Default Configuration * Workflow Scenario 2: Modifying the Default Silicon Labs-Created Device Configuration * Workflow Scenario 3: Testing a User-Created Device Configuration Each workflow scenario is described in more detail in the following sections. 10.5 Workflow Scenario 1: Testing a Silicon Labs Default Configuration The flow for using the EVB GUI to initialize and control a device on the EVB is as follows: Once the PC and EVB are connected, launch ClockBuilder Pro by clicking this icon on your PC's desktop: Figure 10.5. ClockBuilder Pro Desktop Icon If an EVB is detected, click on the "Open Default Plan" button on the Wizard's main menu. CBPro automatically detects the EVB and device type. Figure 10.6. Open Default Plan silabs.com | Building a more connected world. Rev. 1.0 | 14 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Once you open the default plan (based on your EVB model number), a popup will appear: Figure 10.7. Write Design to EVB Dialog Select "Yes" to write the default plan to the Si5395 device mounted on your EVB. This ensures the device is completely reconfigured per the Silicon Labs default plan for the DUT type mounted on the EVB. Figure 10.8. Writing Design Status After CBPro writes the default plan to the EVB, click on "Open EVB GUI" as shown below: Figure 10.9. Open EVB GUI The EVB GUI will appear. Note that all power supplies will be set to the values defined in the device's default CBPro project file created by Silicon Labs, as shown in the following figure: silabs.com | Building a more connected world. Rev. 1.0 | 15 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Figure 10.10. EVB GUI Window silabs.com | Building a more connected world. Rev. 1.0 | 16 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.5.1 Verify Free-Run Mode Operation Assuming no external clocks have been connected to the INPUT CLOCK differential SMA connectors (labeled "INx/INxB") located around the perimeter of the EVB, the DUT should now be operating in free-run mode, as the DUT will be locked to the crystal in this case. You can run a quick check to determine if the device is powered up and generating output clocks (and consuming power) by clicking on the highlighted "Read All" button and then reviewing the voltage, current, and power readings for each VDDx supply. Note: Switching the VDD and VDDA supplies "Off" and then "On" will power-down and reset the DUT. Each time this is done, you must go back to the Wizard's main menu and select "Write Design to EVB" to reload the Silicon Labs default plan into the DUT's register space, as shown below. Figure 10.11. Write Design to EVB Failure to perform this step will cause the device to read in a preprogrammed plan from its non-volatile memory (NVM). However, the plan loaded from the NVM may not be the latest plan recommended by Silicon Labs for evaluation. At this point, you should verify the presence and frequencies of the output clocks (running to free-run mode from the crystal) using appropriate external instrumentation connected to the output clock SMA connectors. To verify that the output clocks are toggling at the correct frequency and signal format, click on View Design Report as highlighted below. silabs.com | Building a more connected world. Rev. 1.0 | 17 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Figure 10.12. View Design Report Your configuration's design report will appear in a new window, as shown below. Compare the observed output clocks to the frequencies and formats noted in your default project's Design Report. silabs.com | Building a more connected world. Rev. 1.0 | 18 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Figure 10.13. Design Report Window 10.5.2 Verify Locked Mode Operation Assuming you connect the correct input clocks to the EVB (as noted in the Design Report shown above), the DUT on your EVB will run in "locked" mode. silabs.com | Building a more connected world. Rev. 1.0 | 19 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.6 Workflow Scenario 2: Modifying the Default Silicon Labs-Created Device Configuration To modify the "default" configuration using the CBPro Wizard, click on the links below under "Edit Configuration with Wizard". Figure 10.14. Edit Configuration with Wizard You will now be taken to the Wizard's step-by-step menus to allow you to change any of the default plan's operating configurations. silabs.com | Building a more connected world. Rev. 1.0 | 20 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Figure 10.15. Design Wizard Note that you can click on the icon in the lower left hand corner of the menu to confirm that your frequency plan is valid. After making your desired changes, click on Write to EVB to update the DUT and reconfigure your device real-time. The Design Write status window will appear each time you make a change. Figure 10.16. Writing Design Status silabs.com | Building a more connected world. Rev. 1.0 | 21 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.7 Workflow Scenario 3: Testing a User-Created Device Configuration To test a previously created user configuration, open the CBPro Wizard by clicking the icon on your desktop and selecting Open Design Project File. Figure 10.17. Open Design Project File Locate your CBPro design file (*.slabtimeproj or *.sitproj file) in the Windows file browser. Figure 10.18. Browse to Project File silabs.com | Building a more connected world. Rev. 1.0 | 22 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB Select "Yes" when the WRITE DESIGN to EVB popup appears: Figure 10.19. Write Design to EVB Dialog The progress bar will be launched. Once the new design project file has been written to the device, verify the presence and frequencies of your output clocks and other operating configurations using external instrumentation. silabs.com | Building a more connected world. Rev. 1.0 | 23 UG335: Si5395 Evaluation Board User's Guide Using the Si5395 EVB 10.8 Exporting the Register Map File for Device Programming by a Host Processor You can also export your configuration to a file format suitable for in-system programming by selecting Export as shown below: Figure 10.20. Export Register Map File You can now write your device's complete configuration to file formats suitable for in-system programming: Figure 10.21. Export Settings silabs.com | Building a more connected world. Rev. 1.0 | 24 UG335: Si5395 Evaluation Board User's Guide Writing a New Frequency Plan or Device Configuration to Non-Volatile Memory (OTP) 11. Writing a New Frequency Plan or Device Configuration to Non-Volatile Memory (OTP) Note: Writing to the device non-volatile memory (OTP) is NOT the same as writing a configuration into the Si5395 using ClockBuilder Pro on the Si5395 EVB. Writing a configuration into the EVB from ClockBuilderPro is done using Si5395 RAM space and can be done a virtually unlimited numbers of times. Writing to OTP is limited as described below. Refer to the Si5395 Family Reference Manual and device data sheets for information on how to write a configuration to the EVB DUT's non-volatile memory (OTP). The OTP can be programmed a maximum of two times only. Care must be taken to ensure the desired configuration is valid when choosing to write to OTP. silabs.com | Building a more connected world. Rev. 1.0 | 25 UG335: Si5395 Evaluation Board User's Guide Serial Device Communications 12. Serial Device Communications 12.1 Onboard SPI Support The MCU onboard the Si5395 EVB communicates with the Si5395 device through a 4-wire SPI (Serial Peripheral Interface) link. The MCU is the SPI master and the Si5395 device is the SPI slave. The Si5395 device can also support a 2-wire I2C serial interface, although the Si5395 EVB does NOT support the I2C mode of operation. SPI mode was chosen for the EVB because of the relatively higher speed transfers supported by SPI vs. I2C. silabs.com | Building a more connected world. Rev. 1.0 | 26 UG335: Si5395 Evaluation Board User's Guide Si5395 EVB Schematic, Layout, and Bill of Materials (BOM) 13. Si5395 EVB Schematic, Layout, and Bill of Materials (BOM) The Si5395 EVB Schematic, Layout, and Bill of Materials (BOM) can be found online at: http://www.silabs.com/products/clocksoscillators/pages/si539x-evb.aspx. Note: Please be aware that the Si5395 EVB schematic is in OrCad Capture hierarchical format and not in a typical "flat" schematic format. This document supports the evaluation board silkscreened Si5395 EVB for the following configurations as described in the table below. The data sheet documents the different Si5395 grades. Table 13.1. Evaluation Board Configurations1 Config # Eval Board Label Si5395 Notes Grade Revision 1 Si5395A-A-EB A A Crystal and related components installed. 2 Si5395P-A-EB P A Crystal and related components installed. Only the DUT and label differ versus Si5395A-A-EB. Note: 1. Note that it is not possible to load an Si5395A project onto an Si5395P-A-EB or an Si5395P project onto an Si5395A-A-EB. Use Si5395A/B/C/D plans for Si5395A-A-EB and Si5395P plans for Si5395P-A-EB. silabs.com | Building a more connected world. Rev. 1.0 | 27 ClockBuilder Pro One-click access to Timing tools, documentation, software, source code libraries & more. Available for Windows and iOS (CBGo only). www.silabs.com/CBPro Timing Portfolio www.silabs.com/timing SW/HW www.silabs.com/CBPro Quality www.silabs.com/quality Support and Community community.silabs.com Disclaimer Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Labs shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Labs. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Labs products are not designed or authorized for military applications. Silicon Labs products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons. 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