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AC701 Si570 Programming Overview 

Description 

– The AC701 board has a Silicon Labs Si570 Programmable Oscillator that 

defaults to 156.25 MHz. Via the IIC bus, the frequency of this device can be 

changed. This tutorial shows how to change the output frequency of this 

device. 

Note:

 Presentation applies to the AC701 

Summary of Contents for AC701 Si570

Page 1: ...April 2015 AC701 Si570 Programming XTP230...

Page 2: ...orrect any errors contained in the Information or to advise you of any corrections or updates Xilinx expressly disclaims any liability in connection with technical support or assistance that may be pr...

Page 3: ...ing Overview Xilinx AC701 Board Software Requirements Setup for the AC701 Si570 Programming Programming the Si570 Correcting the Frequency Programming the FMC Si570 References Note This presentation a...

Page 4: ...1 board has a Silicon Labs Si570 Programmable Oscillator that defaults to 156 25 MHz Via the IIC bus the frequency of this device can be changed This tutorial shows how to change the output frequency...

Page 5: ...Xilinx AC701 Board...

Page 6: ...Vivado Software Requirements Xilinx Vivado Design Suite 2015 1 Design Edition SDK Combined installer Note Presentation applies to the AC701...

Page 7: ...AC701 Setup Connect a USB Type A to Micro B cable to the USB JTAG Digilent connector on the AC701 board Connect this cable to your PC...

Page 8: ...AC701 Setup Connect a USB Type A to Mini B cable to the USB UART connector on the AC701 board Connect this cable to your PC Power on the AC701 board for UART Drivers Installation...

Page 9: ...AC701 Setup Install USB UART Drivers Refer to UG1033 for Installation details Note Presentation applies to the AC701...

Page 10: ...AC701 Setup Reboot your PC if necessary Right click on My Computer and select Properties Select the Hardware tab Click on Device Manager Note Presentation applies to the AC701...

Page 11: ...AC701 Setup Expand the Ports Hardware Right click on Silicon Labs CP210x USB to UART Bridge and select Properties Note Presentation applies to the AC701...

Page 12: ...AC701 Setup Under Port Settings tab Click Advanced Set the COM Port to an open Com Port setting from COM1 to COM4 Note Presentation applies to the AC701...

Page 13: ...tup Refer to UG1036 for Tera Term installation Board Power must be on before starting Tera Term Start the Terminal Program Select your USB Com Port Set the baud to 9600 Note Presentation applies to th...

Page 14: ...Si Labs Programmable Oscillator Calculator Download ProgOscillatorSwInstall zip Note Presentation applies to the AC701...

Page 15: ...Setup for AC701 Si570 Programming Unzip the AC701 Si570 Programming Design Files 2015 1 C ZIP file to your C drive Available through http www xilinx com ac701 Note Presentation applies to the AC701...

Page 16: ...AC701 Si570 Programming Open a Vivado Tcl Shell Start All Programs Xilinx Design Tools Vivado 2015 1 Vivado 2015 1 Tcl Shell Note Presentation applies to the AC701...

Page 17: ...i570 Programming Download the Frequency Adjust bitstream with Vivado In the Vivado Tcl Shell type cd C ac701_si570_programming ready_for_download source freq_adjust tcl Note Presentation applies to th...

Page 18: ...AC701 Si570 Programming Open the Debug Probes Note Presentation applies to the AC701...

Page 19: ...AC701 Si570 Programming View the Debug Probes tab Select the probes and drag to the hw_vios tab Note Presentation applies to the AC701...

Page 20: ...VIO Cores under the Debug Probes tab The VIO Probes show 200 MHz for the System Clock and 156 25 MHz for the Si570 User Clock Unsigned decimal values correspond to the frequency of each input Note Pr...

Page 21: ...ator Calculator To use the SiLabs calculator the correct fXTAL value for each Si570 must be determined using this equation For this equation Fout 156 25 the preprogrammed frequency of the Si570s on th...

Page 22: ...The terminal window shows the current register settings for the Si570 The power on values will appear in the terminal window Note the value of 0x01C2BBFE487F Note The values reported by your Si570 may...

Page 23: ...AC701 Si570 Programming The value 0x01C2BBFE487F corresponds to the contents of the Si570 s registers 7 to 12 Note Presentation applies to the AC701...

Page 24: ...AC701 Si570 Programming Extract the HS_DIV and N1 values from 0x01C2BBFE487F HS_DIV 0b000 which corresponds to 4 N1 0b0000111 which corresponds to 8...

Page 25: ...AC701 Si570 Programming Extract the RFREQ value from 0x01C2BBFE487F 02BBFE487F Note Presentation applies to the AC701...

Page 26: ...AC701 Si570 Programming Open the Window Calculator Set to Scientific and Hex mode Note Presentation applies to the AC701...

Page 27: ...AC701 Si570 Programming Enter or paste the RFREQ value 02BBFE487F Convert it to Decimal Note Presentation applies to the AC701...

Page 28: ...AC701 Si570 Programming Divide by 2 28 This is the value for RFREQ Note Presentation applies to the AC701...

Page 29: ...AC701 Si570 Programming For this equation Fout 156 25 RFREQ 43 7495808564126491546630859375 HSDIV 4 N1 8 Fout x HSDIV x N1 5000 fXTAL 5000 RFREQ Note Presentation applies to the AC701...

Page 30: ...i570 Programming For this equation Divide 43 7495808564126491546630859375 by 5000 Take the reciprocal fXTAL 114 28680920190161752332043659281 Ctrl C to copy this value Note Presentation applies to the...

Page 31: ...AC701 Si570 Programming Open the SiLabs Programmable Oscillator Calculator Select the Si570 and click OK Note Presentation applies to the AC701...

Page 32: ...AC701 Si570 Programming Select Options Advanced...

Page 33: ...AC701 Si570 Programming Paste in the value of fXTAL The calculator will round the number appropriately Click OK Note Presentation applies to the AC701...

Page 34: ...AC701 Si570 Programming Enter 156 25 and click the Apply Definition button...

Page 35: ...AC701 Si570 Programming Set the new frequency to 200 MHz and click the Create Example button...

Page 36: ...rogramming Under the summary tab the new register configurations are shown The startup register configurations will vary slightly from the actual device power on programming Note Presentation applies...

Page 37: ...AC701 Si570 Programming Press a key to begin entering the newly calculated values When done press w Note Presentation applies to the AC701...

Page 38: ...AC701 Si570 Programming Si570 has been successfully updated Note Presentation applies to the AC701...

Page 39: ...AC701 Si570 Programming The Si570 User Clock now shows 200 00 MHz Note Presentation applies to the AC701...

Page 40: ...AC701 Si570 Programming If needed press SW8 to reset the MicroBlaze process Instead of reloading the bitstream also acts as a CPU Reset...

Page 41: ...Programming the FMC Si570...

Page 42: ...101 XM104 and XM105 have a Silicon Labs Si570 Programmable Oscillator that defaults to 156 25 MHz Via the IIC bus the frequency of this device can be changed This tutorial shows how to change the outp...

Page 43: ...Xilinx XM101 FMC Module The XM101 board uses an on board IIC switch...

Page 44: ...Xilinx XM104 FMC Module The XM104 board has an on board IIC switch...

Page 45: ...Xilinx XM105 FMC Module The XM105 board has a direct connection to the Si570 IIC Note FMC_TDI and FMC_TDO J5 6 7 must be connected during configuration...

Page 46: ...AC701 FMC Si570 Programming Attach your FMC board XM101 XM104 or XM105 to the FMC HPC expansion port on the AC701 Turn AC701 power off while installing the FMC boards...

Page 47: ...ming For this example an XM105 board has been connected to the FMC HPC port In a Vivado Tcl Shell type cd C ac701_si570_programming ready_for_download source frequency_fmc_monitor tcl Note Presentatio...

Page 48: ...AC701 FMC Si570 Programming Open the Debug Probes Note Presentation applies to the AC701...

Page 49: ...AC701 FMC Si570 Programming View the Debug Probes Select the probes and drag to the hw_vios tab Note Presentation applies to the AC701...

Page 50: ...AC701 FMC Si570 Programming An XM105 board on the FMC HPC port shows 156 25 MHz on FMC_HPC_CLK0 Note Presentation applies to the AC701...

Page 51: ...AC701 FMC Si570 Programming Under Hardware right click on the xc7a200t_0 and select Program Device Note Presentation applies to the AC701...

Page 52: ...70 Programming Select a bitstream that matches your FMC Board FMC port configuration e g xm101_hpc bit xm104_lpc bit etc Also select the Debug Probes file debug_nets_fmc ltx Note Presentation applies...

Page 53: ...g The terminal window shows the current register settings for the Si570 The power on values will appear in the terminal window Note the value of 0x01C2BC1573BB Note The values reported by your Si570 m...

Page 54: ...amming Use the Si570 Calibration procedure noted earlier in this document to determine the values to enter Press a key to begin entering the newly calculated values When done press w Note Presentation...

Page 55: ...AC701 FMC Si570 Programming Si570 has been successfully updated Note Presentation applies to the AC701...

Page 56: ...AC701 FMC Si570 Programming The XM105 board on FMC HPC now shows 200 MHz Note Presentation applies to the AC701...

Page 57: ...AC701 with FMC XM Boards...

Page 58: ...AC701 with FMC XM Boards AC701 with XM101 on the FMC HPC port Note Presentation applies to the AC701...

Page 59: ...AC701 with FMC XM Boards AC701 with XM104 on the FMC HPC port Note Presentation applies to the AC701...

Page 60: ...AC701 with FMC XM Boards AC701 with XM105 on the FMC HPC port Note Presentation applies to the AC701...

Page 61: ...References...

Page 62: ...pdf FMC XM104 Documentation FMC XM104 Connectivity Card http www xilinx com products boards and kits hw fmc xm104 g html FMC XM104 Connectivity Card User Guide UG536 http www xilinx com support docume...

Page 63: ...abs com Support 20Documents TechnicalDocs si570 pdf Vivado Programming and Debugging Vivado Design Suite Programming and Debugging User Guide UG908 http www xilinx com support documentation sw_manuals...

Page 64: ...Documentation...

Page 65: ...nswers 51456 htm AC701 Documentation Artix 7 FPGA AC701 Evaluation Kit http www xilinx com products boards and kits ek a7 ac701 g html AC701 Getting Started Guide UG967 http www xilinx com support doc...

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