Xilinx VC709 User manual

April 2014
VC709 Si570 Fixed
Frequencies
XTP239

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Revision History
Date Version Description
04/16/14 5.0 Recompiled for 2014.1.
12/18/13 4.0 Recompiled for 2013.4.
10/23/13 3.0 Recompiled for 2013.3.
06/19/13 2.0 Recompiled for 2013.2
04/03/13 1.0 Initial version.

VC709 Si570 Fixed Frequency Overview
Xilinx VC709 Board
Software Requirements
Setup for the VC709 Si570 Fixed Frequency
VC709 Si570 Fixed Frequency
Changing an Si570 from 156.25 to 19.440 MHz
Other Fixed Frequencies
VC709 FMC Si570 Fixed Frequency
References
Note: This presentation applies to the VC709

VC709 Si570 Fixed Frequency Overview
Description
–The VC709 board has a Silicon Labs Si570 Programmable Oscillator that
defaults to 156.25 MHz. Via a series of bitstreams, 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 VC709

Xilinx VC709 Board

Vivado Software Requirements
Xilinx Vivado Design Suite 2014.1, Design Edition
Note: Presentation applies to the VC709

VC709 Setup
Connect a USB Type-
A to Mini-B cable to
the USB UART
connector on the
VC709 board
–Connect this cable to
your PC

VC709 Setup
Connect a USB Type-
A to Micro-B cable to
the USB JTAG
(Digilent) connector
on the VC709 board
–Connect this cable to
your PC
–Power on the VC709
board for UART Drivers
Installation

VC709 Setup
Install USB UART Drivers
–Go to http://www.silabs.com
–Search for Virtual port drivers
Note: Presentation applies to the VC709

VC709 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 VC709

VC709 Setup
Expand the Ports
Hardware
–Right-click on Silicon Labs
CP210x USB to UART
Bridge and select Properties
Note: Presentation applies to the VC709

VC709 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 VC709

VC709 Setup
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 the VC709

Setup for VC709 Si570 Fixed Frequency
Unzip the RDF0237 - VC709 Si570 Fixed Frequencies Design Files
(2014.1 C) zip file to your C:\ drive
–Available through http://www.xilinx.com/vc709
Note: Presentation applies to the VC709

VC709 Si570 Fixed Frequency
Open a Vivado Tcl Shell:
Start →All Programs →Xilinx Design Tools →Vivado 2014.1 →
Vivado 2014.1 Tcl Shell
Note: Presentation applies to the VC709

VC709 Si570 Fixed Frequency
Download the Frequency Monitor bitstream with Vivado
In the Vivado Tcl Shell type:
source
C:/vc709_si570_fixed_freq/ready_for_download/frequency_monitor.tcl
Note: Presentation applies to the VC709

VC709 Si570 Fixed Frequency
View the Debug Probes tab
–Select the probes and drag to the VIO - hw_vio_1 tab
Note: Presentation applies to the VC709

VC709 Si570 Fixed Frequency
View the 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: Presentation applies to the VC709

VC709 Si570 Fixed Frequency
Under Hardware, right click on the xc7vx690t_0 and select Program
Device…
Note: Presentation applies to the VC709

Changing Si570 from 156.25 to 19.440 MHz
Select set_19.440_mhz_si570_0.bit
Note: Presentation applies to the VC709