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VSC8257/VSC8258 Evaluation Board

ENT-AN1280 VPPD-04670 ENT-AN1280 User Guide Revision 1.3

Hardware Options

The following sections describe the hardware options.

4.1

Power Supply Options

The evaluation board can also be powered by an external 5 V power supply. Use a pair of banana cables
to connect a bench-style power supply capable of 4 A at 5 V to the board. Connect 5 V to J45 and GND
to J46.

4.2

Reference Clock Options

The evaluation board is preconfigured with a clock frequency of 156.25 MHz.

Summary of Contents for VSC8257

Page 1: ...ENT AN1280 User Guide VSC8257 VSC8258 Evaluation Board October 2018 ...

Page 2: ...aluation Board 2 2 1 References 2 3 Quick Start 3 4 Hardware Options 4 4 1 Power Supply Options 4 4 2 Reference Clock Options 4 5 Software 5 5 1 USBXpress Driver Installation 5 5 2 GUI Setup 5 5 3 Main Page 6 5 4 Routing 7 5 5 BIST 8 5 6 SFP 9 5 7 Register List 9 5 8 RMON 10 5 9 KR Status 10 5 10 I O Control 11 5 11 Clocking 11 5 12 Command Line Interface 12 6 Usage Examples 14 6 1 Packet BIST 14 ...

Page 3: ...g with the most current publication 1 1 Revision 1 3 Revision 1 3 was published in September 2018 There were no changes to the technical content 1 2 Revision 1 2 Revision 1 2 was published in October 2016 The latest GUI interface was added 1 3 Revision 1 1 Revision 1 1 was published in October 2015 The improved interface was added 1 4 Revision 1 0 Revision 1 0 was published in June 2014 It was the...

Page 4: ... is provided for the user to control the evaluation board from a PC using a USB cable The GUI allows the user to configure devices access registers and run scripts The GUI may be used without an evaluation board in a demonstration mode to provide an introduction to the device features The default configuration of the evaluation board allows the user to easily connect it to lab equipment such as a ...

Page 5: ...driver as described in section USBXpress Driver Installation Install the GUI software as described in section GUI Setup Launch the GUI From the EVB connection window select the matching board serial number and click Launch GUI The clock is pre configured at 156 25 MHz On the main page click the option This will initialize the device Due to the speed of 10G LAN Mode the microcontroller and USB inte...

Page 6: ...rdware options 4 1 Power Supply Options The evaluation board can also be powered by an external 5 V power supply Use a pair of banana cables to connect a bench style power supply capable of 4 A at 5 V to the board Connect 5 V to J45 and GND to J46 4 2 Reference Clock Options The evaluation board is preconfigured with a clock frequency of 156 25 MHz ...

Page 7: ... development kit Once the USBXpress driver is installed connect the USB cable to the evaluation board and the PC In order to double check that the USBXpress driver is installed and recognizing the evaluation board go to the Control Panel and click on Inspect the Universal Serial Bus System Hardware Device Manager controllers listed to see if USBXpress Device appears The following image shows that ...

Page 8: ...ee files match to the version of the installed USBExpress driver and then rename that file to be SiUSBxp dll 5 3 Main Page The following image shows the GUI main page Figure 4 GUI Main Page The serial number of the evaluation board appears on the left corner of the page along with the silicon revision communication protocol used and the port address SPI is the communication protocol used and Chann...

Page 9: ...ling of the error count This will retain the last values While enabled the error count register polling is not interrupted when any other page tab is viewed Every channel has its own generator and checker which allows two or more channels to be started at the same time 5 4 Routing As shown the routing page provides various options available for routing traffic between the host side and the line si...

Page 10: ...king the box enables the loopback while un checking disables it 5 5 BIST The following image shows the BIST page Figure 7 GUI BIST Page The BIST page is not for PRBS BIST but for packet based BIST There is a packet BIST engine on each channel The DA SA type PTP time packet length IPG length and the data could be configured The CFG configuration register and the data path registers are also program...

Page 11: ...s 0x0 0 ENABLE R W Enable packet generator 0 Generator is disabled 1 Generator is enabled Pattern generator data cannot Note simultaneously be inserted in the egress and ingress data paths Insertion of pattern generator data into the paths is controlled by 4xEA20 7 and 4xEA20 8 There are additional restrictions in using this bit Note for 1G mode Please consult the factory 0x0 5 6 SFP The informati...

Page 12: ...splayed To write to a device register highlight the desired register enter the hexadecimal value in the Value Hex box and click Clicking will read the same Write Read register showing the register s new contents There is an advanced mode where when enabled users can jump to any device and any register offset by typing in the corresponding values without going through the specific register tab 5 8 ...

Page 13: ...d The values of the resulted C 1 C0 and C 1 will also be updated at the Tx Tap Values box 5 10 I O Control The following image shows the I O control page Figure 12 GUI I O Control Page On this page the user can adjust the pre cursor main cursor and post cursor of the transmitter of each lane On the receiver side the default mode is for SR LR ER To have the mode support DAC the user can enable it b...

Page 14: ...e or host to be lane synced locked to the local reference clock or the Rx clock of the same channel or the Rx clock from other channels Note When cross connect is enabled the Tx clocks of all host channels must be lane synced to the local reference clock 5 12 Command Line Interface Clicking on from the toolbar opens the command line interface CLI window From Board Vitesse CLI here users can load i...

Page 15: ... VSC8258 Evaluation Board ENT AN1280 VPPD 04670 ENT AN1280 User Guide Revision 1 3 13 The following images show the command line interface Figure 14 Command Line Interface I Figure 15 Command Line Interface II ...

Page 16: ... registers might not get updated until the user leaves and then returns to this page 6 2 PRBS31 BER The PRBS31 BER resides on the BER page on the right column of the GUI display On the BER page click and to exercise the PRBS31 BER Starting the Start Generator Start Checker checker will start the timer and show the current error count and bit error rate The value of Error Count and BER is continuou...

Page 17: ...ndependently determine suitability of any products and to test and verify the same The information provided by Microsemi hereunder is provided as is where is and with all faults and the entire risk associated with such information is entirely with the Buyer Microsemi does not grant explicitly or implicitly to any party any patent rights licenses or any other IP rights whether with regard to such i...

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