Error control, Start, Stop – Altera Arria II GX FPGA User Manual

Page 37: Performance indicators

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Chapter 6: Board Test System

6–17

Using the Board Test System

February 2011

Altera Corporation

Arria II GX FPGA Development Kit User Guide

Memory

—Selects a generic data pattern stored in the on chip memory of the

Arria II GX device.

Math

—Selects data generated from a simple math function within the FPGA

fabric.

Error Control

This control displays data errors detected during analysis and allows you to insert
errors:

Detected Errors

—Displays the number of data errors detected in the hardware.

Inserted Errors

—Displays the number of errors inserted into the transmit data

stream.

Insert Error

—Inserts a one-word error into the transmit data stream each time you

click the button. Insert Error is only enabled during transaction performance
analysis.

Clear

—Resets the Detected errors and Inserted errors counters to zeros.

Start

This control initiates HSMC transaction performance analysis.

Stop

This control terminates transaction performance analysis.

Performance Indicators

These controls display current transaction performance analysis information collected
since you last clicked Start:

TX

and RX performance bars—Show the percentage of maximum theoretical data

rate that the requested transactions are able to achieve.

Tx (MBytes/s)

and Rx (MBytes/s)—Show the number of bytes of data analyzed

per second. The HSMA transceiver bus is 4 bits wide and the data rate is
3.75 Gbps, totaling 1.5625 GBps full-duplex. The LVDS SERDES bus is 17 bits
wide. The transmit data bus is 16 bits wide and the frequency is 300 MHz double
data rate (600 Mbps per pin), equating to a theoretical maximum bandwidth of
1200 MBps.

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