Altera Arria V SoC Manual de usuario descargar pdf (Pagina 31)

Chapter 5: Board Test System 5–11

Using the Board Test System

June 2014 Altera Corporation Arria V SoC Development Kit

User Guide

■ bits—Displays the number of bits transmitted since clicking Start.

■ Inserted errors—Displays the number of errors inserted by clicking Insert Error

button.

■ Detected errors—Displays the number of bit errors detected by the error checking

circuitry.

■ BER—Displays the bit error rate of the interface.

■ PLL lock—Displays Yes if the SDI PLL is locked.

■ Pattern sync—Displays Yes if the receiver has detected the input data pattern.

■ Start— Starts the PRBS data test and begins to monitor and update screen with

live test results.

■ Stop—Stops the PRBS data test.

■ Insert Error—Inserts an error into a data stream that is detected by the receiver

when in loopback using the included video cable.

With the Insert Error, there are differences among the three ports:

SFP A—Inserts 4 errors at 1 click due to 4 test blocks control.

SFP B—Inserts 3 errors at 1 click due to 3 test blocks control.

SMA—Inserts 1 error at 1 click.

■ Clear—Clears the Detected errors counter.

■ PMA Setting—Opens the PMA settings window that allows for adjusting the

analog transceiver settings, such as output voltage, loopback settings, and

equalization.

The following settings are available for analysis:

■ Serial Loopback—Routes the selected TX output signal back to the RX input

signal on-chip to verify operation without using an external loopback board.

■ VOD—Specifies the voltage output differential of the transmitter buffer.

■ Pre-emphasis tap

■ Pre—Specifies the amount of pre-emphasis on the pre-tap of the transmitter

buffer.

■ First post—Specifies the amount of pre-emphasis on the first post tap of the

transmitter buffer.

■ Second post—Specifies the amount of pre-emphasis on the second post tap

of the transmitter buffer.

■ Equalizer—Specifies the setting for the receiver equalizer.

■ DC gain—Specifies the DC portion of the receiver equalizer.

■ PRBS—Selects the transmit pattern and sets the receive error detection

circuitry to expect the same pattern for use in loopback testing.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 45 46

Sin comentarios

Altera Arria V SoC Manual de usuario Pagina 31