Intel altera Cyclone V SoC - Page 38

• 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:
— XCVR: inserts 4 errors at 1 click due to 4 test control blocks in the design.
— LVDS: inserts 3 errors at 1 click due to 3 test control blocks in the design.
— CMOS: 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.
Attention: Support for this tap is device and software version dependent.
— 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.
5. Board Test System
830285 | 2024.10.07
Cyclone
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V SoC Development Kit User Guide
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