6–20
Chapter 6: Board Test System
Using the Board Test System
Stratix V GX FPGA Development Kit
July 2012
Altera Corporation
User Guide
■
Pattern sync
—Shows the pattern synced or not synced state when the internal
loopback is enabled. The pattern is considered synced when the start of the data
sequence is detected after channel lock is acquired.
Port
The
Port
control allows you to specify which interface to test. The following port tests
are available:
■
SMA x1
(10 Gpbs+)
PMA Setting
The PMA Setting
button allows you to make changes to the PMA parameters that
affect the active transceiver interface.
1
For loopback testing, use the PMA button to place the Stratix V FPGA in serial
loopback mode.
The following settings are available for analysis:
■
Serial Loopback
—Routes signals between the transmitter and the receiver. Enter
the following values to enable the serial loopbacks:
0
= High speed serial transceiver signals to observe to 10G+ high speed transmit
data signal
1
= Serial loopback
■
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.
Data Type
The
Data type
control specifies the type of data contained in the transactions. The
following data types are available for analysis:
■
PRBS 7
—Selects pseudo-random 7-bit sequences.
■
PRBS 15
—Selects pseudo-random 15-bit sequences.
■
PRBS 23
—Selects pseudo-random 23-bit sequences.
■
PRBS 31
—Selects pseudo-random 31-bit sequences.
■
HF—
Selects highest frequency divide-by-2 data pattern "10101010"
■
HF1—
Selects next highest frequency divide-by-6 data pattern "111000111000"
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