Altera Stratix V GX Edition, Руководство пользователя

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Chapter 6: Board Test System 6–17
Using the Board Test System
July 2012 Altera Corporation Stratix V GX FPGA Development Kit
User Guide
■ Pattern sync —Shows the pattern synced or not synced state. 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:
■ QSFP x4 (10 Gbps+)
■ HSMB x4 Transceivers (10 Gbps+)
■
HSMB x41 Parallel (50 Mbps)
PMA Setting
The PMA Setting button allows you to make changes to the PMA parameters that
affect the active transceiver interface. 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 loopback on the board
1
= Serial loopback
2
= Reverse serial loopback pre-CDR
4
= Reverse serial loopback post-CDR
■ 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"
■ HF2 —Selects second lowest frequency divide-by-22 data pattern
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