1–84
Chapter 1: Cyclone IV Transceivers Architecture
Self Test Modes
February 2015
Altera Corporation
You can enable the serial loopback option to loop the generated PRBS patterns to the
receiver channel for verifier to check the PRBS patterns. When the PRBS pattern is
received, the
rx_bisterr
and
rx_bistdone
signals indicate the status of the verifier.
After the word aligner restores the word boundary, the
rx_bistdone
signal is driven
high when the verifier receives a complete pattern cycle and remains asserted until it
is reset using the
rx_digitalreset
port. After the assertion of
rx_bistdone
, the
rx_bisterr
signal is asserted for a minimum of three
rx_clkout
cycles when errors
are detected in the data and deasserts if the following PRBS sequence contains no
error. You can reset the PRBS pattern generator and verifier by asserting the
tx_digitalreset
and
rx_digitalreset
ports, respectively.
1111100000
N
—
—
—
Y
—
2.5
3.125
Notes to
(1) Channel width refers to the
What is the channel width?
option in the
General
screen of the ALTGX MegaWizard Plug-In Manager. Based on the
selection, an 8 or 10 bits wide pattern is generated as indicated by a
Yes (Y)
or
No (N)
.
(2) A verifier and associated
rx_bistdone
and
rx_bisterr
signals are not available for the specified patterns.
Table 1–25. PRBS, High and Low Frequency Patterns, and Channel Settings (Part 2 of 2)
Patterns
Polynomial
8-bit Channel Width
10-bit Channel Width
Channel
Width
of
8 bits
(1)
Word
Alignment
Pattern
Maximum
Data Rate
(Gbps) for
F324 and
Smaller
Packages
Maximum
Data Rate
(Gbps) for
F484 and
Larger
Packages
Channel
Width
of
10-bits
(1)
Word
Alignment
Pattern
Maximum
Data Rate
(Gbps) for
F324 and
Smaller
Packages
Maximum
Data Rate
(Gbps) for
F484 and
Larger
Packages
Summary of Contents for Cyclone IV
Page 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Page 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Page 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
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