Delivering FPGA-based System On-chip Observability

Corus Validation Suite Datasheet

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Features & Benefits

  • Very Wide Data Capture Width with Extensive Compression to Optimize Depth
  • Time-correlated View across Multiple Clock Domains and across FPGAs
  • Any Observed Signal, Any Time, Avoids Frequent FPGA Re-synthesis
  • Complex Triggering and Cross-triggering with Test Equipment and Software Debuggers
  • Fast and Easy Capture Probe Insertion in FPGAs

Delivering Design-for-Visibility

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Corus design flow.
 

Imagine how much faster FPGA system validation and debug would be if you were able to see a time-correlated view of all of your system, not only serial I/O, buses, and software code, but inside the FPGAs as well. The Corus FPGA Systems Validation Suite restores internal visibility by addressing these limitations up-front in the design phase. Corus enables true Design-for-Visibility.

Embedded systems design instruments are fundamental to Design-for-Visibility. Embedded instruments must:

  • Scale with technology
  • Leverage the same trends that are driving complexity into systems
  • Run at speed within the FPGA
  • Be scalable across blocks, design, chips, boards, and systems
  • Be deployable across the development cycle and into final system

 

The Corus FPGA Systems Validation Tool Suite is the ideal Design-For-Visibility tool. Corus:

  • Produces a system-wide time-correlated view
  • Enables observations of large numbers (thousands) of signals
  • Delivers “system-time” scale trace depths
  • Is implementable across FPGA vendors and ASIC technologies

 

Corus is a suite of software tools and IP providing everything required to enhance visibility on-chip and off-chip. At the design stage, the easy-to-use Implementor tool applies advanced proprietary algorithms to help you design and implement minimized on-chip signal capture probes quickly and efficiently on your FPGAs.

Implementor Tool

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Implementor tool.
 

  • Automatic infrastructure generation
  • OptiRank recommends signals for probing
  • Automatic clock discovery
  • Work from any level of design hierarchy
  • FPGA resource utilization summary
  • Equivalent signal identification
  • Preserves RTL source names

 

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Data compression allows deep trace depths which enables the system to clock cycle-accurate detail with minimal FPGA memory utilization.
 

During validation, the capture probes are managed by an Analyzer tool through the JTAG port. Complex and cross triggers are easily set up. The Corus “any signal, any time” feature avoids seemingly endless re-synthesis when selecting signals. The resulting highly compressed captures are processed off-chip by proprietary algorithms that recreate the internal chip data and re-synchronize the captures from different clock domains and FPGAs into one view.

Corus can be used with Xilinx, Altera, or Actel FPGAs and requires no special I/O, connectors, or FPGA topology. Simple JTAG connectivity allows full synchronized debug across FPGAs.

 

Characteristics

General

CharacteristicDescription
Operating System Support

Ubuntu 9 (32 and 64 bit)

Ubuntu 10 (32 and 64 bit)

Red Hat Enterprise Linux 4 (32 and 64 bit)

Red Hat Enterprise Linux 5 (32 and 64 bit)

SUSE Linux Enterprise 11 (32 and 64 bit)

Windows XP (32 and 64 bit) – Analyzer only

Language Support

IEEE 1076-1993/1987 (VHDL)

IEEE 1800-2009 (SystemVerilog)

IEEE 1364-2001 (Verilog)

“Mixed-language” combinations of the above

Target FPGA

CharacteristicDescription
JTAG Probes

Altera USB-Blaster

All Xilinx JTAG Probes (Xilinx Impact 12.4 or later must be installed)

Amontec JTAGKey, JTAGKey2

JTAG TAP Interfaces

Altera TAP

Xilinx Virtex-4, Virtex-5, Virtex-6, Spartan-3, Spartan-6 TAPs

Actel ProASIC UJTAG TAP

Tektronix-supplied JTAG TAP

FPGA Synthesis Tools/Flows

Mentor Precision (2010a or later)

Synopsys Synplify (2010.09 or later)

Xilinx ISE (12.4 or later)

Altera Quartus (11.0 or later)

Actel Libero SoC (10.0 or later)

Instruments

CharacteristicDescription
General

- Bit- and word-level compression of trace data before storage (independent per capture station) with potential compression ratios >1000X

- Arbitrary signal selection technology and extensive data compression enable effective debug of thousands of signals with as little as 1 dedicated block-RAM

- Inter-station cross-triggering between all capture stations including across FPGAs

- External trigger-in/trigger-out – requires two dedicated FPGA I/O pins

Number of Independent Capture Stations per FPGA1 to 255
Number of Instrumented FPGAs per JTAG Chain1 to 63
Station Widths (Configurable per capture station)16, 32, 64, 128, 256, 512, 1024
Station Storage RAM Sizes (Configurable per station)1 Kbits to 8 Mbits
Any-Signal-Any-Time Bit-level Signal SelectionUp to 64K signals per station
Flexible Instrumentation Options to Allow Lightweight Capture Scenarios

LUT utilization formula:

LUT Cost (measured on Virtex-5) ~= 1500 + 3000(m/128) + 4n

m = maximum simultaneous observations

n = total number of observable signals

Implementor

CharacteristicDescription
General

- RTL-level naming for VHDL, Verilog, and SystemVerilog during instrumentation

- Automatic clock discovery during instrumentation

- Automatic assignment of observed signals to clock capture stations during instrumentation

- Equivalent signal identification (prevents re-instrumenting of redundant RTL structures)

- Hierarchical signal browsing during signal selection in Implementor

- GUI or TCL-based Batch mode for Implementor

- Implementor project file to enable efficient re-instrumentation of existing RTL

- Minimum impact "in-place" modification of original design RTL

- Automatic black-boxing of unknown modules

- User-controlled black-boxing of modules pre-elaboration (increases runtime performance)

Instrumentable RTL Constructs

Input Ports

Output Ports

Sequential Elements

Combinational Signals

Base elements of multi-dimensional arrays (all languages)

Base elements of complex data types and interfaces (VHDL and SystemVerilog)

OptiRank (Design or block level)

State Machine Identification Output Ports

Critical Node Identification

Critical Node Ranking

Automatic Signal Selection during Instrumentation (at any design level)

All inputs

All outputs

All flip-flops

All state bits

Import of Signal Selection in Implementor from Existing Formats

Verdi session file

DVE session file

Plain Text

XML

Analyzer

CharacteristicDescription
General

- Time correlation of capture station data across clock domains and FPGAs (single coherent waveform view from all instruments)

- GUI or command-line based Batch mode for Analyzer

- Analyzer project with unlimited named configurations to store signal selections and triggers

- VCD file generation to enable waveform viewing with industry-standard waveform viewers

- User-configurable automatic launch of waveform viewer from Analyzer window

- RTL-level naming for analysis and data presentation

- Hierarchical browsing of signals during signal selection in Analyzer

- Automatic real-time frequency detection on a per capture station basis

Time-aware Conditional Capture

Continuous mode

Windowing mode

Local TriggeringUp to 8 equation bits
Bus-based TriggeringUp to 32 bits
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