IPT-DSPBUILDER Altera, IPT-DSPBUILDER Datasheet - Page 129

• Manufacturer Part Number: IPT-DSPBUILDER
• Description: DSP BUILDER SOFTWARE
• Manufacturer: Altera
• Type: DSPr

Specifications of IPT-DSPBUILDER

• Function: DSP Builder
• License: Initial License
• Software Application: IP CORE, DSP BUILDER
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Supported Families: Arria GX, Arria II GX, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Chapter 7: Using the Interfaces Library
Avalon-ST Interface
Avalon-ST Packet Formats
© June 2010 Altera Corporation
Figure 7–13
each beat—an in phase symbol I and a quadrature symbol Q. In this example, each
symbol is eight bits wide.
Figure 7–13. Packetized Data Transfer
The
transfer of data associated with multiple channels. Altera recommends that you
achieve this mechanism with packet based transfers where each packet has a
deterministic format and each channel is allocated a specific field (time slot in a
packet).
Packet transfers require two additional signals that mark the start and the end of the
packet. The MegaCore functions have internal counters that count the samples in a
packet so they know which channel a particular sample is associated with and
synchronize appropriately with the start and end of packet signals. In
in phase and quadrature components associated with three different channels convey
between two MegaCore functions.
You can allocate the data associated with each channel a field in a packet. To describe
the relationship between the input and the output interfaces of a MegaCore function,
you must define the packets associated with each interface.
Two parameters describe the basic format of a packet: SymbolsPerBeat, and
PacketDescription. The SymbolsPerBeat parameter defines the number of
symbols that DSP Builder presents in parallel on every valid cycle. The
PacketDescription is a string description of the fields in the packet.
A basic PacketDescription is a comma-separated list of field names, where a field
name starts with a letter and may include the characters a-zA-Z0-9_. Typical field
names include Channel1, Channel2, and Q. Field names are case sensitive and
white space is not permitted.
Avalon Interface Specifications
gives an example of a data transfer where two symbols are conveyed on
Preliminary
also describe several mechanisms to support the
DSP Builder Standard Blockset User Guide
Figure
7–13, the
7–21