IPR-CIC Altera, IPR-CIC Datasheet - Page 33

• Manufacturer Part Number: IPR-CIC
• Description: IP CORE Renewal Of IP-CIC
• Manufacturer: Altera

Specifications of IPR-CIC

• Software Application: IP CORE, DSP Filters And Transforms
• Supported Families: Arria GX, Cyclone, HardCopy, Stratix, Stratix II
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

Chapter 4: Functional Description
Avalon Streaming Interface
Avalon Streaming Interface
© December 2010 Altera Corporation
f
Figure 4–10. CIC and Compensation Filter Responses
For more information, refer to
The Avalon
interface. The Avalon-ST interface defines a standard, flexible, and modular protocol
for data transfers from a source interface to a sink interface and simplifies the process
of controlling the flow of data in a datapath.
Avalon-ST interface signals can describe traditional streaming interfaces supporting a
single stream of data without knowledge of channels or packet boundaries. Such
interfaces typically contain data, ready, and valid signals.
The Avalon-ST interface can also support more complex protocols for burst and
packet transfers with packets interleaved across multiple channels.
The Avalon-ST interface inherently synchronizes multi-channel designs, which allows
you to achieve efficient, time-multiplexed implementations without having to
implement complex control logic.
The Avalon-ST interface supports backpressure, which is a flow control mechanism
where a sink can signal to a source to stop sending data. The sink typically uses
backpressure to stop the flow of data when its FIFO buffers are full or when there is
congestion on its output.
When designing a datapath which includes the CIC MegaCore function, you may not
need backpressure if you know that the downstream components can always receive
data.
®
Streaming (Avalon-ST) interface is an evolution of the Atlantic™
AN455: Understanding CIC Compensation
CIC MegaCore Function User Guide
Filters.
4–9