IPR-FFT Altera, IPR-FFT Datasheet - Page 52

• Manufacturer Part Number: IPR-FFT
• Description: IP CORE Renewal Of IP-FFT
• Manufacturer: Altera
• Type: MegaCorer

Specifications of IPR-FFT

• Software Application: IP CORE, DSP Filters And Transforms
• Supported Families: Arria GX, Cyclone, HardCopy, Stratix
• Features: Bit-Accurate MATLAB Models, Radix-4 And Mixed Radix-4/2 Implementations
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Function: Fast Fourier Transform Processor
• License: Renewal License
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

3–18
Table 3–5. Component Specific Signals (Part 2 of 2)
Table 3–6. Error Handling Behavior
FFT MegaCore Function User Guide
inverse
clk_ena
Missing SOP
Missing EOP
Unexpected EOP
Signal Name
Error
Input
Input
Direction
source_error
Incorrect usage of the Avalon-ST interface protocol on the sink interface results in a
error on source_error.
Avalon-ST transfer is detected. If an error occurs, the behavior of the FFT is undefined
and you must reset the FFT with reset_n.
01
10
11
1
1
Asserted when valid goes high, but there is no start of frame.
Asserted if the FFT accepts N valid samples of an FFT frame, but there is no EOP signal.
Asserted if EOP is asserted before N valid samples are accepted.
Size
Inverse FFT calculated if asserted. Only sampled at SOP.
Active-high global clock enable input. If de-asserted, the FFT is disabled.
Table 3–6
defines the behavior of the FFT when an incorrect
Description
Description
© December 2010 Altera Corporation
Chapter 3: Functional Description
Signals