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AR# 30172

LogiCORE Convolutional Encoder - Release Notes and Known Issues

Description

This Answer Record contains the Release Notes and Known Issues list for the CORE Generator LogiCORE Convolutional Encoder core.

The following information is listed for each version of the core:

- New Features
- Supported Devices
- Resolved Issues
- Known Issues

LogiCORE Convolutional Encoder Lounge:

http://www.xilinx.com/products/ipcenter/Convolutional_Encoder.htm

Solution

General LogiCORE Convolutional Encoder Issues

- N/A

LogiCORE Convolutional Encoder v8.0

Initial Release in ISE 13.4

New Features

- ISE 13.4 software support

- AXI interface added to core

Supported Devices

Zynq-7000*

Virtex-7 XC XT/HT/T
Virtex-7 -2L XC XT/T

Virtex-6 XC CXT/LXT/SXT/HXT
Virtex-6 XQ LXT/SXT
Virtex-6 -1L XQ LXT/SXT
Virtex-6 -1L XC LXT/SXT

Kintex-7 XC
Kintex-7 -2L XC

Artix-7 XC

Spartan-6 XC LX/LXT
Spartan-6 XA
Spartan-6 XQ LX/LXT
Spartan-6 -1L XQ LX
Spartan-6 -1L XC LX

ResolvedIssues

-None

Known Issues

-None

LogiCORE Convolutional Encoder v7.0

Initial Release in ISE 11.2

New Features

- ISE 11.2 software support
- Virtex-6 and Spartan-6 support
- Asynchronous reset input removed.

Bug Fixes

- N/A

Known Issues

- N/A

LogiCORE Convolutional Encoder v6.1

Initial Release in ISE 9.1i IP Update 3

New Features

- Support added for Spartan-3A DSP

Bug Fixes

- N/A

Known Issues

- N/A

LogiCORE Convolutional Encoder v6.0

Initial Release in ISE 8.2i IP Update 1

New Features

- Support for Virtex-5

Removed Features

- Removed Virtex and Spartan-II support from this version of the core. Please use v3.0 if targeting these architectures.

Bug Fixes

- CR227296 : Convolutional Encoder v5.0: Output rate is incorrect in template

Known Issues

- N/A

LogiCORE Convolutional Encoder v5.0

Initial Release in ISE 8.1i IP Update 1

New Features

Bug Fixes

- CR217738 : GUI Issue - User specified codes are not used to generate core
--- Symptom: Default codes were used for core generation

Known Issues

- N/A

LogiCORE Convolutional Encoder v4.0

Initial Release in ISE 7.1i IP Update 1

New Features

- Support added for Virtex-4

Bug Fixes

- N/A

Known Issues

- N/A

LogiCORE Convolutional Encoder v3.0

Initial Release in ISE 5.1i IP Update 2

New Features

- Support added for Spartan-3

Bug Fixes

- Fixed a problem where the RDY signal was one cycle early in the non-punctured case. The data sheet has been updated to reflect this change.

Known Issues

- Why is the RDY signal one cycle too early when the non-punctured mode is used? See (Xilinx Answer 16936).

LogiCORE Convolutional Encoder v2.0

Initial Release in ISE 4.2i IP Update 2

New Features

- Support added for Virtex-II Pro and Spartan-IIE
- Non-punctured code capability increased from a maximum of 3 output bits to a maximum of 7
- Punctured code capability increased for an n/n+1 code to an n/m code where n < 2n. Range of n remains the same (2 to 12)

Bug Fixes

- CR #141013: Pipeline on the CE signal removed for single channel punctured codes

Known Issues

- N/A

LogiCORE Convolutional Encoder v1.0

Initial Release in ISE 3.3i IP Update 4

New Features

- Parameterizable constraint length from 3 to 9
- Parameterizable convolution codes
- Parameterizable puncture codes
- Puncturing rates from 2/3 to 12/13 available

Bug Fixes

- N/A

Known Issues

- N/A

AR# 30172
Date Created 03/12/2008
Last Updated 12/15/2012
Status Active
Type General Article
IP
  • Convolutional Encoder