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AR# 30170

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder - Release Notes and Known Issues

Description

This Answer Record contains the Release Notes and Known Issues list for the CORE Generator LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder Core.

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

- New Features

- Bug Fixes

- Known Issues

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder Lounge:

http://www.xilinx.com/products/ipcenter/DO-DI-CTC-80216E-ENC.htm


The 802.16E Convolutional Turbo Code (CTC) Encoder core has been discontinued. Please see the Following PDN: 

http://www.xilinx.com/support/documentation/customer_notices/xcn14010.pdf

Solution

General LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder Issues

- N/A

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder 3.0

Initial Release in ISE 11.1

New Features

- ISE 11.1 software support

Bug Fixes

- N/A

Known Issues

- None

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder v2.1 rev1

Initial Release in ISE 9.2i IP Update 2

New Features

- Spartan-3A DSP support

Bug Fixes

- Same as v2.1

Known Issues

- Same as v2.1

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder v2.1

Initial Release in ISE 9.1i IP Update 1

New Features

- N/A

Bug Fixes

- CR 427689 - Hardware timeout associated with evaluation mode is enabled even if a full license exists

Known Issues

- N/A

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder v2.0 rev1

Initial Release in ISE 8.2i IP Update 3

New Features

- N/A

Bug Fixes

- CR 427689 - Hardware timeout associated with evaluation mode is enabled even if a full license exists

Known Issues

- Same as v2.0

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder v2.0

Initial Release in ISE 8.2i IP Update 2

New Features

- Support added for Virtex-5

Bug Fixes

- CR 232447: Incorrect switching of alternate data couples

--- Symptom: Incorrect data on PAR_Y2 and PAR_W2 outputs. 

The core was changed to comply with amendment Cor1/D5 of IEEE P802.16, which specifies switching of alternate data couples on ODD interleaver addresses

 

- CR 234370: Incorrect timing of RFFD output

--- Symptom: If FD_IN is sampled high on the first active clock edge after the core asserts RFFD, there will be errors in PAR_Y2 and PAR_W2 outputs, and errors in the last bit of either or both systematic outputs. 

This is because the core asserts RFFD one clock too early

Known Issues

- A hardware timeout could be generated even for a full license. See (Xilinx Answer 24209).

 

LogiCORE 802.16E Convolutional Turbo Code (CTC) Encoder v1.1

Initial Release in ISE 8.1i IP Update 1

New Features

- Support for Spartan-3, Spartan-3E, Virtex-II, Virtex-II Pro, and Virtex-4

- Implements IEEE802.16e Wireless MAN OFDMA PHY CIC encoder specification

- Supports optional 64-QAM modulation

- Supports optional hybrid-ARQ (HARQ)

- Simultaneous C1 and C2 encoding

Bug Fixes

- N/A

Known Issues

- Incorrect switching of alternate data couples. See (Xilinx Answer 23789).

- Corrected timing of RFFD output. See (Xilinx Answer 23789).

AR# 30170
Date Created 03/12/2008
Last Updated 04/02/2015
Status Active
Type General Article
Devices
  • Virtex-5