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AR# 30166

LogiCORE 3GPP Turbo Convolutional Code Decoder - Release Notes and Known Issues

Description

This Answer Record contains the Release Notes and Known Issues list for the CORE Generator LogiCORE 3GPP Turbo Convolutional Code Decoder Core. 

 

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

- New Features 

- Bug Fixes 

- Known Issues 

 

LogiCORE 3GPP Turbo Convolutional Decoder Lounge: 

http://www.xilinx.com/products/ipcenter/DO-DI-TCCDEC-UMTS.htm


The 3GPP Turbo Convolutional Decoder core has been discontinued. Please see the Following PDN: 

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

Solution

General LogiCORE 3GPP Turbo Convolutional Code Decoder Issues 

- N/A 

 

LogiCORE 3GPP Turbo Convolutional Code Decoder v4.0 

Initial Release in 11.2 

New Features 

- ISE 11.2 software support 

- Virtex-6 and Spartan-6 support 

Bug Fixes 

- Potential for bit error after SCLR 

- Potential for error in RDY when RD_OUTPUT port is not selected 

Known Issues 

- N/A 

General LogiCORE 3GPP Turbo Convolutional Code Decoder Issues 

- N/A 

 

LogiCORE 3GPP Turbo Convolutional Code Decoder v3.1 

Initial Release in ISE 9.1i IP Update 3 

New Features 

- Spartan-3A DSP support  

Bug Fixes 

- CR 436068: Incorrect behavior of ND input. 

ND must be held High for 2 extra clock cycles after RFD is deasserted.

See (Xilinx Answer 24107)

Known Issues 

- N/A 

 

 

LogiCORE 3GPP Turbo Convolutional Code Decoder v3.0 

Initial Release in ISE 8.2i IP Update 2 

New Features 

- Support added for Virtex-5  

- Support added for ISE 8.2i 

Bug Fixes 

- N/A 

Known Issues 

- When I select the ND input, why do I receive decoding errors? See (Xilinx Answer 24107)

 

 

LogiCORE 3GPP Turbo Convolutional Code Decoder v2.0 

Initial Release in ISE 8.1i IP Update 1 

New Features 

- Support added for Virtex-4  

- Support added for ISE 8.1i 

- Additional pipelining added to increase throughput 

Features Removed 

- External interleaver capability removed 

- External block memory capability removed 

- Optional memory management capability removed - memory management unit is always created 

- MAX and MAX STAR algorithm options removed 

Bug Fixes 

- N/A 

Known Issues 

- When I select the ND input, why do I receive decoding errors? See (Xilinx Answer 24107)

 

 

LogiCORE 3GPP Turbo Convolutional Code Decoder v1.0 

Initial Release in ISE 6.3i IP Update 4 

New Features 

- Implements 3GPP/UMTS Specifications 

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

- Full 3GPP block range supported, 40-5114 

- MAX*, MAX, or MAX-SCALE algorithms 

- Sliding Window size of 32 or 64 

- Internal or external RAM data storage with optional memory management unit 

- Fast Termination option 

- Support for rate 1/3 or 1/5 coded inputs 

Bug Fixes 

- N/A 

Known Issues 

- N/A

AR# 30166
Date Created 03/11/2008
Last Updated 04/02/2015
Status Active
Type General Article
Devices
  • Virtex-5