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Lattice reference designs enhance PLD interfaces

Posted: 06 Jun 2012     Print Version  Bookmark and Share

Keywords:PLD  reference design  EFB 

Lattice Semiconductor Corp. unveils four reference designs that aim to simplify and enhance the usability of the built-in I2C, SPI and User Flash Memory functions in its low cost, low power MachXO2 PLD family's Embedded Function Block (EFB).

Five new demonstration designs and three updated application notes focused on the embedded, Flash memory-based EFB are also now available.

The reference designs extend EFB ease-of-use with ready-to-use RTL code for the following functions, each with standard data and command interfaces:
 • I2C-Slave (Lattice reference design number RD1124)
 • SPI-Slave (RD1125)
 • UFM access (RD1126)
 • Embedded Programming (RD1129)

The RTL code is fully commented and parameterized, so it can be easily edited for customised implementations.

The five new demonstration designs implement the EFB reference designs on Lattice low cost hardware development kits, including the discounted MachXO2 Pico Development Kit, in the following system configurations:
 • I2C Master with I2C Slave (Lattice demonstration design number UG55)
 • SPI Master with SPI Slave (UG56)
 • Master I2C & SPI Using 'C' and the LatticeMico8� Microcontroller (UG54)
 • Programming via the Wishbone Bus Interface (UG57)
 • Embedded Programming via I2C (UG58)

These designs, each with commented, pre-verified RTL and C code, are easily re-usable to help engineers get a head start on their own implementations. Updated documentation for MachXO2 programming, configuration and EFB hard IP functions can be found in the following application notes:
 • TN1204—MachXO2 Programming and Configuration Usage Guide
 • TN1205—Using User Flash Memory and Hardened Control Functions in MachXO2 Devices User's Guide
 • TN1246—Using User Flash Memory and Hardened Control Functions in MachXO2 Devices Reference Guide

Lattice's entire portfolio of reference designs optimised for the MachXO2 family can be downloaded at no cost from the Lattice website at www.latticesemi.com/ip.

Promotional pricing for the MachXO2 Pico Development Kit is Rs.1,518.32 ($29) for kits ordered via the Lattice online store at www.latticesemi.com/store and through Lattice distributors through December 31, 2012, or while promotional quantities last.





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