A FLEXIBLE MODULE LIBRARY FOR CUSTOM DSP APPLICATIONS IN A MULTIPROCESSOR ENVIRONMENT

In this paper, the module library for the CATHEDRAL-II synthesis environment is discussed. The underlying architectural style of the environment is defined as a hierarchical composition of flexible and parameterizable data paths, microcoded control units, interprocessor communication protocols, and input/output interfaces. This paper concentrates on the module library to construct the data paths. A data path is called an execution unit (EXU), which consists of three parts: an input block, an output block, and a core. Only the core varies for the different EXU's. The topology and functionality of an EXU can be influenced by a set of parameters. The module library consists of two parts, a leaf-cell library and a procedure library, to place and interconnect the leaf cells to create functional building blocks that compose one EXU. The EXU's are guaranteed to work at 10 MHz. The described modules are implemented and tested. © 1990 IEEE