Embedded Information Transfer Technology Assessment.
Abstract
The objective of this study is to develop approaches for improved Line Replaceable Unit (LRU) internal communications, utilizing state-of-the-art techniques and technology, in order to reduce the growing number of interconnects with LRU's. Worst-case LRU data transfer requirements were established by analyzing internal signal routing, data rates, and duty cycles of the F-16 Fire Control Computer (FCC) and the Programmable Signal Processor (PSP). It was determined that 25/Mword/second is adequate for card-to-backplane (serial) transfers. Candidate designs for meeting these requirements were developed and then subjected to an extensive trade-off analysis. This analysis ultimately yielded the selection of Switched Network Electro-Optical (serial) and Electro-Optical Air-Gap (parallel) as the preferred approaches. The interface pin-count per module of the recommended designs has been reduces to approximately 40. This is substantially lower that the average of 250 connections per module in most conventional approaches and fulfills the primary objective of this program. Further, the zero insertion-force air-gap interfaces directly support modular architectures and enhance the prospects of making two-level maintenance concepts a practical reality. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 16, 1984
- Accession Number
- ADA142649
Entities
People
- B. Jerdee
- J. Elia
- J. Moreland
- L. A. Huff
- R. Allison
Organizations
- General Dynamics