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I'm interested in using the SHARC 21065L SPORT for communication
among up to 6 single-SHARC boards in a rack, using the TDM feature. Are there any examples available that show how to set this up? Using 30 time slots, I can exchange up to 5 words per card with each frame, and I expect I can use DMA chaining to expand this to more words. I'd like to have what looks like a 10-word state "window" for each peer, updating at about 10 k samples/sec (20 k frames/sec). 1 word in each frame will carry a timestamp (for detecting a dead peer), identifier bits (which frame and peer), and a check code to validate the peer's frame data. Each peer will drive a common bus with an LVD driver, enabled by its transmit frame sync line. Is this a reasonable approach? Any gotchas to look out for? Kenneth Porter Kensington Laboratories, Inc. mailto: http://www.kensingtonlabs.com |
SPORT TDM mode
Started by ●August 31, 2000
