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Discussion Groups | Analog Devices DSPs | SPORT of SHARC
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
SPORT of SHARC - Ralf Heuser-Lindner - May 12 9:52:00 2000
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I have a question about the TFS signal of an SPORT in an ADSP 21061: I set up the TFS of SPORT 1 as follows: Internally generated (ITFS = 1), data independent (DITFS = 1), late (LAFS = 1), active low (LTFS=1). When SPORT is enabled it works as expected. When SPORT is disabled (SPEN=0), I would expect the TFS signal beeing high (inactive), but I observe it low. Is this correct? Thanks for any advice. Ralf Heuser-Lindner |
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Re: SPORT of SHARC - Michael Haertl - May 12 12:28:00 2000
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Ralf Heuser-Lindner wrote: > I have a question about the TFS signal of an > SPORT in an ADSP 21061: > When SPORT is enabled it works as expected. > When SPORT is disabled (SPEN=0), I would > expect the TFS signal beeing high (inactive), > but I observe it low. Is this correct? on my development board (bittware snaggletooth) an inactive TFS is also low. inactive data and clock lines are high. according to the manual SPORT data and clock have internal pull-ups, whereas the frame lines have not. so your observation seems to be ok. Michael -- /* */ |
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