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Discussion Groups | TMS320C28x | +/- 5v TTL serial signal to 0/3v for sci port
Technical discussions about the TI C28x DSPs (including the C2810, C2811, C2812, F2801, F2806, F2808, F2810,, F2811, F2812, R2811 and R2812).
+/- 5v TTL serial signal to 0/3v for sci port - krs3...@drexel.edu - May 3 7:37:13 2007
Hello, I am trying to interface a serial device (GPS receiver) with the f2812. The device gives the serial signal at +/- 5v as it should but the dsp requires all serial signals to be between 0 and 3.3v . Is there a simple circuit that can be used for this or some type of conversion cable? Thanks for any advice! Kevin You can post a message or access and search the archives of this group on DSPRelated.com: http://www.dsprelated.com/groups/c28x/1.php _____________________________________
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Re: +/- 5v TTL serial signal to 0/3v for sci port - ramo...@msn.com - May 7 10:02:11 2007
Hello, Recently I have used the IC MAX3232ECPE (from Maxim)for that reason. Hello, > I am trying to interface a serial device (GPS receiver) with the f2812. The device gives the serial signal at +/- 5v as it should but the dsp requires all serial signals to be between 0 and 3.3v . Is there a simple circuit that can be used for this or some type of conversion cable? > >Thanks for any advice! > >Kevin You can post a message or access and search the archives of this group on DSPRelated.com: http://www.dsprelated.com/groups/c28x/1.php _____________________________________
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Re: +/- 5v TTL serial signal to 0/3v for sci port - gopalakrishnan vishal anand - May 7 10:05:25 2007
Hi, You can check out the document, SPRA550.pdf in TI's website. It gives differnt interfacing techniques between TTL/CMOS to DSP pins. Thanks, Vishal. --- k...@drexel.edu wrote: > Hello, > I am trying to interface a serial device (GPS > receiver) with the f2812. The device gives the > serial signal at +/- 5v as it should but the dsp > requires all serial signals to be between 0 and 3.3v > . Is there a simple circuit that can be used for > this or some type of conversion cable? > > Thanks for any advice! > > Kevin > You can post a message or access and search the archives of this group on DSPRelated.com: http://www.dsprelated.com/groups/c28x/1.php _____________________________________
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