f2000 with Ethernet controller

Hasan Mustafa

hi all,

is there is someone has worked before connected f2812 to an Ethernet controller like the microchip ones, j60 series, while both are 3.3v,

is the connection direct, and no need for pull-up resistors, am i right, or we need ones,

also, the vcc and gnd, its two different sources, its no problem,,, am i right,,,,,,

sorry but im newbie in DSP world, kindly confirm, that the only connection i need is the IN/OUT lines and the CS and CLK, so only for lines, directly connected without pull-up resistors

thanks

hasan

over 16 years ago

0 Arefeen over 16 years ago

Genius 5170 points

I am not sure what you meant by "if the connection is direct" ... there are mainly two ways one can have ethernet capablity using 2812 ... you can use external memory interface or you can use SPI based ethernet controller. You can also check out http://www.windmill-innovations.nl/en/bf3net/f2812-networking-kit/f2812-networking-kit.html as reference. There are most likely other sources offering similar solutions.

0 Hasan Mustafa over 16 years ago in reply to Arefeen

Intellectual 260 points

thanks Mohammed for the answer,

the picture is like this, i have Ethernet Controller and i have DSPf2812, i want to connect them with SPI, shall i connect the threee lines, I/p +O/p plus click, directly or i will need to use a pull-up resistors. in the line,

i hope i explained myself more clear this time,

thanks, regards

Hasan

0 Arefeen over 16 years ago in reply to Hasan Mustafa

Genius 5170 points

Well SPI user manual is the best source to know all the details of SPI module (SPRU059 ? ) and connection. You can also checkout the example SPI project which comes with header file installation. Good luck.

0 Hasan Mustafa over 16 years ago in reply to Arefeen

Intellectual 260 points

i already did that, but i have found some modules need a pull-up and some not,,,and i was wondering if some1 already worked on that before, and know for sure, about it,,,,,,and i suppose no need for resistors, and i was looking for confirmation, just to be sure 100%,

and i didnt find that headers in the file installations, you mean like examples, and source codes.... where exactly, i have found some, but not for 2812,,,,,

thank you,

0 ChrisClearman over 16 years ago in reply to Hasan Mustafa

TI__Guru** 119680 points

header files and examples are here

http://focus.ti.com/docs/toolsw/folders/print/sprc097.html

install and then look

C:\tidcs\c28\dsp281x\v120

There are two SPI examples.

Sorry - can't help with the other questions.

0 Hasan Mustafa over 16 years ago in reply to ChrisClearman

Intellectual 260 points

hi chris,

thanks bunch,,,,, really appreciated, yeah i have seen it, but i only can compile the 3.1 projects, i dont know why cc4.1 not working well, i already submitted another note regarding this issue, but im still waiting for a reasonable reply,,,, http://e2e.ti.com/support/development_tools/f/81/p/33945/118721.aspx#118721

thanks again, and looks like i will risk by 10% to connect both directly, i mean Ethernet and DSP,

thanks again, enjoy the weekend,

Hasan

0 Hasan Mustafa over 16 years ago in reply to Hasan Mustafa

Intellectual 260 points

hey all,

i have received a confirmation, that sits okay,only i need to take of "power up the DSP first and power down it last for the sake of the safety!"

thanks all,

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f2000 with Ethernet controller