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Hi.thanks for replying. I know the maximum speed . Ltc1407a-1 is 50 MHz and for ltc6912-1 is 10 MHz . Minimum speed is not mentioned . The only thing mentioned is that may have a problem working on maximum speed. When u say spi manual i suppose u mean my spi devices' manuals. I give spi_mosi...
Hi to all .I try for two months to make ad work .I just use my spi controller . My vhdl script is exactly as timing diagrams chapter 9, ug334 . Is there anything that is not metioned in manual that creates problems such as desabling other spi devices..It is not mentioned . i change spi_sck...
Thanks for your past reply . i've also been using the same ucf, which is general for all the devices. I just wanted to check which devices to disable, because they are not mentioned clearly in the manual. Also, if possible, send me the ucf you are using, if it is different from the one you have...
i use spartan 3an and its manual is ug334 .There are a lot of things missing. If u could send me ucf , it would be really helpful . thanks for replying .
Sorry to disturb again...But i can't make it work.Your code is the greatest i have found and i have understood it. i tried to set the gain to amplifier and see it on leds without using the adc but leds go high.Don't i have to disable the other spi devices? Which spi flash prom programming...
Hi kvingle. I was searching google and i just saw your post. What do u mean "you don't need a VHDL program for configuration".
I have been trying for 2 months to configure adc by writing vhdl program.Am i wrong ? How can i use impact without a .bit file?
thanks
Hi , could anyone tell me which configuration mode should i use to program amp and adc. Also,Spartan 3an's user guide (ug334) i can't understand somethig ...page 76 , figure 9-6. At sample point i turn off spi_sck and for many cycles?
Manual says that the maximum sample rate is approximately...
Hi.I am working on my thesis and i have to use amp and adc.I have made my code by reading the manual.But i don't have right results.I suppose that the problem is with spi_sck and ad_conv . I cant understand from the manual how many cycles spi_sck haw to be '0' in sample point.I use 1mhz clock ...
Thank u very much nickb1! what is "amplitude1_buffer(12) = '1'" for? Why do u check that bit?
Something else . how do u check the other bits to see if the value is right? sorry to disturb and thanks...
Hi\. i am working on my thesis and i have to use adc on spartan 3an which is the same with spartan 3e.
could u please explain me why that :
" if(rising_edge(mclk)) then
case state_clock is
when clock_on =>
SPI_SCK <= clk_sample;
when clock_off =>
SPI_SCK <= '0';
end...
Thanks for your help. I have some questions. I have made the driver modules for my two stepper motors. Now i have to program my spartan 3an . What i want is to to take an analog signal (voltage) from pv panel and check my algo which controls the movement of motors . I have googled it but i can t...
HI.
I work for my thesis on a sun tracking algorithm. i use two unipolar stepper motors for moving the solar panel on two axis' . i have a problem with the pulses to move motors . Does anyone know where i can find any vhdl examples ?
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