Other Parts Discussed in Thread: ADS1248
Request you to help us in the following queries:
Firstly thank you very much for the support as we could able to program the ic and get data from a single channel(AIN0,AIN1 sensor connected).
question1:I AM PROGRAMMING THE IC from FPGA.
configuration:
1.Continous conversion mode
2.800 sps
3.PGA 32 GAIN
4.LOW LATENCY FILTER
5.Delay ...>11*tmod
For acquiring the single channel data i am using following flow:
case(1):
1.write the data to configuration registers. I am using first five registers. while writing to registers sart/sync is high
2.making start/sync pin low ,waiting for 24 t clk cycles
3..start/sync high, waiting for 28 t clk cycles
4.start/sync low, checking for DRDY to be low
6.data acquisition.
7.going back to 1.
case(2):
Now i am changing the mux register to 23(AIN2,AIN3 sensor connected)only sending this value i mean reading only 2 channel and following from 1 to7 steps as mentioned above.
but drdy is not becoming low.
in case 1 no problem.but in case 2 i could not able to read the data as drdy not becoming low. request u to help us...