In ADIS16228 we are trying to read the data in real time mode with interrupt of DIO1 But we couldn't get exact samples per cycles
eg : sampling frequency is 20.480Ksps/495(input frequency)= approx 41 samples per cycle
Note : In manual mode we are getting 41 samples per cycle for above condition
a) For an interrupt whether the sensor will 512 samples or 1 samples per interrupt?
b) whether the sampling frequency can be changed?
c) what is the SPI clk frequency to read the data at 20.480Ksps?
Thank you for your post. I hope that these insights are helpful for you.
a) For an interrupt whether the sensor will 512 samples or 1 samples per interrupt?
NEVADAMARK: When operating in real-time mode, DIO1 will pulse, every time the X_BUF register has a new value. therefore, you will want your ISR (interrupt service routine) to read X_BUF, then wait for the next DIO1 pulse.
b) whether the sampling frequency can be changed?
NEVADAMARK: The only available control is through the decimation register.
c) what is the SPI clk frequency to read the data at 20.480Ksps?
NEVADAMARK: We recommend using 2.25MHz SCLK and 18us for the stall time settings.
Thank you for your post. I hope that these insights are helpful for you.
a) For an interrupt whether the sensor will 512 samples or 1 samples per interrupt?
NEVADAMARK: When operating in real-time mode, DIO1 will pulse, every time the X_BUF register has a new value. therefore, you will want your ISR (interrupt service routine) to read X_BUF, then wait for the next DIO1 pulse.
b) whether the sampling frequency can be changed?
NEVADAMARK: The only available control is through the decimation register.
c) what is the SPI clk frequency to read the data at 20.480Ksps?
NEVADAMARK: We recommend using 2.25MHz SCLK and 18us for the stall time settings.
