i want to interface two DDS-AD9833A with Arduino , but it is having only one set of SDA/SCL.
with single board it is working good. now i want to interface two DDS-AD9833A boards.
now i want to use TCA9548A, to interface two AD9833 for two channel.
when i connect the first AD9833A with SDA0/SCL0....i cant get the wavesignal from it, meanwhile it is showing 0 values.
please help me how to interface two AD9833A with TCA9548.
thanks in advance
INTERFACING TO MICROPROCESSORS
The AD9833 has a standard serial interface that allows the part to
interface directly with several microprocessors. The device uses
an external serial clock to write the data or control information
into the device. The serial clock can have a frequency of 40 MHz
maximum. The serial clock can be continuous, or it can idle high
or low between write operations. When data or control information is written to the AD9833, FSYNC is taken low and is held
low until the 16 bits of data are written into the AD9833. The
FSYNC signal frames the 16 bits of information that are loaded
into the AD9833.
Like @ruilviana says, AD9833 uses SPI, not I2C interface. If you have free Arduino pins, it may be easiest to simply manage two AD9833 boards with different pins - for example, one with hardware SPI and the other with software SPI.
That is NOT an I2C device. If you are using the library mentioned in reply #4, then your code will define which 3 pins you use to talk to the ad9833. You can have multiple instances using different pins...