when i go through data sheet i found tat i can able to send max of 16bits. but i need to send 24bits, is it possible to write 24bits? if i write into 3 segments dac wil consider as three diff data is received. how to set sync low until 24bits are received for spi write.
The SPI controller can send 4-16 bits in one transfer.
But if you drive your slave-select line manually, then you can have the SPI controller perform two 12-bit transfers after each other.