Tool/software:
Hello,
We are trying to optimise our design which requires 16 DAC channels to have a synchronised output and we are currently evaluating a solution that consists of two DAC80508 connected in Daisy Chain mode.
While we plan to use Boradcast Value in the Register maps to simultaneously update ALL 8 channels, we want to determine if the same is possible for us to do on all 16 channels of two DACs connected in Daisy chain, our queries are,
1) In the data sheet, it seems like all CS pins had to be connected in parallel to a single GPIO? It seems like its an error in the graphics on the data sheet as all CS are terminated at a node however they're not connected.
If the graphics is accurate, and in case if all CS require their dedicated GPIO, how is the CS handled in that case?
2) If we put DAC in write mode and then write a value in both Broadcast Registers of Both DACs respectively, do you think all outputs will update simultaneously on the CS edge? This considers both devices have the CS pins connected in parallel.
3) I think that the transfer speed of SPI will be halved if the CS is common, am I right in my assumption?
