it has been a long time since i last did ask a question, now that i a lot of the synthesizer stuff running, not yet into modular, probably never will be but anyhow:
I did see that the parallel to seriell ICs 74HC165 and the respective 74HC595 do use the same SPI lines of the atmel chip, am I right?
I got curious since I am starting to built some hardware around those chips as well, and I was curious to simply use the SPI hardware module insetad of slow software bitbanging.
I just have those two ICs hooked up together but I think the 595 and the 165 do have different behaviour in their (mutabel calles it) IO_ENABLE, I will call it CS for chipselect.
the 595 the IO_ENABLE needs to be lowso that the data is clocked thrugh
the 165 needs to be high in order to shift the data out
So question is, am I doing something wrong, can some signals be inversed, could I simply use an inverter or 2 different CS signals for each device, or did mutable do something i dont see right now to achieve the parallel behaviour.
OR of course pretty straight forward: dont use those two ICs in parallel but one after another.
Thanks for reading my sometimes confusing thoughts.
And thanks for advice.