Q
When using serial ports in subordinate mode is it possible to connect DR to SDFS of
same port to initiate data output? There isn't any info on the time DR is
asserted in datasheet specifications?
A
In subordinate mode it is permissible to use DR to drive the SDFS input. The SDFS
would be recognized on the next clock cycle after the DR goes high and the data
output would begin on the next clock.