Some Kinetis pin functions have a _b suffix. There's the RESET_b pin, but also others such as UART0_CTS_b.
I've tried searching datasheet and user manual but can't seem to find out what this indicates. Of course there are 100's of matches on _b so I may have missed it.
_b means that it is negative logic (eg. RESET_b is reset with a '0', or UART3_RTS_b asserts to '0'). Others will "tend" to be positive logic (asserts to '1' or react to '1' at input).
_b means that it is negative logic (eg. RESET_b is reset with a '0', or UART3_RTS_b asserts to '0'). Others will "tend" to be positive logic (asserts to '1' or react to '1' at input).
Ah, of course, silly me! What threw me was that some ADC signals also have a 'b' suffix. Now clearly that means the alternate location since there are ADC signals with 'a' suffix also.
Yes, the ADCs have a mux which allows their channel input to be set to either Mux a or Mux b position (although some packages don't support both and in this case there is neither _a nor _b).
