Mode 0XXX DCC group 1000 PWM motor 1001 PWM lights
DRV_st
enable driver
polarity, 1 = normal
reserved
reserved
coupled
shutdown for OC
auto-reverse attempted
auto-reversing driver
Coupled means this driver and at least one other driver are part of a group (must reverse together)
Note 1: Either rail A or rail B from the command station may be used as input with no change to this setting.
The phase of the incoming DCC is determined by the DCC state machine during the end of each preamble.
"In phase" means each bit begins with a low-to-high transition on the A rail.