| Byte | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|
| M_stat | BOD active | polarity of DCC_in |
BOD scan required |
drivers are coupled |
set during serial memory access | if derived internally |
1 second heartbeat |
DCC signal present |
| DRV_st | enable driver |
polarity, 1 = normal |
coupled in a matrix |
shutdown for OC |
auto-reverse attempted |
auto-reversing driver | ||
| EP_ctl | update drivers |
local group messages |
serial network messages |
DCC message decoded |
BOD data is ready | |||
| DCC_state | ||||||||
| SYS_RES | ||||||||