39.8.4 Finite State Machine Status

Name: FSMSTATUS
Offset: 0x0D
Reset: 0xXXXX
Property: Read only

Bit 76543210 
  FSMSTATE[6:0] 
Access RRRRRRR 
Reset 0000001 

Bits 6:0 – FSMSTATE[6:0] Fine State Machine Status

These bits indicate the state of the finite state machine of the USB controller.

ValueNameDescription
0x01 OFF (L3) Corresponds to the powered-off, disconnected, and disabled state.
0x02 ON (L0) Corresponds to the Idle and Active states.
0x04 SUSPEND (L2) -
0x08 SLEEP (L1) -
0x10 DNRESUME Down Stream Resume.
0x20 UPRESUME Up Stream Resume.
0x40 RESET USB lines Reset.
Others - Reserved