37.7.4 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