pub type R = R<CTRLB_SPEC>;
Register CTRLB reader
CTRLB
struct R { /* private fields */ }
Bit 0 - Detach
Bit 1 - Upstream Resume
Bits 2:3 - Speed Configuration
Bit 4 - No Reply
Bit 5 - Test mode J
Bit 6 - Test mode K
Bit 7 - Test packet mode
Bit 8 - Specific Operational Mode
Bit 9 - Global NAK
Bits 10:11 - Link Power Management Handshake