Link Power Management register
| HIRD_HW | Host Initiated Resume Duration - HW. This is the HIRD value from the last received LPM token |
| HIRD_SW | Host Initiated Resume Duration - SW. This is the time duration required by the USB device system to come out of LPM initiated suspend after receiving the host initiated LPM resume. |
| DATA_PENDING | As long as this bit is set to one and LPM supported bit is set to one, HW will return a NYET handshake on every LPM token it receives. If LPM supported bit is set to one and this bit is zero, HW will return an ACK handshake on every LPM token it receives. If SW has still data pending and LPM is supported, it must set this bit to 1. |
| RESERVED | Reserved |