Flow control counter register.
MC | MirrorCounter. In full duplex mode the MirrorCounter specifies the number of cycles before re-issuing the Pause control frame. |
PT | PauseTimer. In full-duplex mode the PauseTimer specifies the value that is inserted into the pause timer field of a pause flow control frame. In half duplex mode the PauseTimer specifies the number of backpressure cycles. |