Datasheet

Section 20 Ethernet Controller (EtherC)
Rev. 2.00 Aug. 20, 2008 Page 776 of 1198
REJ09B0403-0200
20.4 Operation
The overview of the Ethernet controller (EtherC) are shown below. The EtherC transmits and
receives PAUSE frames conforming to the Ethernet/IEEE802.3 frames.
20.4.1 Transmission
In response to a transmit request from the E-DMAC, the EtherC transmitter arranges the transmit
data into a frame and outputs to the RMII. The transmit data that has gone through the RMII is
output onto the lines by the PHY-LSI. Figure 20.2 shows the state transition of the EtherC
transmitter.