SH7764 Datasheet, PDF (791/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 19 Ethernet Controller (EtherC)
19.4 Operation
The following outlines the operations of the Ethernet controller (EtherC).
The Ethernet controller (EtherC) supports flow control functions conforming to IEEE802.3x, and
transmission/reception of PAUSE frames used for the control is possible.
19.4.1 Transmission
The EtherC transmitter assembles the transmit data on the frame and outputs to MII when there is
a transmit request from the E-DMAC. The data transmitted via the MII is transmitted to the lines
by PHY-LSI. Figure 19.2 shows the status change of the EtherC transmitter.
Rev. 1.00 Nov. 22, 2007 Page 735 of 1692
REJ09B0360-0100