Datasheet

Section 21 Ethernet Controller Direct Memory Access Controller (E-DMAC)
Rev. 2.00 Aug. 20, 2008 Page 826 of 1198
REJ09B0403-0200
This LSI + memory
Transmission flowchart
E-DMAC EtherC EthernetTransmit FIFO
EtherC/E-DMAC
initialization
Descriptor and
transmit
buffer setting
Transmit directive
Descriptor read
Descriptor write-back
Descriptor write-back
Transmission
completed
Descriptor read
Transmit data transfer
Frame transmission
Transmit data transfer
Figure 21.4 Sample Transmission Flowchart