SH7619_09 Datasheet, PDF (361/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 12 Ethernet Controller Direct Memory Access Controller (E-DMAC)
8. If counter i reaches or exceeds n, the maximum specified time has elapsed and we can judge
that the E-DMAC has stopped due to a transmit underflow. Initialize the EtherC and E-DMAC
modules by setting the software-reset bit SWR in the E-DMAC mode register (EDMR). After
re-making initial settings for the Ethernet module, initialize the transmit/receive descriptors
and transmit/receive buffers.
Rev. 6.00 Jul. 15, 2009 Page 321 of 816
REJ09B0237-0600