Specifications

RX62N Group Ethernet Transmit and Receive Settings
Start
End
Yes
No
RFP0 = 1?
Yes
No
Yes
No
RFP1 = 1?
Set the receive request (RR) bit in the EDMAC receive
request register (EDRRR) to 1 to enable the receive function.
Normal receive processing
Set receive size to 0
Turn off receive loop
Update receive size
Clear RFP
Activate receive descriptor
Update receive descriptor pointer
Update receive data pointer
Receive function enabled?
Enable receive function
Clear the receive size to 0 when the contents of
the receive buffer are the start of the frame.
Turn off the receive loop if the contents of the receive
buffer include the end of the frame.
Add the size of the read data to the receive size.
Clear the receive frame position (RFP).
Set RACT to 1 to activate the receive descriptor.
Update the pointer to the relevant descriptor.
Update the pointer for writing receive data
by the size of the read data.
Figure 4.25 Ethernet API Processing Sequence of Sample Program (6)
R01AN0629EJ0101 Rev.1.01 Page 44 of 52
Mar 31, 2011