Specifications

RX62N Group Ethernet Transmit and Receive Settings

Yes

Set to half-duplex mode

ECMR.DM = 0

Yes

Set to 100 Mbps

ECMR.RTM = 1

Set to 10 Mbps

ECMR.RTM = 0

End

Start

Close function

R_Ether_Close

End

Link partner supports

100 Mbps?

Start reception

Return R_ETHER_OK

Return R_ETHER_ERROR

Link partner supports

full-duplex mode?

Set to full-duplex mode

ECMR.DM = 1

Enable transmit/receive

Disable transmit/receive

Set the duplex mode (DM) bit in the ETHERC mode register

(ECMR) to match the mode supported by the link partner.

Only applicable for RMII

Set the transmission/reception rate

(RTM) bit in the ETHERC mode register

(ECMR) to match the mode supported

by the link partner.

Set the transmit enable (TE) or receive enable (RE) bit in

the ETHERC mode register (ECMR) to 1 to enable transmit/receive.

Set the receive request (RR) bit in the EDMAC receive request

Wait until the link partner is ready. The duration of the wait depends

on the system characteristics of the link partner, so careful evaluation

is necessary when setting the value.

Write 0x00000000 to the ETHERC mode register (ECMR)

to disable transmit/receive operation.

i < 0x00000100?

i = 0

i + 1

Figure 4.22 Ethernet API Processing Sequence of Sample Program (3)

R01AN0629EJ0101 Rev.1.01 Page 41 of 52

Mar 31, 2011