Datasheet

Section 20 Ethernet Controller (EtherC)
Rev. 2.00 Aug. 20, 2008 Page 763 of 1198
REJ09B0403-0200
Bit Bit Name
Initial
Value
R/W Description
5 TE 0 R/W Transmission Enable
0: Transmit function is disabled
1: Transmit function is enabled
If this bit is changed from enabling to disabling while a
frame is being transmitted, the transmit function
remains enabled until transmission of the frame is
completed.
4  0 R Reserved
This bit is always read as 0. The initial value should
not be changed.
3 ILB 0 R/W Internal Loop Back Mode
Specifies loopback mode in the EtherC.
0: Normal data transmission/reception is performed.
1: When DM = 1, data loopback is performed inside
the MAC in the EtherC.
2  0 R Reserved
This bit is always read as 0. The initial value should
not be changed.
1 DM 0 R/W Duplex Mode
Specifies the EtherC transfer method.
0: Half-duplex transfer is specified
1: Full-duplex transfer is specified
0 PRM 0 R/W Promiscuous Mode
Setting this bit enables all Ethernet frames to be
received. All Ethernet frames means all receivable
frames, irrespective of differences in or
presence/absence of the destination address,
broadcast address, multicast bit, etc.
0: EtherC performs normal operation
1: EtherC performs promiscuous mode operation
Note: Bits other than TE and RE should be rewritten while both transmission and reception are
disabled (TE = 0 and also RE =0).