SH7710 Datasheet, PDF (689/996 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 18 Ethernet Controller (EtherC)
Initial
Bit
Bit Name Value
R/W Description
2
ELB
0
R/W External Loop Back Mode
This bit value is output directly to this LSI’s general-
purpose external output pin (EXOUT). This bit is
used for loopback mode directives, etc., in the PHY-
LSI, using the EXOUT pin. In order for PHY-LSI
loopback to be implemented using this function, the
PHY-LSI must have a pin corresponding to the
EXOUT pin.
0: Low-level output from the EXOUT pin
1: High-level output from the EXOUT pin
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 or
enabled/disabled status (destination address,
broadcast address, multicast bit, etc.).
0: EtherC performs normal operation
1: EtherC performs promiscuous mode operation
Rev. 2.00 Dec. 07, 2005 Page 647 of 950
REJ09B0079-0200