SH7713 Datasheet, PDF (682/904 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
6
RE
0
R/W Reception Enable
If a switch is made from receive function enabled (RE
= 1) to disabled (RE = 0) while a frame is being
received, the receive function will be enabled until
reception of the corresponding frame is completed.
0: Receive function is disabled
1: Receive function is enabled
5
TE
0
R/W Transmission Enable
If a switch is made from transmit function enabled
(TE = 1) to disabled (TE = 0) while a frame is being
transmitted, the transmit function will be enabled until
transmission of the corresponding frame is
completed.
0: Transmit function is disabled
1: Transmit function is enabled
4

0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
3
ILB
0
R/W Internal Loop Back Mode
Specifies loopback mode in the EtherC.
0: Normal data transmission/reception is performed.
1: Data loopback is performed inside the MAC in the
EtherC at DM = 1.
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
Rev.1.50 Aug. 30, 2006 Page 642 of 860
REJ09B0288-0150