Duplex mode (phy_duplex), Datasheet – SMSC LAN9311i User Manual
Page 290
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08)
290
SMSC LAN9311/LAN9311i
DATASHEET
Note 14.49
The default value of this bit is determined by the logical OR of the Auto-Negotiation strap
(autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY) and the speed select
strap (speed_strap_1 for Port 1 PHY, speed_strap_2 for Port 2 PHY). Essentially, if the
Auto-Negotiation strap is set, the default value is 1, otherwise the default is determined by
the value of the speed select strap. Refer to
Section 4.2.4, "Configuration Straps," on
Note 14.50
The default value of this bit is determined by the value of the Auto-Negotiation strap
(autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY). Refer to
"Configuration Straps," on page 40
for more information.
Note 14.51
The default value of this bit is determined by the logical AND of the negation of the Auto-
Negotiation strap (autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY) and
the duplex select strap (duplex_strap_1 for Port 1 PHY, duplex_strap_2 for Port 2 PHY).
Essentially, if the Auto-Negotiation strap is set, the default value is 0, otherwise the default
is determined by the value of the duplex select strap. Refer to
9
Restart Auto-Negotiation (PHY_RST_AN)
When set, this bit restarts the Auto-Negotiation process.
0: Normal operation
1: Auto-Negotiation restarted
R/W
SC
0b
8
Duplex Mode (PHY_DUPLEX)
This bit is used to set the duplex when the
bit
is disabled.
0: Half Duplex
1: Full Duplex
R/W
7
Collision Test Mode (PHY_COL_TEST)
This bit enables/disables the collision test mode of the Port x PHY. When
set, the collision signal is active during transmission. It is recommended that
this feature be used only in loopback mode.
0: Collision test mode disabled
1: Collision test mode enabled
R/W
0b
6:0
RESERVED
RO
-
BITS
DESCRIPTION
TYPE
DEFAULT