lan9311 Standard Microsystems Corp., lan9311 Datasheet - Page 291

• Manufacturer Part Number: lan9311
• Description: Lan9311/lan9311i Two Port 10/100 Managed Ethernet Switch With 16-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
BITS
6:0
9
8
7
Restart Auto-Negotiation (PHY_RST_AN)
When set, this bit restarts the Auto-Negotiation process.
0: Normal operation
1: Auto-Negotiation restarted
Duplex Mode (PHY_DUPLEX)
This bit is used to set the duplex when the
is disabled.
0: Half Duplex
1: Full Duplex
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
RESERVED
Note 14.49 The default value of this bit is determined by the logical OR of the Auto-Negotiation strap
Note 14.50 The default value of this bit is determined by the value of the Auto-Negotiation strap
Note 14.51 The default value of this bit is determined by the logical AND of the negation of the Auto-
(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
page 40
(autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY). Refer to
"Configuration Straps," on page 40
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
Straps," on page 40
for more information.
DESCRIPTION
for more information.
DATASHEET
Auto-Negotiation (PHY_AN)
291
for more information.
Section 4.2.4, "Configuration Straps," on
bit
Section 4.2.4, "Configuration
TYPE
R/W
R/W
R/W
RO
SC
Revision 1.2 (04-08-08)
Section 4.2.4,
Note 14.51
DEFAULT
0b
0b
-