LAN9353 Datasheet, PDF (124/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
Bits
Description
8
Duplex Mode (PHY_DUPLEX)
This bit is used to set the duplex when the Auto-Negotiation Enable
(PHY_AN) bit is disabled.
Type
R/W
Default
Note 10
0: Half Duplex
1: Full Duplex
7
Collision Test Mode (PHY_COL_TEST)
R/W
0b
This bit enables/disables the collision test mode of the PHY. When set, the
collision signal is active during transmission. It is recommended that this fea-
ture be used only in loopback mode.
0: Collision test mode disabled
1: Collision test mode enabled
6:0 RESERVED
RO
-
Note 8: The default value of this bit is determined by the logical OR of the Auto-Negotiation strap (autoneg_strap_1
for PHY A, autoneg_strap_2 for PHY B) and the speed select strap (speed_strap_1 for PHY A,
speed_strap_2 for PHY B). 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 7.0, "Configuration Straps,"
on page 67 for more information. In 100BASE-FX mode, the default value of this bit is a 1.
Note 9: The default is the value of the Auto-Negotiation strap (autoneg_strap_1 for PHY A, autoneg_strap_2 for
PHY B). Refer to Section 7.0, "Configuration Straps," on page 67 for more information. In 100BASE-FX
mode, the default value of this bit is a 0.
Note 10: The default value of this bit is determined by the logical AND of the negation of the Auto-Negotiation strap
(autoneg_strap_1 for PHY A, autoneg_strap_2 for PHY B) and the duplex select strap (duplex_strap_1 for
PHY A, duplex_strap_2 for PHY B). 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 Section 7.0, "Configu-
ration Straps," on page 67 for more information.
In 100BASE-FX mode, the Auto-Negotiation strap is not considered and the default of this bit is the value
of the duplex select strap.
DS00001925A-page 124
 2015 Microchip Technology Inc.