LAN9303MI-AKZE Datasheet, PDF (209/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
BITS
DESCRIPTION
9 Restart Auto-Negotiation (PHY_RST_AN)
When set, this bit restarts the Auto-Negotiation process.
0: Normal operation
1: Auto-Negotiation restarted
8 Duplex Mode (PHY_DUPLEX)
This bit is used to set the duplex when the Auto-Negotiation (PHY_AN) bit
is disabled.
0: Half Duplex
1: Full Duplex
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
6:0 RESERVED
TYPE
R/W
SC
R/W
R/W
RO
DEFAULT
0b
Note 13.65
0b
-
Note 13.63 For Port 1 operating in an external mode (MII PHY, RMII PHY, or MII MAC mode), the
default value of this bit is 1 and is independent of any strap. For Port 1 operating in Internal
PHY mode and for all operating modes of Port 2, 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 page 52 for more information.
Note 13.64 For Port 1 operating in an external mode (MII PHY, RMII PHY, or MII MAC mode), the
default value of this bit is 0 and is independent of any strap. For Port 1 operating in Internal
PHY mode and for all operating modes of Port 2, the default value of this bit is the value
of the Auto-Negotiation strap (autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port
2 PHY). Refer to Section 4.2.4, "Configuration Straps," on page 52 for more information.
Note 13.65 For Port 1 operating in an external mode (MII PHY, RMII PHY, or MII MAC mode), the
default value of this bit is 0 and is independent of any strap. For Port 1 operating in Internal
PHY mode and for all operating modes of Port 2, 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 Section 4.2.4, "Configuration Straps," on page 52 for more
information.
SMSC LAN9303M/LAN9303Mi
209
DATASHEET
Revision 1.5 (07-08-11)