LAN9303MI-AKZE Datasheet, PDF (183/386 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
8 Duplex Mode (VPHY_DUPLEX)
This bit is used to set the duplex when the Auto-Negotiation (VPHY_AN) bit
is disabled.
0: Half Duplex
1: Full Duplex
7 Collision Test (VPHY_COL_TEST)
This bit enables/disables the collision test mode. When set, the collision
signal to the external MAC is active during transmission from the external
MAC.
Note: It is recommended that this bit be used only when in loopback
mode.
0: Collision test mode disabled
1: Collision test mode enabled
6 Speed Select MSB (VPHY_SPEED_SEL_MSB)
This bit is not used by the Virtual PHY and has no effect. The value returned
is always 0.
5:0 RESERVED
TYPE
R/W
R/W
RO
RO
DEFAULT
0b
0b
0b
-
Note 13.18 The reserved bits 31-16 are used to pad the register to 32-bits so that each register is on
a DWORD boundary. When accessed serially (through the MII management protocol), the
register is 16-bits wide.
Note 13.19 The isolation does not apply to the MII management pins (MDIO).
SMSC LAN9303M/LAN9303Mi
183
DATASHEET
Revision 1.5 (07-08-11)