LAN9312 Datasheet, PDF (247/458 Pages) SMSC Corporation – High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
BITS
DESCRIPTION
7 Collision Test (VPHY_COL_TEST)
This bit enables/disables the collision test mode. When set, the collision
signal to the Host MAC is active during transmission from the Host 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
RO
RO
DEFAULT
0b
0b
-
Note 14.16 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.
SMSC LAN9312
247
DATASHEET
Revision 1.2 (04-08-08)