SMSC flexpwr lan8710 Manual De Usuario

MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR

® 

 Technology in a Small Footprint

Revision 1.0 (04-15-09)

10

SMSC LAN8710/LAN8710i

The LAN8710/LAN8710i is compliant with IEEE 802.3-2005 standards (MII Pins tolerant to 3.6V) and
supports both IEEE 802.3-2005 compliant and vendor-specific register functions. It contains a full-
duplex 10-BASE-T/100BASE-TX transceiver and supports 10-Mbps (10BASE-T) operation, and 100-
Mbps (100BASE-TX) operation. The LAN8710/LAN8710i can be configured to operate on a single 3.3V
supply utilizing an integrated 3.3V to 1.2V linear regulator. An option is available to disable the linear
regulator to optimize system designs that have a 1.2V power supply available. This allows for the use
of a high efficiency external regulator for lower system power dissipation.

The LAN8710 will begin normal operation following reset, and no register access is required. The initial
configuration may be selected with configuration pins as described in 

. In addition,

register-selectable configuration options may be used to further define the functionality of the
transceiver. For example, the device can be set to 10BASE-T only. The LAN8710 supports both IEEE
802.3-2005 compliant and vendor-specific register functions.

MODE

MII or
RMII

LED Status

MDI