EP82562ET Datasheet, PDF (20/40 Pages) Intel Corporation – 10/100 Mbps Platform LAN Connect (PLC)

82562ET — Networking Silicon
4.6
4.6.1
4.6.2
LAN Connect Interface
The 82562ET supports the LAN connect interface as specified in the LAN Connect Interface
Specification. The LAN Connect is the I/O Control Hub 2 (ICH2) interface to the 82562ET. The 8-
pin interface incorporates all MII and MII management functionality and includes the reset
functionality as well.
LAN Connect Clock
The 82562ET drives a 50 MHz or 5 MHz clock to the MAC depending on the selected technology
(100BASE-TX or 10BASE-T, respectively). The 82562ET does not stop the LAN Connect clock
for any reason. During reduced power mode, the 82562ET drives a 5 MHz clock.
LAN Connect Reset
To determine the type of signal on the PLC Reset/Synchronization pin, the 82562ET filters out
pulses that are less than 200 nanoseconds. To reset the 82562ET, the pulse should be longer than
500 µseconds.
4.7
LED Functionality
Table 5. LED Functionality
LED Driver
ACTLED#
SPDLED#
LILED#
Function
Activity
Speed
Link valid
Description
The driver blinks at a rate related to the utilization. The blinking occurs during
transmission or reception of a frame.
The driver is low for 100BASE-TX operation and high for 10BASE-T mode.
The driver is low when a valid link is present.
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Datasheet