NH82801HEM S LA5R Intel, NH82801HEM S LA5R Datasheet - Page 122
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NH82801HEM S LA5R
Manufacturer Part Number
NH82801HEM S LA5R
Description
Manufacturer
Intel
Datasheet
1.NH82801HEM_S_LA5R.pdf
(890 pages)
Specifications of NH82801HEM S LA5R
Lead Free Status / RoHS Status
Compliant
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5.3.5
5.3.6
122
Configurable LEDs
The LAN Controller supports 3 controllable and configurable LEDs that are driven from
the LAN Connect Device. Each of the three LED outputs can be individually configured
to select the particular event, state, or activity, which will be indicated on that output.
In addition, each LED can be individually configured for output polarity as well as for
blinking versus non-blinking (steady-state) indication.
The configuration for LED outputs is specified via the LEDCTL register. Furthermore, the
hardware-default configuration for all the LED outputs, can be specified via NVM fields,
thereby supporting LED displays configurable to a particular OEM preference.
Each of the 3 LEDs may be configured to use one of a variety of sources for output
indication. The MODE bits control the LED source:
The IVRT bits allow the LED source to be inverted before being output or observed by
the blink-control logic. LED outputs are assumed to normally be connected to the
negative side (cathode) of an external LED.
The BLINK bits control whether the LED should be blinked while the LED source is
asserted, and the blinking frequency (either 200 ms on and 200 ms off or 83 ms on and
83 ms off). The blink control may be especially useful for ensuring that certain events,
such as ACTIVITY indication, cause LED transitions, which are sufficiently visible to a
human eye. The same blinking rate is shared by all LEDs.
Intel
Intel
partially shuts down the Intel
power saving mode, if enabled, is entered upon link loss due to LAN cable
disconnection in S0. The PLC device will automatically resume power and reestablish its
connection when link pulses from a link partner are detected in S0.
The Intel
for the PLC transitioning into Intel ACBS mode and the ICH8M Gigabit LAN Controller
HW is responsible for detecting the presence of a link partner which indicates that the
Intel ACBS mode should be terminated.
• LINK_100/1000 is asserted when link is established at either 100 or 1000 Mbps.
• LINK_10/1000 is asserted when link is established at either 10 or 1000 Mbps.
• LINK_UP is asserted when any speed link is established and maintained.
• ACTIVITY is asserted when link is established and packets are being transmitted or
• LINK/ACTIVITY is asserted when link is established AND there is NO transmit or
• LINK_10 is asserted when a 10 Mbps link is established and maintained.
• LINK_100 is asserted when a 100 Mbps link is established and maintained.
• LINK_1000 is asserted when a 1000 Mbps link is established and maintained.
• FULL_DUPLEX is asserted when the link is configured for full duplex operation.
• COLLISION is asserted when a collision is observed.
• PAUSED is asserted when the device's transmitter is flow controlled.
• LED_ON is always asserted; LED_OFF is always de-asserted.
received.
receive activity
®
Auto Connect Battery Saver (ACBS) is a power saving feature that completely or
®
®
Auto Connect Battery Saver (Mobile Only)
ACBS feature is controlled by the LAN Driver. The SW driver is responsible
®
82566 Gigabit Platform LAN Connect (PLC) device. This
Intel
®
Functional Description
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