Intel PCI-X manual Mode Encodings for LED Outputs, Mode Pneumonic State / Event Indicated

			Register Descriptions
Table 13-61. Mode Encodings for LED Outputs1
	Mode	Pneumonic	State / Event Indicated
	0000b	LINK_10/1000	Asserted when either 10 or 1000 Mbps link is
			established and maintained.
	0001b	LINK_100/1000	Asserted when either 100 or 1000 Mbps link is
			established and maintained.
	0010b	LINK_UP	Asserted when any speed link is established and
			maintained.
			Asserted when link is established and packets are
	0011b	ACTIVITY	being transmitted or receive activity that passes
			filtering.
	0100b	LINK/ACTIVITY	Asserted when link is established and when there is
			no transmit or receive activity that passes filtering.
	0101b	LINK_10	Asserted when a 10 Mbps link is established and
			maintained.
	0110b	LINK_100	Asserted when a 100 Mbps link is established and
			maintained.
	0111b	LINK_1000	Asserted when a 1000 Mbps link is established and
			maintained.
	1000b	PCIX_MODE	Asserted when Ethernet controller is in PCI-X mode
			(deasserted in PCI mode).
	1001b	FULL_DUPLEX	Asserted when the link is configured for full duplex
			operation (deasserted in half-duplex).
	1010b	COLLISION	Asserted when a collision is observed.
			Asserted when the Ethernet controller is operating
			in a PCI 66 MHz or a PCI-X 133 MHz configuration
	1011b	BUS_SPEED	(high-speed PCI operation), deasserted for 33 MHz
			PCI and 66 MHz PCI-X (as determined by pins
			sampled at PCI reset).
		BUS_SIZE	Asserted when the Ethernet controller is operating
	1100b	Reserved for the	as a 64-bit PCI or PCI-X device, deasserted for 32-
		82547GI/EI only)	bit configuration.
	1101b	PAUSED	Asserted when the Ethernet controller’s transmitter
			is flow controlled.
			Always high. Assuming no optional inversion
	1110b	VCC/LED_ON	selected, causes output pin high / LED ON for
			typical LED circuit.

1.Not applicable to the 82544GC/EI.

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