RTL8111B-GR

Datasheet

Integrated Gigabit Ethernet Controller for PCI Express

14

Track ID: JATR-1076-21

Rev. 1.4

Link Wakeup occurs only when the following conditions are met:

• The LinkUp bit (CONFIG3#4) is set to 1, the PMEn bit (CONFIG1#0) is set to 1, and the

corresponding wake-up method (message, beacon, or LANWAKEB) can be asserted in the current

power state.

Magic Packet Wakeup occurs only when the following conditions are met:

• The destination address of the received Magic Packet is acceptable to the RTL8111B-GR, e.g., a

broadcast, multicast, or unicast packet addressed to the current RTL8111B-GR adapter.

• The received Magic Packet does not contain a CRC error.

• The Magic bit (CONFIG3#5) is set to 1, the PMEn bit (CONFIG1#0) is set to 1, and the

corresponding wake-up method (message, beacon, or LANWAKEB) can be asserted in the current

power state.

• The Magic Packet pattern matches, i.e. 6 * FFh + MISC (can be none) + 16 * DID (Destination ID) in

any part of a valid Ethernet packet.

A Wakeup Frame event occurs only when the following conditions are met:

• The destination address of the received Wakeup Frame is acceptable to the RTL8111B-GR, e.g., a

broadcast, multicast, or unicast address to the current RTL8111B-GR adapter.

• The received Wakeup Frame does not contain a CRC error.

• The PMEn bit (CONFIG1#0) is set to 1.

Frame pattern given by the local machine’s OS. Or, the RTL8111B-GR is configured to allow direct

packet wakeup, e.g., a broadcast, multicast, or unicast network packet.

Note: 16-bit CRC: The RTL8111B-GR supports two normal wakeup frames (covering 64 mask bytes

from offset 0 to 63 of any incoming network packet) and three long wakeup frames (covering 128

mask bytes from offset 0 to 127 of any incoming network packet).

The corresponding wake-up method (message, beacon, or LANWAKEB) is asserted only when the

following conditions are met:

• The PMEn bit (bit0, CONFIG1) is set to 1.

• The PME_En bit (bit8, PMCSR) in PCI Configuration Space is set to 1.

• The RTL8111B-GR may assert the corresponding wake-up method (message, beacon, or

LANWAKEB) in the current power state or in isolation state, depending on the PME_Support

(bit15-11) setting of the PMC register in PCI Configuration Space.

• A Magic Packet, LinkUp, or Wakeup Frame has been received.

• Writing a 1 to the PME_Status (bit15) of the PMCSR register in the PCI Configuration Space clears

this bit and causes the RTL8111B-GR to stop asserting the corresponding wake-up method (message,

beacon, or LANWAKEB) (if enabled).