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RTL8153-CG

INTEGRATED 10/100/1000M ETHERNET CONTROLLER FOR USB APPLICATIONS

Realtek Semiconductor 

RTL8153

Datasheet

Magic Packet Wake-Up occurs only when the following conditions are met:

• The destination address of the received Magic Packet is acceptable to the RTL8153, e.g., a broadcast,

multicast, or unicast packet addressed to the current RTL8153 adapter.

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

• 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 Wake-Up Frame event occurs only when the following conditions are met:

• The destination address of the received Wake-Up Frame is acceptable to the RTL8153, e.g., a

broadcast, multicast, or unicast address to the current RTL8153 adapter.

• The received Wake-Up Frame does not contain a CRC error.

• The 16-bit CRC of the received Wake-Up Frame matches the 16-bit CRC of the sample Wake-Up

Frame pattern given by the local machine’s OS. Or, the RTL8153 is configured to allow direct packet

wake-up, e.g., a broadcast, multicast, or unicast network packet.

Note: 16-bit CRC: The RTL8153 supports 16-set 16-bit CRC wake-up frames (covering 128 mask bytes

from offset 0 to 127 of any incoming network packet). CRC16 polynomial=x16+x12+x5+1.

6.7. Link Power Management (LPM)

The RTL8153 supports Link Power Management (LPM). It provides an efficient way to manage bus and

system power via hosts and hubs. It implements a power sleep state that reduces power consumption by

providing faster suspend and resume times. The four power management states for USB are L0 (On), L1

(Sleep), L2 (Suspend) and L3 (Off). To reduce power consumption when the system is in Low Power

State, some of the circuits are disabled.

Refer to http://www.usb.org/developers/docs/.

6.8. Protocol Offload

Protocol offload is a task offload supported by Microsoft Windows 7. It maintains a network presence for

a sleeping higher power host. Protocol offload prevents spurious wake-up and further reduces power

consumption. It maintains connectivity while hosts are asleep, including receiving requests from other

nodes on the network, ignoring packets, generating packets while in the sleep state (e.g., the Ethernet

Controller will generate ARP responses if the same MAC and IPv4 address are provided in the

configuration data), and intelligently waking up host systems. The RTL8153 supports the ECMA

(European Computer Manufacturers Association) specification including proxy configuration and

management, IPv4 ARP, IPv6 NDP, and wake-up packets. The RTL8153 also supports optional ECMA

items such as QoS tagged packets and duplicate address detection.

Integrated 10/100/1000M Ethernet Controller for USB Applications

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Track ID: JATR-8275-15 Rev. 1.1

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