RTL8139C Ver la hoja de datos (PDF) - Realtek Semiconductor

Número de pieza

componentes Descripción

Lista de partido

RTL8139C

REALTEK 3.3V SINGLE CHIP FAST ETHERNET CONTROLLER WITH POWER MANAGEMENT

Realtek Semiconductor 

RTL8139C(L)

5

R/W

Magic

Magic Packet: This bit is valid when the PWEn bit of CONFIG1

register is set. The RTL8139C(L) will assert the PMEB signal to

wakeup the operating system when the Magic Packet is received.

Once the RTL8139C(L) has been enabled for Magic Packet wakeup

and has been put into adequate state, it scans all incoming packets

addressed to the node for a specific data sequence, which indicates to

the controller that this is a Magic Packet frame. A Magic Packet frame

must also meet the basic requirements: Destination address + Source

address + data + CRC

The destination address may be the node ID of the receiving station or

a multicast address, which includes the broadcast address.

The specific sequence consists of 16 duplications of 6 byte ID registers,

with no breaks or interrupts. This sequence can be located anywhere

within the packet, but must be preceded by a synchronization stream, 6

bytes of FFh. The device will also accept a multicast address, as long as the

16 duplications of the IEEE address match the address of the ID registers.

If the Node ID is 11h 22h 33h 44h 55h 66h, then the magic frame’s

format is like the following:

Destination address + source address + MISC + FF FF FF FF FF FF +

MISC + 11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66 +

11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33

44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66

+ 11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66 + 11 22 33

44 55 66 + 11 22 33 44 55 66 + 11 22 33 44 55 66 + MISC + CRC

4

R/W

LinkUp

Link Up: This bit is valid when the PWEn bit of CONFIG1 register is

set. The RTL8139C(L), in adequate power state, will assert the PMEB

signal to wakeup the operating system when the cable connection is

re-established.

3

R

CardB_En

Card Bus Enable: Set to 1 to enable CardBus related registers and

functions. Set to 0 to disable CardBus related registers and functions.

2

R

CLKRUN_En CLKRUN Enable:

Set to 1 to enable CLKRUN.

Set to 0 to disable CLKRUN.

1

R

FuncRegEn Functions Registers Enable (CardBus only): Set to 1 to enable the 4

Function Registers (Function Event Register, Function Event Mask

Register, Function Present State Register, and Function Force Event

Register) for CardBus application.

Set to 0 to disable the 4 Function Registers for CardBus application.

0

R

FBtBEn

Fast Back to Back Enable: Set to 1 to enable Fast Back to Back.

2002/01/10

23

Rev.1.4

Share Link: