RTL8111E-VB-CG Просмотр технического описания (PDF) - Realtek Semiconductor

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RTL8111E-VB-CG

INTEGRATED GIGABIT ETHERNET CONTROLLER FOR PCI EXPRESS APPLICATIONS

Realtek Semiconductor 

RTL8111E

Datasheet

6.2.6. Customizable LED Configuration

The RTL8111E supports customizable LED operation modes via IO register offset 18h~19h. Table 11

describes the different LED actions.

Bit

15:12

11:8

7:4

3:0

Symbol

LEDSEL3

Reserved

LEDSEL1

LEDSEL0

Table 11.

RW

RW

-

RW

RW

LED Select (IO Register Offset 18h~19h)

Description

LED Select for PINLED3

Reserved

LED Select for PINLED1

LED Select for PINLED0

When implementing customized LEDs:

1. Set IO register offset 0x55 bit 6 to 1h to enable the customized LED function.

Note: Before enabling the customized LED function, the RTL8111E MUST disable register protection first

by setting IO register offset 0x50 bit [7:6] to 11h.

2. Configure IO register offset 18h~19h to support your own LED signals. For example, if the value in the

IO offset 0x18 is 0x80C1h (1000000011000001b), the LED actions are:

• LED 0: On only in 10M mode, with no blinking during TX/RX

• LED 1: On only in 1000M mode, with TX/RX blinking

• LED 3: Blinking only during TX/RX

Speed

LED 0

LED 1

Not Defined

LED 3

Link 10M

Bit 0

Bit 4

Bit 8

Bit 12

Table 12. Customized LEDs

LINK

Link 100M

Link 1000M

Bit 1

Bit 2

Bit 5

Bit 6

Bit 9

Bit 10

Bit 13

Bit 14

ACT/Full

-

Bit 3

Bit 7

Bit 11

Bit 15

LED Pin

ACT=0

ACT=1

LINK=0

Floating

All Speed ACT

LINK>0

Selected Speed LINK

Selected Speed LINK+ACT

Note1: ACT means blinking TX and RX. LINK indicates Link 10M/100M/1000M.

Note2: There are four special modes:

Mode A: LED OFF ModeÆ

Mode B: Full Duplex LED Mode Æ

Set all bits to 0

Set LED 0=0, and either LED 1 or LED 3 >0

LED 0=Full Duplex

LED 1=Follow Customized LED rule

Mode C: Separated TX/RX Mode Æ

LED 3=Follow Customized LED rule

Set LED 0=0, LED1=0, LED3=1

LED 0=TX

Mode D: Separated Speed ACT Mode Æ

LED 1=RX

LED 3=LINK

Set LED 0=0, LED1=1, LED3=1

LED 0=10ACT

LED 1=100ACT

LED 3=1000ACT

Integrated Gigabit Ethernet Controller for PCI Express

12

Track ID: JATR-2265-11 Rev. 1.5

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