RTL8111B-GR datasheet(9/29 Pages) REALTEK

Part #	RTL8111B-GR

Description	INTEGRATED GIGABIT ETHERNET CONTROLLER FOR PCI EXPRESS??APPLICATIONS

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Manufacturer	REALTEK [Realtek Semiconductor Corp.]

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RTL8111B-GR

Datasheet

Integrated Gigabit Ethernet Controller for PCI Express

4

Track ID: JATR-1076-21

Rev. 1.4

5.

Pin Descriptions

The signal type codes below are used in the following tables:

I:

Input

S/T/S:

Sustained Tri-State

O:

Output

O/D:

Open Drain

T/S:

Tri-State bi-directional input/output pin

5.1. Power Management/Isolation

Table 1.

Power Management/Isolation

Symbol

Type

Pin No

Description

LANWAKEB

O/D

19

Power Management Event: Open drain, active low.

Used to reactivate the PCI Express slot’s main power rails and reference clocks.

ISOLATEB

I

36

Isolate Pin: Active low.

Used to isolate the RTL8111B-GR from the PCI Express bus. The RTL8111B-GR

will not drive its PCI Express outputs (excluding LANWAKEB) and will not

sample its PCI Express input as long as the Isolate pin is asserted.

5.2. PCI Express Interface

Table 2.

PCI Express Interface

Symbol

Type

Pin No

Description

REFCLK_P

I

26

REFCLK_N

I

27

PCI Express Differential Reference Clock Source: 100MHz

± 300ppm.

HSOP

O

29

HSON

O

30

PCI Express Transmit Differential Pair.

HSIP

I

23

HSIN

I

24

PCI Express Receive Differential Pair.

PERSTB

I

20

PCI Express Reset Signal: Active low.

When the PERSTB is asserted at power-on state, the RTL8111B-GR returns

to a pre-defined reset state and is ready for initialization and configuration

after the de-assertion of the PERSTB.

5.3. EEPROM

Table 3.

EEPROM

Symbol

Type

Pin No

Description

EESK

O

48

Serial data clock.

EEDI/AUX

O/I

47

EEDI: Output to serial data input pin of EEPROM.

AUX: Input pin to detect if Aux. Power exists or not on initial power-on.

This pin should be connected to EEPROM. To support wakeup from ACPI

D3cold or APM power-down, this pin must be pulled high to Aux. Power

via a resistor. If this pin is not pulled high to Aux. Power, the

RTL8111B-GR assumes that no Aux. Power exists.

EEDO

I

45

Input from serial data output pin of EEPROM.

EECS

O

44

EECS: EEPROM chip select.

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