Rtl8110Sc 10/100/1000Mbps Pci Ethernet Controller; Pci Bus Interface; Link, Speed And Activity Led Control; Eeprom Interface - Micros Systems Workstation 4 LX Service Manual

Table of Contents

RTL8110SC 10/100/1000Mbps PCI Ethernet Controller

General Description REF: ABRD86 - Sheets 14 and 15

The RTL8110SC Gigabit Ethernet Controller combines a three-speed IEE 802.3

compliant Media Access Controller (MAC) with a three-speed Ethernet transceiver,

32-bit PCI controller, and embedded memory.

The device supports PCI v2.2 and Mini-PCI v1.0 bus interfaces for host

communications with power management, and is compliant with the IEEE 802.3

specification for 10/100Mbps Ethernet and IEEE 802.3ab specification for 1000Mbps

Ethernet. Functions such as cross over detection and auto-correction, polarity

correction, adaptive equalization, cross-talk cancellation, timing recovery, and error

correction are implemented to provide reliable Ethernet communications at high

speeds. The RTL8110SC supports remote wake-up, including AMD Magic Packet,

Re-LinkOK, and Microsoft Wake-up frames in both the ACPI and APM

environments.

PCI Bus Interface

The RTL8110SC implements the PCI bus interface as defined in PCI Local Bus

Specification Rev 2.3. The RTL8110SC act as a PCI target (slave mode) when internal

registers are accessed, and acts as a bus master when host memory is accessed for

descriptor or packet data transfer. The PCI Bus supports 32-bit and 66MHz speeds as

implemented on the Workstation 4 LX System Board.

Link, Speed and Activity LED Control

The RTL8110SC supports up to four LEDs in four operational modes. The LX System

Board Ethernet connector includes a pair of two-color LEDs integrated into the

Ethernet connector, CN9.

LED #1 (on the left side of the connector) serves as a link, speed, and activity

indicator at 1000Mbps and 100Mbps speeds.

•

When LED #1 is Orange, the link speed is 1000Mbps or 1Gbit. When the

LED blinks, this indicates transmit or receive activity on the link.

•

When LED #1 is Green, this indicates the link speed is 100Mbps. When the

LED blinks, this indicates transmit or receive activity on the link.

LED #2 (on the right side of the connector) serves as a link, speed, and activity

monitor for a 10Mbps connection.

•

When LED #2 is Green and LED #1 is off, the link speed is 10Mbps. When

the LED blinks, this indicates transmit or receive activity on the link.

EEPROM Interface

The RTL8110SC requires an external EEPROM be attached. The LX System board

uses U19, a 1Kbit serial EEPROM. The EEPROM interface provides the ability to

read and write data to an external EEPROM device.

The EEPROM stores the PCI configuration and IO space values of the controller and

these values are auto-loaded into the controller at each power-up.

Workstation 4 and 4 LX Field Service Guide