Workstation 4 and 4 LX Field Service Guide
4-25
WS4 LX Technical Overview
RTL8110SC 10/100/1000Mbps PCI Ethernet Controller
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.
