Rtl8110Sc Ethernet Controller; General Description; Pci Bus Interface; Link, Speed And Activity Led Control - Micros Systems Workstation 5 Service Manual

Workstation 5 System Board Technical Descriptions

RTL8110SC Ethernet Controller

RTL8110SC Ethernet Controller

General Description (REF: ABRD88 - Sheets 8, 14 and 15)
The RTL8110SC Gigabit Ethernet Controller combines a three-speed IEEE
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 802.3a 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 acts 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
operates at 66Mhz.

Link, Speed and Activity LED Control

The RTL8110SC supports up to four LEDs in four operational modes. The
WS5 System Board Ethernet connector includes a pair of two-color LEDs
integrated into the Ethernet connector, CN8.
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.
2-32 Workstation 5 Field Service Guide