Service manual

8258I N/B Maintenance

1.2.9 LAN

The Realtek RTL8100C(L) is a highly integrated, cost-effective single-chip fast Ethernet controller that provides

32-bit performance, PCI bus master capability and full compliance with IEEE 802.3u 100Base-T specifications

and IEEE 802.3x full duplex flow control. It also supports the Advanced Configuration Power management

Interface (ACPI), PCI power management for modern operating systems that are capable of Operating System

Directed Power Management (OSPM) to achieve the most efficient power management possible. The RTL8100C

(L) does not support CardBus mode as the RTL8139C does. In addition to the ACPI feature, the RTL8100C(L)

also supports remote wake-up (including AMD Magic Packet, LinkChg, and Microsoft® wake-up frame) in both

ACPI and APM environments. The RTL8100C(L) is capable of performing an internal reset through the

application of auxiliary power. When auxiliary power is applied and the main power remains off, the

RTL8100C(L) is ready and waiting for the magic packet or link change to wake the system up. Also, the LWAKE

pin provides 4 different output signals including active high, active low, positive pulse and negative pulse. The

versatility of the RTL8100C(L) LWAKE pin provides motherboards with Wake-On-LAN (WOL) functionality.

The RTL8100C(L) also supports analog Auto-Power-down, that is, the analog part of the RTL8100C(L) can be

shut down temporarily according to user requirements or when the RTL8100C(L) is in a power down state with

the wakeup function disabled. In addition, when the analog part is shut down and the isolate B pin is low (i.e. the

main power is off), then both the analog and digital parts stop functioning and the power consumption of the

RTL8100C(L) will be negligible. The RTL8100C(L) also supports an auxiliary power auto-detect function and

will auto-configure related bits of their own PCI power management registers in PCI configuration space.

• 128-pin QFP/LQFP

• Integrated fast Ethernet MAC, physical chip and transceiver in one chip

• 10 Mb/s and 100 Mb/s operation

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