RTL8100C & RTL8100CL
Datasheet
1.
General Description
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
and Power 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 (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 (Advanced Power Management)
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 a Magic Packet or Link Change to wake the system up. Also, the LWAKE pin
provides 4 output signals (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. 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. When the analog part is shut down and the IsolateB pin is low (i.e. the
main power is off), both the analog and digital parts stop functioning and the power consumption of the
RTL8100C(L) is negligible. The RTL8100C(L) also supports an auxiliary power auto-detect function, and
will auto-configure related bits of its PCI power management registers in PCI configuration space.
PCI Vital Product Data (VPD) is also supported to provide hardware identifier information. The
information may consist of part number, serial number, OEM brand name, and other detailed information.
To provide cost down support, the RTL8100C(L) is capable of using a 25MHz crystal or OSC as its internal
clock source.
The RTL8100C(L) keeps network maintenance costs low and eliminates usage barriers. It is the easiest way
to upgrade a network from 10 to 100Mbps. It also supports full-duplex operation, making 200Mbps
bandwidth possible at no additional cost. To improve compatibility with other brands’ products, the
RTL8100C(L) is also capable of receiving packets with an InterFrame Gap equal to or more than 40-bit
time. The RTL8100C(L) is highly integrated and requires no glue logic or external memory.
Single-Chip Fast Ethernet Controller
1
Track ID: JATR-1076-21 Rev. 1.06
ETC [ ETC ]
