General Description
The Realtek RTL8101L is a highly integrated and cost-effective single-chip Fast Ethernet controller that provides 32-bit performance, PCI bus master capability, and full compliance with IEEE 802.3u 100Base-TX 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 RTL8101L no longer supports CardBus mode as RTL8139C does.

FEATUREs:
Ethernet Controller Features:
100 pin LQFP
Integrated Fast Ethernet MAC, Physical chip and
transceiver in one chip
10 Mb/s and 100 Mb/s operation
Supports 10 Mb/s and 100 Mb/s N-way
Auto-negotiation operation
PCI local bus single-chip Fast Ethernet controller
— Compliant to PCI Revision 2.2
— Supports PCI clock 16.75MHz-40MHz
— Supports PCI target fast back-to-back transaction
— Provides PCI bus master data transfers and PCI memory space or I/O space mapped data transfers of RTL8101L's operational registers
— Supports PCI VPD (Vital Product Data)
— Supports ACPI, PCI power management
Supports 25MHz crystal or 25MHz OSC as the internal clock source. The frequency deviation of either crystal
or OSC must be within 50 PPM.
Compliant to PC99/PC2001standard
Supports Wake-On-LAN function and remote wake-up (Magic Packet*, LinkChg and Microsoft® wake-up frame)
Supports 4 Wake-On-LAN (WOL) signals (active high, active low, positive pulse, and negative pulse)
Supports auxiliary power-on internal reset, for remote wake-up when main power remains off
Supports auxiliary power auto-detect, and sets the related capability of power management registers in PCI
configuration space
Includes a programmable PCI burst size and early Tx/Rx threshold
Supports a 32-bit general-purpose timer with the external PCI clock as clock source to generate timer-interrupt
Contains two large (2Kbyte) independent receive and transmit FIFOs
Advanced power saving mode when LAN function or wakeup function is not used
Uses 93C46 (64*16-bit EEPROM) to store resource configuration, ID parameter, and VPD data
Supports LED pins for various network activity indications
Supports loopback capability
Half/Full duplex capability
Supports Full Duplex Flow Control (IEEE 802.3x)
3.3V power supply, 3.3V and 5V I/O tolerance
Interface for 128K byte (max) Boot ROM for both EEPROM and Flash Memory.

MC’97 Controller Features:
MC’97 compatible digital controller chip
PCI local bus single-chip Fast Ethernet controller
32-bit PCI bus master and PCI v 2.2 compliant
PCI Bus Power Management Interface Specification v1.1 compliant
High performance bus master DMA for data transfer
AC’97 v 2.2 compliant
Supports 16-bit modem line (LINE1)
Full-duplex operation for simultaneous LINE1 transactions
Low latency GPIO updated
8 double-WORD (16 samples) FIFO depth for each bus master of LINE1-OUT/IN
3.3V power supply, 3.3V and 5V I/O tolerance