
RTL8100B(L) 
2001-11-9
Rev.1.41
2 
1. Features
z 
100 pin QFP/LQFP 
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Integrated Fast Ethernet MAC, Physical chip and 
transceiver in one chip 
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10 Mb/s and 100 Mb/s operation 
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Supports 10 Mb/s and 100 Mb/s N-way 
Auto-negotiation operation 
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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 RTL8100B(L)'s operational registers 
 
Supports PCI VPD (Vital Product Data) 
 
Supports ACPI, PCI power management 
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Supports 25MHz crystal or 25MHz OSC as the internal 
clock source. The frequency deviation of either crystal or 
OSC must be within 50 PPM. 
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Compliant to PC99/PC2001 standard 
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Supports Wake-On-LAN function and remote wake-up 
(Magic Packet*, LinkChg and Microsoft
 wake-up frame) 
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Supports 4 Wake-On-LAN (WOL) signals (active high, 
active low, positive pulse, and negative pulse) 
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Supports auxiliary power-on internal reset, to be ready 
for remote wake-up when main power still remains off 
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Supports auxiliary power auto-detect, and sets the 
related capability of power management registers in PCI 
configuration space. 
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Includes a programmable, PCI burst size and early 
Tx/Rx threshold. 
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Supports a 32-bit general-purpose timer with the 
external PCI clock as clock source, to generate 
timer-interrupt 
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Contains two large (2Kbyte) independent receive and 
transmit FIFOs 
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Advanced power saving mode when LAN function or 
wakeup function is not used 
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Uses 93C46 (64*16-bit EEPROM) to store resource 
configuration, ID parameter, and VPD data. 
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Supports LED pins for various network activity 
indications 
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Supports loopback capability 
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Half/Full duplex capability 
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Supports Full Duplex Flow Control (IEEE 802.3x) 
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2.5/3.3V power supply with 5V tolerant I/Os. 
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0.25u CMOS process 
* Third-party brands and names are the property of their 
respective owners.
Note: The model number of the QFP package is RTL8100B. The LQFP package model number is RTL8100BL.