general desc-ription the ip100a is a single-chip, full duplex, 10/100mbps ethernet mac + phy incorporating a 32-bit pci with bus master support. the ip100a is designed for use in a variety of applications including workstation nics, pc motherboards, and other systems utilizing a pci bus that require network connectivity to an ethernet or fast ethernet lan. the ip100a includes a pci bus interface unit, ieee 802.3 compliant mac, transmit and receive fifo buffers, ieee 802.3 compliant 100base-tx, 10base-t, and 100base-fx phy, serial eeprom interface, expansion rom interface, and led drivers. the ip100a implements a rich set of control and status registers. accessible via the pci interface, these registers provide a host system visibility into the features and operating state of the ip100a. network management statistics are also recorded, and host access to registers of the phy device are facilitated through the ip100a’s pci interface. the ip100a supports features for use in “green pcs” or systems where control over system power consumption is desired. the ip100a supports several power down states, and the ability to issue a system “wake event” via reception of unique, user defined ethernet frames. in addition, the ip100a can assert a wake event in response to changes in the ethernet link status. feature-single chip 10/100base, half or full duplex ethernet media access controller -ieee 802.3 compliant 100base-tx/100base-fx/10bse-t pci bus master scatter/gather dma on any byte boundary -full operation with pci clock from 25 mhz to 33 mhz -pci revision 2.2 compliant -on-chip transmit and receive fifo buffers -on-chip led drivers -power management capabilities for acpi 1.0 compliant systems -wakeonlan support -management statistics gathering -ip multicast receive and filter support using 64 bit hash table -transmit polling -auto pad in-sertion for short packets -programmable minimum inter packet gap -programmable transmit and receive fifo watermarks -smart cable analyzer (sca) support -capable of using 93c46 or 93c56 eeprom -on-chip crystal oscillator -on-chip voltage regulator -2.5/3.3v cmos with 5v tolerant i/o -0.25µm technology -128-pin pqfp