STE10A datasheet(5/82 Pages) STMICROELECTRONICS

5 / 82 page

STE10/100A

Overview

5/82

1.2

Detailed features

FIFO

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Provides independent transmission and receiving FIFOs, each 2k bytes long

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Pre-fetches up to two transmit packets to minimize inter frame gap (IFG) to 0.96us

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Retransmits collided packet without reload from host memory within 64 bytes.

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Automatically retransmits FIFO under-run packet with maximum drain threshold until

3rd time retry failure threshold of next packet.

PCI interface

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Provides 32-bit PCI bus master data transfer

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Supports PCI clock with frequency from 0Hz to 33MHz

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Supports network operation with PCI system clock from 20MHz to 33MHz

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Provides performance meter and PCI bus master latency timer for tuning the threshold

to enhance the performance

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Provides burst transmit packet interrupt and transmit/receive early interrupt to reduce

host CPU utilization

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As bus master, supports memory-read, memory-read-line, memory-read-multiple,

memory-write, memory-write-and-invalidate command

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Supports big or little endian byte ordering

EEPROM/Boot ROM interface

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Provides writable flash ROM and EPROM as boot ROM, up to 128Kbit

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Provides PCI to access boot ROM by byte, word, or double word

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Re-writes flash boot ROM through I/O port by programming register

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Provides serial interface for read/write 93C46 EEPROM

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Automatically loads device ID, vendor ID, subsystem ID, subsystem vendor ID,

maximum-latency, and minimum-grand from the 64 byte contents of 93C46 after PCI

reset de-asserted

MAC/physical

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Integrates the complete set of physical layer 100BASE-TX and 10BASE-T functions

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Provides full-duplex operation in both 100Mbps and 10Mbps modes

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Provides auto-negotiation (NWAY) function of full/half duplex operation for both 10 and

100 Mbps

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Provides MLT-3 transceiver with DC restoration for base-line wander compensation

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Provides transmit wave-shaper, receive filters, and adaptive equalizer

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Provides MAC and transceiver (TXCVR) loop-back modes for diagnostic

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Built-in stream cipher scrambler/ de-scrambler and 4B/5B encoder/decoder

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Supports external transmit and receive transformer with 1:1 turn ratio

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