RTL8308B Просмотр технического описания (PDF) - Realtek Semiconductor

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RTL8308B

REALTEK SINGLE CHIP 8-PORT 10/100 ETHERNET SWITCH CONTROLLER WITH EMBEDDED MEMORY

Realtek Semiconductor 

1. Features

Supports eight 10/100Mbps Ethernet ports with

RMII interface

Provides forwarding of non-blocking and

non-head-of-line-blocking

2M bit DRAM built in as a packet storage buffer

Page based buffer management to efficiently

utilize the internal packet buffer

Ultra low power consumption with less than

160mA at 3.3V operating voltage

Embedded 8K entry look-up table and 128 entry

CAM

Supports address hashing or direct mapping for

look-up table

128-entry CAM is used to eliminate the hash

collision issues

Supports full and half duplex operation

Link, speed and duplex status are auto-detected via

MDIO

RTL8308B

Broadcast storm control

Flow control fully supported:

Half-duplex: back pressure

Full-duplex: IEEE 802.3X

Auto-negotiated Full-duplex flow control by

writing the ability via MDIO to external PHY

Supports Store-and-forward and cut-through

operation

Provides an LED display to indicate network loop

existence

Reversible PHYAD order for diverse PHY usage

3.3V 24LC02 interface

Optional EEPROM 24LC02 for Loop detect

configuration

128-pin PQFP, 0.35 um, 3.3V CMOS technology

2002/01/23

2

Rev. 2.0

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