Datasheet > L64388

L64388

更新时间： 2024-09-22 23:43:59

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L64388 Remote Access Processor (RAP) Chip data sheet/5/98

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L64388 数据手册

L64388

Remote Access Processor

(RAP™) Chip

Datasheet

The L64388 Remote Access Processor (RAP™) chip is a general-

purpose, high-performance communications processor for remote access

applications, including high-speed Ethernet LAN-to-WAN

internetworking. Based on LSI Logic’s CoreWare methodology, the

RAP chip integrates a MIPS RISC processor, DMA controller, Ethernet

controller, and serial wide area network controllers (SWCs) on a single

chip. The RAP chip also includes a peripheral component interconnect

(PCI) interface for connecting to a 33-MHz, 32-bit PCI bus. It contains a

modem interface with integrated voice and data ports.

Figure 1 illustrates the RAP chip in a general internetworking application.

Local data trafﬁc on the 10/100-Mbit Ethernet LAN or server data trafﬁc

on the PCI bus is internetworked with various WAN technologies,

including POTS (plain old telephone system), ISDN (integrated services

digital network), or high-speed digital WAN, such as ADSL (asymmetric

digital subscriber line), DS-1/E-1, DS-3, or HFC (hybrid ﬁber coaxial).

Figure 1 RAP Internetworking Application

10/100-Mbit Ethernet

ISDN

Basic Rate Interface (BRI)

Workstation

Small Ofﬁce/

Home Ofﬁce

(SOHO)

High Speed Digital

Ethernet

Port

ISDN

Remote Access

Processor

WAN

V.34

Analog

V.34 Analog

Workstation

High Speed

Digital

PCI

Portable

Server

Network Server

Server

May 1998

12 3 4 5 6 7...12

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