bcm4748 Broadcom Corp., bcm4748 Datasheet

bcm4748

Manufacturer Part Number

bcm4748

Description

Intensi-fi Xlr 2 2 Ieee 802.11n 2.4 Ghz 5 Ghz Soc

Manufacturer

Broadcom Corp.

Datasheet

1.BCM4748.pdf (2 pages)

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•

INTENSI-FI

High-performance, low-cost IEEE 802.11n-compliant System-

on-a-Chip (SoC) CPU/MAC/baseband/radio for enterprise

wireless Access Point (AP) solutions

Optimized Intensi-fi

Technology — a unique set of hardware and software

enhancements that ensure more robust wireless coverage

Integrated 533 MHz MIPS32

• 32 KB I-cache, 32 KB D-cache

• 64-entry translation lookaside buffer (TLB)

Enhanced 10/100/1000 Ethernet MAC controller

Integrated dual-band radio transceiver

On-chip SRAM for latency-sensitive applications

State-of-the-art security (IEEE 802.1X/WPA™/WPA2™)

USB 2.0 EHCI host ports

Up to 2 Gb DDR SDRAM and up to 32 MB Flash memory

FEM/PA

2x2 11n

2.4/5 GHz

F E A T U R E S

XLR platform with Accelerange™

2x2 11n

2.4/5 GHz (BCM4748)

DDR1/DDR2

(BCM4748)

XLR 2 × 2 IEEE 802.11N 2.4 GHZ + 5 GHZ SOC

FEM/PA

74K

BCM4342E

core

MII/RvMII/RGMII

MAC/BB/Radio

DDR SDRAM

Draft 802.11n

10/100/1000

PCIe

Interface

1-Lane

Functional Block Diagram

MAC

I/F

(32 KB)

I-Cache

BCM4748

USB 2.0 Host Ports

533 MHz (BCM4748)

BCM4748

MIPS32® 74K®

Two BCM4748

USB 2.0 Host

High-Speed

•

EJTAG

Core

Single-chip IEEE 802.11n with reduced power consumption

enables compact form factors with low cost and high-

performance.

Optimized reduced bill of materials (RBOM) and PCB enable

smallest cost delta over IEEE 802.11g designs.

Reduced host CPU utilization

Enhanced system performance

Two-stream spatial multiplexing with data rates up to 300

Mbps

Multiple memory (DDR/Flash) configurations supported to

enable low-end to high-end performance options

Single- and dual-band IEEE 802.11n enterprise wireless APs

Simultaneous dual-band AP with additional MAC/PHY/

radio (e.g., BCM4342)

D-Cache

(32 KB)

S U M M A R Y O F B E N E F I T S

A P P L I C A T I O N S

S and S/PDIF

Interface

128 KB

SRAM

Flash

UART

GPIO

Audio Interface

UART Interface

GPIOs

Flash Memory

Related parts for bcm4748

bcm4748 Summary of contents

Page 1

... Single- and dual-band IEEE 802.11n enterprise wireless APs • Simultaneous dual-band AP with additional MAC/PHY/ radio (e.g., BCM4342) Functional Block Diagram BCM4748 Draft 802.11n 533 MHz (BCM4748) MAC/BB/Radio MIPS32® 74K® Core 1-Lane I-Cache PCIe TM RC ...

Page 2

... Unified Access Point (UAP) software to enable complete enterprise AP solutions for standalone or switch-managed products. The BCM4748 integrates two USB 2.0 EHCI host ports. The device also includes an 8/16-bit parallel external bus interface (EBI) for Flash memory as well as other generic parallel devices. The 16 dedicated GPIOs are another feature of the device ...

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