bcm4748 Broadcom Corp., bcm4748 Datasheet
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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
TM
RC
(32 KB)
I-Cache
BCM4748
USB 2.0 Host Ports
533 MHz (BCM4748)
BCM4748
MIPS32® 74K®
Two BCM4748
USB 2.0 Host
High-Speed
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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
I
2
S and S/PDIF
Interface
128 KB
SRAM
Flash
UART
GPIO
Audio Interface
UART Interface
GPIOs
Flash Memory
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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 ...