CS22250 Datasheet, PDF (1/32 Pages) Cirrus Logic – WIRELESS 10BT CONTROLLER

CS22250 Data Sheet
Wireless 10BT Controller
1 Introduction
The Cirrus Logic CS22250 Wireless Network Controller enables high speed, 11 Mbps digital
wireless data connectivity for wireless Ethernet bridge, access points, and other broadband
applications.
The CS22250 is a highly integrated single-chip Ethernet bridge solution for wireless networks
supporting video, audio, voice, and data traffic. The programmable controller executes Cirrus
Logic’s Whitecap™2 networking protocol that provides Wi-Fi™ (802.11b) compliance, multimedia
and a foundation for quality of service (QoS) applications, and Ethernet to wireless bridging. The
device includes several high performance components including an ARM7TDMI RISC processor
core, a Forward Error Correction (FEC) codec, and a wireless radio MAC supporting up to 11
Mbps throughput. The CS22250 utilizes state of the art 0.18um CMOS process and is housed in
a 208 FPBGA compact package, offering low-lead inductance suitable for highly integrated radio
applications. The core is powered at 1.8 V with 3.3V I/O to reduce overall power consumption. In
addition, the CS22250 supports various power management modes for host, MAC, baseband,
and radio interfaces.
The CS22250 is designed to provide integrated low cost IEEE 802.3 standard compliant system
solutions. The controller also incorporates a high-speed parallel interface, which can be used to
interface with other ASICs (eg: HNPA 2.0 Network controller) to implement a variety of other
wireless LAN bridging products.
10 BaseT
Ethernet PHY
802.11b compatible
2.4 GHz
Digital Radio
PHY Transceiver
11 Mbps Wireless
Baseband I/F
AUI Serial Interface
CS22250
Wireless 10BT
Controller
System Memory
SDRAM (Up to 4MB)
SRAM (Up to 256KB)
Boot ROM/Flash
(Up to 1MB)
2.4 GHz Direct Sequence
Spread Spectrum
High Speed Parallel Interface _{Configuration Interface (USB)}
Figure 1. Example System Block Diagram
CS22250 Wireless 10BT Controller
1 of 32
www.cirrus.com
DS551PP2 Rev. 3.0