CS22220 Wireless PCMCIA Controller

1 of 34

DS557PP2

Rev. 3.0

www.cirrus.com

1

Description

The Cirrus Logic CS22220 Wireless Network Controller enables high performance, 11 Megabits per

second digital wireless data connectivity for PCMCIA, mobile, embedded systems and other cost

The CS22220 is a highly integrated single-chip PCMCIA 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 as well as multimedia

and quality of service (QoS) support. 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 to11 Mbps throughput. The CS22220 utilizes state of the art

0.18um CMOS process and is housed in a 208 FPBGA compact (15mm x 15mm) package, which

has low-lead inductance suitable for highly integrated radio applications. The core is powered at 1.8

V with 3.3V (5.0V tolerant) I/O to reduce overall power consumption. In addition, the CS22220

supports low power management for the host and radio interfaces.

The CS22220 is designed to be an integral part of a PC card (PCMCIA 2.1/JEIDA 4.2). The

PCMCIA host interface also supports both little endian and big endian protocol for easy interfacing

to popular microprocessors in embedded system applications.

Figure 1. Example System Block Diagram

11 Mbps

Wireless

Baseband I/F

CS22220

Wireless

PCMCIA

Controller

802.11b compatible

2.4 GHz

Digital Radio

PHY Transceiver

2.4 GHz Direct Sequence

Spread Spectrum

System Memory

SDRAM (Up to 4MB)

SRAM (Up to 256KB)

PCMCIA Host or Embedded CPU

Networking Data

Boot ROM/Flash

(Upto1MB)

CS22220 Data Sheet

Wireless PCMCIA Controller