CS22220 Data Sheet
Wireless PCMCIA Controller
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
sensitive applications.
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.
PCMCIA Host or Embedded CPU
Networking Data
802.11b compatible
2.4 GHz
Digital Radio
PHY Transceiver
System Memory
SDRAM (Up to 4MB)
SRAM (Up to 256KB)
Boot ROM/Flash
(Up to 1MB)
11 Mbps
Wireless
Baseband I/F
CS22220
Wireless
PCMCIA
Controller
2.4 GHz Direct Sequence
Spread Spectrum
Figure 1. Example System Block Diagram
CS22220 Wireless PCMCIA Controller
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www.cirrus.com
DS557PP2
Rev. 3.0
CIRRUS [ CIRRUS LOGIC ]
