Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

103171D • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice. • June 21, 2005

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PRODUCT SUMMARY

CX805-30 Baseband Processor

for Multiband GSM and GPRS Applications

Applications

• GSM handsets and modules (850/900/1800/1900 MHz)

• GPRS handsets and modules (850/900/1800/1900 MHz)

Features

• 0.25µ CMOS process technology

• ARM7 TDMI core

• Skyworks DSP core with all memory on-chip

• GPRS class 10 and circuit-switched data (14.4 kbps) services

• Half-rate, full-rate, and enhanced full-rate speech coders

• Voice features such as voice recognition, conversation record,

and voice memo

• Hardware accelerator for GPRS encryption algorithms (GEA 1

and 2)

• Integrated Real-Time Clock (RTC)

• Interface to handset MMI peripherals such as keypad, liquid

crystal display (LCD), and annunciator

• Interfaces to Skyworks IA and PMIC devices

• Interface to Subscriber Identity Module (SIM)

• Addresses up to 16 MB of external memory (flash or SRAM)

• Application Interfaces:

— Serial/RS-232

— Infra-red Data Adapter (IrDA)

• Low power operation. 3 V I/Os and an on-chip supplied 2.5 V

core

• Eight Chip Select (CS) signals for external memory

• 16-bit data bus, 24-bit address bus

Description

The Skyworks CX805-30 Baseband Processors (BPs) are highly

integrated, dual core processors optimized for use in Global

System for Mobile communications (GSM) and General Packet

Radio Service (GPRS) cellular handset applications. The CX805-30

is the baseband portion of the Skyworks GSM/GPRS System

Solution.

Both the Digital Signal Processor (DSP) core and the ARM7

THUMB

™ Reduced Instruction Set Computing (RISC) architecture

are well suited to meet the needs of low power, high performance

embedded systems such as cellular phones. The BP operates over

a range of 2.7 V to 3.3 V.

The baseband processing tasks are divided between the DSP and

ARM7 processor cores. The DSP core executes the physical layer

(layer 1) processing functions, and the ARM microcontroller core

executes the Layer 2 and Layer 3 protocol software and Man-

Machine Interface (MMI) functions. The two cores communicate

through a dedicated block of dual port memory. Each of the

functional blocks in the device can be individually powered down

to ensure minimum current consumption in the idle or standby

mode.

The CX805-30 family of devices is available in several package

options:

• 12 x 12 mm, 0.8 mm pitch, 160-pin FPBGA

— CX80501-31: supports up to Class 8 GPRS operation

— CX80502-33/-35: supports up to Class 10 GPRS operation

• 10 x 10 mm, 0.5 mm pitch, 180-pin FPBGA

— CX80501-32: supports up to Class 8 GPRS operation

— CX80502-34/-36: supports up to Class 10 GPRS operation

— CX80503-34: supports up to Class 10 GPRS operation and

features optimized ROM code

• Lead-free 10 x 10 mm, 0.5 mm pitch, 180-pin FPBGA

— CX80502-38: supports up to Class 10 GPRS operation

— CX80503-38: supports up to Class 10 GPRS operation and

features optimized ROM code

Figure 1 provides a block diagram of the CX805-30 device in a

typical application. Package dimensions are provided in Figure 2

for the 12 x 12 devices and Figure 3 for the 10 x 10 devices.

Skyworks offers this part as a lead (Pb)-free

“environmentally friendly” package that is RoHS

compliant (European Parliament for the Restriction of

Hazardous Substances).