Preliminary Technical Information

AD6426

This Information applies to a product under development. Its characteristics and specifications are subject to change without notice. Analog Devices assumes no

obligation regarding future manufacture unless otherwise agreed to in writing. No responsibility is assumed by Analog Devices for its use; nor for any

infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent

rights of Analog Devices.

Revision Preliminary 2.3 (June 9, ´98)

- 2 -

Confidential Information

ENHANCED

GSM

PROCESSOR

AD6426

VDD(10)

GND(10)

VBC / EVBC

AD6421 / 25

MCLK

RESET

ASDI

ASDIFS

ASDOFS

ASCLK

ASDO

BSDI

BSDIFS

BSCLK

BSDO

BSDOFS

MODE

VSDI

VSDO

VSCLK

VSFS

RXON

TXON

CLKOUT

VBCRESET

ASDO

ASOFS

ASCLK

ASDI

BSDO

BSOFS

BSCLK

BSDI

BSIFS

VSDO

VSDI

VSCLK

VSFS

RXON

TXENABLE

TXPHASE

TXPA

CALIBRATERADIO

RADIOPWRCTL

SYNTHEN0

SYNTHEN1

SYNTHDATA

SYNTHCLK

AGCA

AGCB

RADIO

VCTCXO

JTAGEN

TCK

TMS

TDI

TDO

JTAG

PORT

IRQ6

RESET

BOOTCODE

SYSTEM

CONNECTOR

ACCESSORY

SIM

SIMCARD

SIMDATAOP

SIMDATAIP

SIMCLK

SIMRESET

SIMPROG

SIMSUPPLY

EEPROM

EEPROMEN

EEPROMDATA

EEPROMCLK

DISPLAY

FLASH

ROM

SRAM

FLASHPWD

ROMCS

ADD [20:0]

DATA [15:0]

RAMCS

RD

WR

HWR

LWR

LCDCTL

DISPLAYCS

BACKLIGHT

BACKLIGHT

KEYPADROW [5:0]

KEYPADCOL [3:0]

KEYPAD

GPIO [9:0]

GPCS

GPPWRCTL

USCRI

USCRX

USCTX

USCCTS

USCRTS

CLKIN

OSC13MON

OSCIN

OSCOUT

POWER

SUB-

SYSTEM

VDDRTC

PWRON

Figure 2. External Interfaces of the AD6426