AD9953PCB datasheet(13/42 Pages) AD

13 / 42 page

PRELIMINARY TECHNICAL DATA

AD9953

The AD9953 serial port is a flexible, synchronous serial communications port allowing easy

interface to many industry standard micro-controllers and microprocessors. The serial I/O port is

compatible with most synchronous transfer formats, including both the Motorola 6905/11 SPI and

Intel 8051 SSR protocols.

The interface allows read/write access to all registers that configure the AD9953. MSB first or LSB

first transfer formats are supported. In addition, the AD9953’s serial interface port can be

configured as a single pin I/O (SDIO), which allows a two-wire interface or two unidirectional pins

for in/out (SDIO/SDO), which enables a three wire interface. Two optional pins (IOSYNC and

CSB) enable greater flexibility for system design-in of the AD9953.

The Register Map is listed in the following table. The serial address numbers associated with

each of the registers are shown in hexadecimal format. Angle brackets <> are used to reference

specific bits or ranges of bits. For example, <3> designates bit 3 while <7:3> designates the range

of bits from 7 down to 3, inclusive.

REV. PrB 1/30/03

Page 13

Analog Devices, Inc.

AD9953PCB データシート(PDF) 13 Page - Analog Devices