AD1940(Rev0) データシートの表示（PDF） - Analog Devices

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AD1940
(Rev.:Rev0)

SigmaDSP Multichannel 28-Bit Audio Processor

Analog Devices 

AD1940

TABLE OF CONTENTS

Specifications..................................................................................... 3

Digital I/O ..................................................................................... 3

Power.............................................................................................. 3

Temperature Range ...................................................................... 3

Digital Timing............................................................................... 4

PLL ................................................................................................. 4

Regulator........................................................................................ 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Digital Timing Diagrams................................................................. 6

Pin Configuration and Function Descriptions............................. 8

Features ............................................................................................ 10

Pin Functions .............................................................................. 11

Signal Processing ............................................................................ 13

Overview...................................................................................... 13

Numeric Formats........................................................................ 13

Programming .............................................................................. 13

Control Port..................................................................................... 14

Overview...................................................................................... 14

REVISION HISTORY

7/04—Revision 0: Initial Version

RAMs and Registers....................................................................... 16

Control Port Addressing............................................................ 16

Parameter RAM Contents......................................................... 16

Recommended Program/Parameter Loading Procedures.... 17

Target/Slew RAM ....................................................................... 17

Safeload Registers....................................................................... 19

Data Capture Registers .............................................................. 20

DSP Core Control Register ....................................................... 20

RAM Configuration Register ................................................... 21

Control Port Read/Write Data Formats .................................. 22

Serial Data Input/Output Ports .................................................... 24

Serial Output Control Registers ............................................... 26

Serial Input Control Register .................................................... 26

Initialization .................................................................................... 29

Power-Up Sequence ................................................................... 29

Setting Master Clock/PLL Mode.............................................. 29

Voltage Regulator ....................................................................... 29

Outline Dimensions ....................................................................... 30

Ordering Guide .......................................................................... 30

Rev. 0 | Page 2 of 32

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