Eval-AD1940EB【PDF 2/32 页】SigmaDSP-TM Multichannel 28-Bit Audio Pr

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AD1940

TABLE OF CONTENTS

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

Rev. 0 | Page 2 of 32

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

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

REVISION HISTORY

7/04—Revision 0: Initial Version

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