CDB5376 datasheet(3/78 Pages) CIRRUS

3 / 78 page

CDB5376

DS612DB2

TABLE OF CONTENTS

1. INITIAL SETUP ......................................................................................................................... 5

1.1 Kit Contents ....................................................................................................................... 5

1.2 Hardware Setup ................................................................................................................. 5

1.2.1 Default Jumper Settings ........................................................................................ 6

1.2.2 Default DIP Switch Settings ................................................................................. 8

1.3 Software Setup .................................................................................................................. 9

1.3.1 PC Requirements .................................................................................................. 9

1.3.2 Seismic Evaluation Software Installation .............................................................. 9

1.3.3 USBXpress Driver Installation ............................................................................... 9

1.3.4 Launching the Seismic Evaluation Software ....................................................... 10

1.4 Self-testing CDB5376 ...................................................................................................... 11

1.4.1 Noise test ............................................................................................................ 11

1.4.2 Distortion Test ..................................................................................................... 12

2. HARDWARE DESCRIPTION ................................................................................................. 13

2.1 Block Diagram ................................................................................................................ 13

2.2 Analog Hardware ............................................................................................................. 14

2.2.1 Analog Inputs ...................................................................................................... 14

2.2.2 Differential Amplifiers .......................................................................................... 17

2.2.3 Delta-Sigma Modulators ..................................................................................... 18

2.2.4 Delta-Sigma Test DAC ........................................................................................ 19

2.2.5 Voltage Reference .............................................................................................. 20

2.3 Digital Hardware .............................................................................................................. 21

2.3.1 Digital Filter ......................................................................................................... 21

2.3.2 Interface CPLD ................................................................................................... 23

2.3.3 Digital Control Signals ......................................................................................... 25

2.3.4 Microcontroller .................................................................................................... 25

2.3.5 Phase Locked Loop ............................................................................................ 27

2.3.6 RS-485 Telemetry ............................................................................................... 29

2.3.7 UART Connection ............................................................................................... 30

2.3.8 External Connector ............................................................................................. 31

2.4 Power Supplies ................................................................................................................ 31

2.4.1 Analog Voltage Regulators ................................................................................. 31

2.4.2 Digital Voltage Regulators .................................................................................. 32

2.5 PCB Layout ..................................................................................................................... 33

2.5.1 Layer Stack ......................................................................................................... 33

2.5.2 Differential Pairs .................................................................................................. 33

2.5.3 Bypass Capacitors .............................................................................................. 34

2.5.4 Dual Row Headers .............................................................................................. 35

3. SOFTWARE DESCRIPTION .................................................................................................. 36

3.1 Menu Bar ......................................................................................................................... 36

3.2 About Panel ..................................................................................................................... 37

3.3 Setup Panel ..................................................................................................................... 38

3.3.1 USB Port ............................................................................................................. 39

3.3.2 Digital Filter ......................................................................................................... 40

3.3.3 Analog Front End ................................................................................................ 41

3.3.4 Test Bit Stream ................................................................................................... 41

3.3.5 Gain/Offset .......................................................................................................... 42

3.3.6 Data Capture ....................................................................................................... 43

3.3.7 External Macros .................................................................................................. 44

3.4 Analysis Panel ................................................................................................................. 45

3.4.1 Test Select .......................................................................................................... 46

3.4.2 Statistics .............................................................................................................. 47

CDB5376 Datasheet(PDF) 3 Page - Cirrus Logic

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