Cirrus Logic CRD5376 - Manual (Page 3)

CRD5376
DS612RD2 3
TABLE OF CONTENTS
1. INITIAL SETUP ......................................................................................................................... 5
1.1 Kit Contents ....................................................................................................................... 5
1.2 Hardware Setup ................................................................................................................. 5
1.2.1 Default Jumper Settings ........................................................................................ 6
1.3 Software Setup .................................................................................................................. 7
1.3.1 PC Requirements .................................................................................................. 7
1.3.2 Seismic Evaluation Software Installation .............................................................. 7
1.3.3 USBXpress Driver Installation ............................................................................... 7
1.3.4 Launching the Seismic Evaluation Software ......................................................... 8
1.4 Self-Testing CRD5376 ....................................................................................................... 9
1.4.1 Noise Test ............................................................................................................. 9
1.4.2 Distortion Test ..................................................................................................... 10
2. HARDWARE DESCRIPTION ................................................................................................. 11
2.1 Block Diagram ................................................................................................................ 11
2.2 Analog Hardware ............................................................................................................. 12
2.2.1 Analog Inputs ...................................................................................................... 12
2.2.2 Differential Amplifiers .......................................................................................... 16
2.2.3 Delta-Sigma Modulators ..................................................................................... 17
2.2.4 Delta-Sigma Test DAC ........................................................................................ 18
2.2.5 Voltage Reference .............................................................................................. 18
2.3 Digital Hardware .............................................................................................................. 19
2.3.1 Digital Filter ......................................................................................................... 19
2.3.2 Microcontroller .................................................................................................... 22
2.3.3 Phase Locked Loop ............................................................................................ 25
2.3.4 RS-485 Telemetry ............................................................................................... 26
2.3.5 UART Connection ............................................................................................... 28
2.3.6 External Connector ............................................................................................. 28
2.4 Power Supplies ................................................................................................................ 28
2.4.1 Analog Voltage Regulators ................................................................................. 29
2.5 PCB Layout ..................................................................................................................... 29
2.5.1 Layer Stack ......................................................................................................... 29
2.5.2 Differential Pairs .................................................................................................. 30
2.5.3 Bypass Capacitors .............................................................................................. 31
3. SOFTWARE DESCRIPTION .................................................................................................. 32
3.1 Menu Bar ......................................................................................................................... 32
3.2 About Panel ..................................................................................................................... 33
3.3 Setup Panel ..................................................................................................................... 34
3.3.1 USB Port ............................................................................................................. 35
3.3.2 Digital Filter ......................................................................................................... 36
3.3.3 Analog Front End ................................................................................................ 37
3.3.4 Test Bit Stream ................................................................................................... 37
3.3.5 Gain/Offset .......................................................................................................... 38
3.3.6 Data Capture ....................................................................................................... 39
3.3.7 External Macros .................................................................................................. 40
3.4 Analysis Panel ................................................................................................................. 41
3.4.1 Test Select .......................................................................................................... 42
3.4.2 Statistics .............................................................................................................. 43
3.4.3 Plot Enable .......................................................................................................... 43
3.4.4 Cursor ................................................................................................................. 44
3.4.5 Zoom ................................................................................................................... 44
3.4.6 Refresh ............................................................................................................... 44