Cirrus-logic CDB5378 Manual do Utilizador descarregar pdf (Página 51)

CDB5378

DS639DB4 51

3.5 Control Panel

The Control panel is used to write and read register settings and to send commands to the digital filter.

It consists of the following sub-panels and controls.

• DF Registers

• DF Commands

• SPI1

• Macros

•GPIO

• Customize

• External Macros

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 73 74

Features 1
General Description 1
2 DS639DB4 2
IMPORTANT NOTICE 2
TABLE OF CONTENTS 3
LIST OF FIGURES 5
LIST OF TABLES 6
1. INITIAL SETUP 7
1.1 Kit Contents 7
1.2 Hardware Setup 7
1.3 Software Setup 11
1.3.1 PC Requirements 11
12 DS639DB4 12
1.4 Self-testing CDB5378 13
1.4.1 Noise test 13
1.4.2 Distortion Test 14
2.1 Block Diagram 15
2. HARDWARE DESCRIPTION 15
2.2 Analog Hardware 16
2.2.1 Analog Inputs 16
2.2.1.4 Input Protection 17
2.2.1.5 Input RC Filters 17
2.2.1.6 Common Mode Bias 18
2.2.2.3 Anti-alias RC Filters 19
2.2.3 Delta-Sigma Modulator 20
DS639DB4 21 21
2.2.5.1 VREF_MOD 22
2.2.5.2 Common Mode Bias 22
GPIO Signals Description 23
2.3.1.3 Phase Locked Loop 24
2.3.2 Interface CPLD 25
26 DS639DB4 26
2.3.3 Digital Control Signals 27
2.3.4 Microcontroller 27
28 DS639DB4 28
2.3.5 RS-485 Telemetry 29
2.3.5.1 CLK, SYNC 30
2.3.6 UART Connection 31
2.3.7 External Connector 32
2.4 Power Supplies 32
DS639DB4 33 33
2.5 PCB Layout 34
2.5.1 Layer Stack 34
2.5.2 Differential Pairs 34
2.5.3 Bypass Capacitors 35
2.5.4 Dual-row Headers 36
3. SOFTWARE DESCRIPTION 37
3.1 Menu Bar 37
3.2 About Panel 38
• Data Capture 39
3.3.1 USB Port 40
3.3.2 Digital Filter 41
3.3.3 Analog Front End 42
3.3.4 Test Bit Stream 43
3.3.5 Gain / Offset 44
3.3.6 Data Capture 45
3.3.7 External Macros 46
3.4 Analysis Panel 47
3.4.1 Test Select 48
3.4.2 Statistics 49
3.4.3 Plot Enable 49
3.4.4 Cursor 49
3.4.5 Zoom 50
3.4.6 Refresh 50
3.4.7 Harmonics 50
3.4.8 Spot Noise 50
3.4.9 Plot Error 50
3.5 Control Panel 51
3.5.1 DF Registers 52
3.5.2 DF Commands 52
3.5.3 SPI 52
3.5.4 Macros 53
3.5.5 GPIO 53
3.5.6 Customize 54
3.5.7 External Macros 54
4. BILL OF MATERIALS 55
56 DS639DB4 56
DS639DB4 57 57
5. LAYER PLOTS 58
DS639DB4 59 59
60 DS639DB4 60
DS639DB4 61 61
62 DS639DB4 62
DS639DB4 63 63
6. SCHEMATICS 64
DS639DB4 65 65
66 DS639DB4 66
DS639DB4 67 67
68 DS639DB4 68
DS639DB4 69 69
70 DS639DB4 70
DS639DB4 71 71
72 DS639DB4 72
DS639DB4 73 73
7. REVISION HISTORY 74

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