Manual

DS886DB11 Copyright 2014 Cirrus Logic v
CDB47xxx User’s Manual
5.1.3.1 Creating a Flash Image .................................................................................5-5
5.1.3.2 Programming the Flash Image into the Flash Device....................................5-5
Chapter 6. CDB47xxx Schematics .......................................................................6-1
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2 CDB47xxS Single-Ended Schematic Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2.1 CDB47xxxS Block Diagram............................................................................................6-1
6.2.2 Daughtercard Connectors ..............................................................................................6-1
6.2.3 Digital Audio and Control Connectors ............................................................................6-1
6.2.4 Memory...........................................................................................................................6-2
6.2.5 Microphone Preamplifier.................................................................................................6-2
6.2.6 Power .............................................................................................................................6-2
6.2.7 Input Filters.....................................................................................................................6-2
6.2.8 Output Filters..................................................................................................................6-3
6.2.9 MCU Block Diagram .......................................................................................................6-3
6.2.10 MCU .............................................................................................................................6-3
6.2.11 User Interface Devices .................................................................................................6-3
6.3 CDB47xxD Differential Schematic Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-15
6.3.1 CDB47xxxD Block Diagram..........................................................................................6-15
6.3.2 Daughtercard Connectors ............................................................................................6-15
6.3.3 Digital Audio and Control Connectors ..........................................................................6-15
6.3.4 Memory.........................................................................................................................6-15
6.3.5 Microphone Preamplifier...............................................................................................6-15
6.3.6 Power ...........................................................................................................................6-15
6.3.7 Input Filters...................................................................................................................6-15
6.3.8 Output Filters................................................................................................................6-15
6.3.9 MCU Block Diagram .....................................................................................................6-16
6.3.10 MCU ...........................................................................................................................6-16
6.3.11 User Interface Devices ...............................................................................................6-16
6.4 CDB47xxx-DC48 Daughtercard Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28
6.4.1 CDB47xxx-DC48 Block Diagram..................................................................................6-28
6.4.2 CDB47xxx-DC48 Schematic ........................................................................................6-28
6.5 Obtaining Schematic Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-31
Chapter 7. Troubleshooting..................................................................................7-1
7.1 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.1.1 Power LEDs....................................................................................................................7-1
7.1.2 Board not Recognized by PC .........................................................................................7-1
7.1.3 Audio is not Heard ..........................................................................................................7-2
Revision History ....................................................................................................7-2
Figures
Figure 1-1. CDB47xxxS-DCxx Kit Contents .................................................................................................1-2
Figure 1-2. CDB47xxxD-DCxx Kit Contents .................................................................................................1-2
Figure 1-3. CDB47xxxS Main Board Block Diagram ....................................................................................1-4
Figure 1-4. CDB47xxxD Main Board Block Diagram ....................................................................................1-5
Figure 1-5. CDB47xxx-DC48 Daughtercard Block Diagram ......................................................................1-10