Cirrus Logic CDB47xxx, User Manual

Page: 17 / 86

CDB47xxx Daughtercard System Description
CDB47xxx User’s Manual
DS886DB9 Copyright 2012 Cirrus Logic, Inc 1-10
1.4 CDB47xxx Daughtercard System Description
The CS470xx Audio SOC Daughtercard is exactly the same for both the CDB47xxxS and CDB47xxxD
evaluation kits. All of the analog and digital audio signals are fed to the CS470xx (U1) through the
daughtercard connectors (J2 - J3). All of the analog pins of the CS470xx are connected to the analog
daughtercard connector (J3). The distinction between a differential system and single-ended system is
made on the main board where either the full differential pair is used, or only the positive (+) half of the
pair.
A detailed block diagram of the CDB47xxxD(or S)-DC48 daughtercard for single-ended or differential
platforms is shown in Figure 1-5 . The CDB47xxxD ( or S)-DC28 and CDB47xxxD (or S)-DC24
daughtercards for single-ended or differential platforms are shown in Figure 1-6 and Figure 1-7
respectively. The sections that follow provide a detailed description of each block.
Figure 1-5. CDB47xxx-DC48 Daughtercard Block Diagram