Digital Audio Input Port Description; Dsd Pin Description; Supported Dsd Functional Blocks; Table 5-1. Dsdl Audio Input Port - Cirrus Logic CS485 Series User Manual

Digital Audio Input Port Description

CS485xx Hardware User's Manual
CS48560 is capable of accepting DSD audio data directly. DSD data differs from PCM in that audio is
provided as a contiguous stream of 1's and 0's on a single line. There is no framing clock (LRCLK), and
there is only one channel per line. The CS48560 supports internal conversion of DSD data to PCM which
can then be processed by the DSP.
Note: If DSD functionality is needed in a system design, contact your Cirrus Logic FAE.
5.1 Digital Audio Input Port Description
The CS48560 DSD port is designed to accept DSD audio data from up to 6 pins simultaneously (6 channels
total).
DSD features include:
• Up to Six DSD Input Pins
• One Shared DSD_CLK for All Data Pins
• Supports 44.1 kHz and 88.2 kHz Sample Rates

5.1.1 DSD Pin Description

Table 5-1 shows the mnemonic and pin description of the pins associated with the DSD port on CS48560.
Pin Name
DSD_CLK
DSD0
DSD1
DSD2
DSD3
DSD4
DSD5

5.1.2 Supported DSD Functional Blocks

Figure 5-1 below shows the functional block diagram of the features currently supported with the CS48560
DSD Port.
5-1
Direct Stream Data (DSD) Input Interface

Table 5-1. DSDl Audio Input Port

Pin Description
Bit clock used for latching the DSD audio
data. This clock is shared by DSD[5:0].
DSD Audio Input 0
DSD Audio Input 1
DSD Audio Input 2
DSD Audio Input 3
DSD Audio Input 4
DSD Audio Input 5
Copyright 2009 Cirrus Logic, Inc.
Chapter 5
LQFP-48
Pin Type
Pin #
8 Input
10 Input
11 Input
13 Input
14 Input
15 Input
6 Input
DS734UM7