Manual

Description of Digital Audio Input Port when Configured for DSD Input

CS4953xx Hardware User’s Manual

Chapter 6

Direct Stream Data (DSD) Input Interface

CS4953xx is capable of accepting Direct Stream Data (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 CS4953xx supports internal conversion of

DSD data to PCM which can then be processed by the DSP.

6.1 Description of Digital Audio Input Port when Configured for

DSD Input

The CS4953xx DSD port is designed to accept DSD audio data from up to 6 pins simultaneously (6

channels total)

DSD features include:

• Six DSD Input Pins

• One Shared DSD_CLK for All Data Pins

• Supports 44.1 kHz (1 Fs), 88.2 kHz (2 Fs), and 176.4 kHz (4 Fs) Sample Rates

6.1.1 DSD Pin Description

Table 6-1 shows the mnemonic and pin description of the pins associated with the DSD port on

CS4953xx.

6.1.2 Supported DSD Functional Blocks

Figure 6-1 below shows the functional block diagram of the features currently supported with the

CS4953xx DSD Port.

Table 6-1. DSDl Audio Input Port

Pin Name Pin Description

LQFP-144

Pin #

LQFP-128

Pin #

Pin Type

DSD_CLK

Bit clock used for latching the DSD

audio data. This clock is shared by

DSD[5:0].

137 29 Input

DSD0 DSD Audio Input 0 135 27 Input

DSD1 DSD Audio Input 1 134 26 Input

DSD2 DSD Audio Input 2 132 24 Input

DSD3 DSD Audio Input 3 131 23 Input

DSD4 DSD Audio Input 4 142 34 Input

DSD5 DSD Audio Input 5 138 30 Input