Chapter 5: digital audio input interface, 1 digital audio input port description, 1 dai pin description – Cirrus Logic CS4953xx User Manual
Page 57: Chapter 5. digital audio input interface -1, 1 digital audio input port description -1, 1 dai pin description -1, Table 5-1. digital audio input port -1, Chapter 5 digital audio input interface
5-1
Copyright 2010 Cirrus Logic, Inc.
DS732UM10
Digital Audio Input Port Description
CS4953xx Hardware User’s Manual
Chapter 5
Digital Audio Input Interface
CS4953xx supports a wide variety of audio data formats through various input and output ports. Hardware
availability is entirely dependent on whether the software application code being used supports the
required mode. This data sheet presents most of the modes available with the CS4953xx hardware.
However, not all of the modes are available with any particular piece of application code. The Application
Code User’s Guide for the particular code being used should be referenced to determine if a particular
mode is supported. In addition, if a particular mode is desired that is not presented, please contact your
sales representative regarding its availability.
5.1 Digital Audio Input Port Description
The CS4953xx Digital Audio Input ports (DAI1 and DAI2) are designed to provide five digital audio input
pins (10 channels total) that can be configured to load audio samples in a number of formats, or accept
multiple stereo channels on a single input port.
DAI features include:
•
Five digital audio input pins capable of supporting many audio formats
•
Two independent input clock domains (DAI1_SCLK/DAI1_LRCLK or DAI2_SCLK/DAI2_LRCLK)
•
Up to 32-bit data widths
•
Sample rates up to 192 kHz
•
Two simultaneous serial compressed audio data inputs in IEC61937 format for dual-decode support
•
2, 4, or 6 channels on a single pin (DAI_DATAx)
•
Simultaneous 8-channel PCM for multichannel DVD audio and compressed audio
5.1.1 DAI Pin Description
The digital audio input port (DAI) on CS4953xx, is used for both compressed and PCM digital audio data
input.
shows the mnemonic and pin description of the pins associated with the DAI port on
CS4953xx.
Table 5-1. Digital Audio Input Port
Pin Name
Pin Description
LQFP-144
Pin #
LQFP-128
Pin #
Pin Type
DAI1_LRCLK
Sample Rate Clock 1 PCM Audio Input
Sample Rate (LeftRight) Clock
DAI1_LRCLK is the sample rate input
clock for the serial PCM audio data on
DAI_DATA[3:0].
138
30
Input
DAI1_SCLK
Bit Clock 1 PCM Audio Input Bit Clock
DAI1_SCLK is the bit clock input for
the serial PCM audio data on
DAI_DATA[3:0]..
137
29
Input