Cirrus Logic CS4970x4 - Manual (Page 68)

3-2 Copyright 2013 Cirrus Logic, Inc. DS810UM6
Digital Audio Input Port Description
CS4953x4/CS4970x4 System Designer’s Guide
3.2.2 Supported DAI Functional Blocks
The CS4953x4/CS4970x4 DAI has many functional blocks for realizing various audio system
configurations. The use of these functions is dependent on the firmware currently available on the
CS4953x4/CS4970x4.
Figure 3-1 shows the functional block diagram of the features currently supported
with the CS4953x4/CS4970x4 DAI.
DAI1_DATA0
PCM or Compressed Audio Input Data 0 PCM
Audio Input Data 0
Serial data input that can accept PCM audio data
that is synchronous to DAI_SCLK1/DAI_LRCLK1
or DAO1_SCLK/DAO1_LRCLK..
135 27 Input
DAI1_DATA1 PCM or Compressed HDAudio Input Data 1 134 26 Input
DAI1_DATA2 PCM or Compressed HD Audio Input Data 2 132 24 Input
DAI1_DATA3 PCM or Compressed HD Audio Input Data 3 131 23 Input
DAI2_LRCLK
Sample Rate Clock 2 PCM Audio Input Sample
Rate (LeftRight) Clock
DAI2_LRCLK is the sample rate input clock for
the serial PCM audio data on DAI2_DATA.
140 32 Input
DAI2_SCLK
Bit Clock 2 PCM Audio Input Bit Clock
DAI2_SCLK is the bit clock input for the serial
PCM audio data on DAI2_DATA.
141 33 Input
DAI2_DATA or
DAI1_DATA4
PCM or Compressed Audio Input Data PCM
Audio Input Data
DAI2_DATA is the PCM audio data input
synchronous to DAI2_SCLK/DAI2_LRCLK
142 34 Input
Table 3-1. Digital Audio Input Port (Continued)
Pin Name Pin Description
LQFP-144
Pin #
LQFP-128
Pin #
Pin Type
DAI1_DATA0
D
M
A
to Per
iphera
l Bus
DAI_DATA0
DAI1_DATA1
DAI_DATA1
DAI1_DATA2
DAI_DATA2
DAI1_DATA3
DAI_DATA3
DAI2_DATA
or
DAI1_DATA4
DAI_DATA4
Compressed Data
Unit
DAI_LRCLK1
DAI_SCLK1
DAI_LRCLK2
DAI_SCLK2