Cirrus Logic CS4953xx - Manual (Page 70)

Digital Audio Output Port Description
CS4953xx Hardware User’s Manual
DS732UM10 Copyright 2010 Cirrus Logic, Inc 7-4
7.1.3.3 One-line Data Mode Format (Multichannel)
The CS4953xx is capable of multiplexing all digital audio outputs on one line, as illustrated in Figure 7-4 .
This mode is available only through special request. Please contact your local Cirrus representative for
further details.
Figure 7-4. One-line Data Mode Digital Audio Formats
7.1.4 DAO Hardware Configuration
The DAO naming convention is as follows:
OUTPUT A B C D E F
where the parameters are defined as:
• A - DAO Clock Mode (Master/Slave for DAO_LRCLK and DAO_SCLK)
• B - DAO1/DAO2 Clock Relationship
• C - DAO_MCLK, DAO_SCLK, DAO_LRCLK Frequency Ratio
• D - Data Format (I2S, Left Justified)
• E - DAO_LRCLK Polarity
• F - DAO_SCLK Polarity
• G - Output Channel Configuration
Table 7-2 , Table 7-3 , Table 7-4 , Table 7-5 , Table 7-6 , and Table 7-7 show the different values for each
parameter as well as the hex message that needs to be sent to configure the port. When creating the
hardware configuration message, only one hex message should be sent per parameter.
Note: All DAO hardware config messages must be sent to DSPB. For more details on sending
messages to DSP B refer to AN288, section 2.1.4
DA O _LRC LK
DA O _SC LK
DA O _DATA M S B L S B
M C lo c k s
P e r C h a n n e l
M S B L S B
M C lo c k s
P e r C h a n ne l
M C lo c k s
P e r C h a n n e l
M S B L S B
M C lo c k s
P e r C h a n n e l
M S B L S B
M C lo c k s
P e r C h a n n e l
M S B L S B
M C lo c k s
P e r C h a n n e l
M S B L S B M S B