Cirrus Logic CS485xx User Manual
Page 72
Digital Audio Output Port Description
CS485xx Hardware User’s Manual
DS734UM7
Copyright 2009 Cirrus Logic, Inc.
6-6
Please refer to
Table 6-4
,
Table 6-5
, and
Table 6-6
for examples of the clocking directions for the settings
contained in
Table 6-2
.
Table 6-4
shows values and messages for the output DAO_SCLK/LRCLK frequency configuration
parameter.
Table 6-3. DAO1 & DAO2 Clocking Relationship Configuration (Parameter B)
B
Value
DAO1 & DAO2 Clocking Relationship Hex Message
0
a
a. This command is required because the DAO2 clocks are not
bonded out.
DAO2 dependent on DAO1 clocks
0x8140001B
0x00002000
Table 6-4. Output DAO_SCLK/LRCLK Configuration (Parameter C)
C Value
DAO_SCLK Frequency
Hex Message
0 (default)
DAO_MCLK = 256 FS
DAO_SCLK = DAO_MCLK / 4 = 64 FS
DAO_LRCLK = DAO_SCLK / 64 = FS
0x8100002D
0x00007711
0x8100002E
0x00007711
0x8180001C
0xFFFFFF8F
0x8140001C
0x00000020
1
DAO_MCLK = 256 FS
DAO_SCLK = DAO_MCLK / 2 = 128 FS
DAO_LRCLK = DAO_SCLK / 128 = FS
0x8100002D
0x00017701
0x8100002E
0x00017701
0x8180001C
0xFFFFFF8F
0x8140001C
0x00000040
2
DAO_MCLK = 256 FS
DAO_SCLK = DAO_MCLK / 1 = 256 FS
DAO_LRCLK = DAO_SCLK / 256 = FS
0x8100002D
0x00037700
0x8100002E
0x00037700
0x8180001C
0xFFFFFF8F
0x8140001C
0x00000060
3
DAO_MCLK = 128 FS
DAO_SCLK = DAO_MCLK / 2 = 64 FS
DAO_LRCLK = DAO_SCLK / 64 = FS
0x8100002D
0x00007701
0x8100002E
0x00007701
0x8180001C
0xFFFFFF8F
0x8140001C
0x00000020