CS4228A-KS Cirrus Logic, CS4228A-KS Datasheet - Page 15

• Manufacturer Part Number: CS4228A-KS
• Description: 24-Bit/ 96 kHz Surround Sound Codec
• Manufacturer: Cirrus Logic

SDIN1, SDIN2, and SDIN3 are the data input pins.
SDOUT, the data output pin, carries data from the
two 24-bit ADC’s. The serial audio port may also
be operated in One Line Data Mode in which all 6
channels of DAC data is input on SDIN1 and the
stereo ADC data is output on SDOUT. Table 1 out-
lines the serial port input to DAC channel alloca-
tions.
DS511PP1
DAC Inputs
SDIN1
SDIN2
SDIN3
SDIN1/2/3
Table 1. Serial Audio Port Input Channel Allocations
SDOUT
LRCK
SCLK
right channel
right channel
right channel
left channel
left channel
left channel
I2S Mode, Data Valid on Rising Edge of SCLK
Bits/Sample
16
18 to 24
single line
MSB -1 -2 -3 -4 -5
DAC #1
DAC #2
All 6 DAC channels (BRM)
DAC #3
DAC #4
DAC #5
DAC #6
Left Channel
+5 +4
SCLK Rate(s)
32, 48, 64, 128 Fs
32, 64 Fs
48, 64, 128 Fs
64 Fs
+3 +2 +1 LSB
Figure 9. I
2
S Serial Audio Formats
Notes
BRM, 48 Fs available in slave mode only
HRM
BRM, 48 Fs available in slave mode only
HRM
3.6.2 Serial Audio Interface Formats
The digital audio port supports 6 formats, shown in
Figures 9, 10, 11 and 12. These formats are selected
using the DDF2:0 bits in the Serial Port Mode reg-
ister.
In One Line Data Mode, all 6 DAC channels are in-
put on SDIN1. One Line Data Mode is only avail-
able in BRM. See Figure 12 for channel
allocations.
MSB -1 -2 -3 -4
+5 +4
Right Channel
+3 +2 +1 LSB
CS4228A
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