2 serial audio interface formats, Figure 11. right-justified serial audio formats – Cirrus Logic CS42428 User Manual
Page 27
DS605F2
27
CS42428
4.5.2
Serial Audio Interface Formats
The DAC_SP and ADC_SP digital audio serial ports support five formats with varying bit depths from 16
to 24 as shown in
Figures
. These formats are selected using the configuration bits in the registers,
“Functional Mode (address 03h)” on page 43
and
“Interface Formats (address 04h)” on page 45
. For the
diagrams below, Single-Speed Mode is equivalent to Fs = 32, 44.1, 48 kHz; Double-Speed Mode is for
Fs = 64, 88.2, 96 kHz; and Quad-Speed Mode is for Fs = 176.4, 196 kHz.
Left Channel
R ight C hannel
6
5
4
3
2
1
0
9
8
7
15 1 4 13 12 11 10
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
DAC_SDINx
ADC_SDOUT
DAC_LRCK
ADC_LRCK
DAC_SCLK
ADC_SCLK
Figure 11. Right-Justified Serial Audio Formats
Right-Justified Mode, Data Valid on Rising Edge of SCLK
Bits/Sample
SCLK Rate(s)
Notes
Master
Slave
16
64 Fs
48, 64, 128 Fs
Single-Speed Mode
64 Fs
64 Fs
Double-Speed Mode
64 Fs
64 Fs
Quad-Speed Mode
24
64, 128, 256 Fs
64, 128 Fs
Single-Speed Mode
64 Fs
64 Fs
Double-Speed Mode
64 Fs
64 Fs
Quad-Speed Mode