CS42526 Datasheet, PDF (29/90 Pages) Cirrus Logic – 114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver

CS42526
4.6.2 Serial Audio Interface Formats
The CODEC_SP and SAI_SP digital audio serial ports support 5 formats with varying bit depths from 16
to 24 as shown in Figures 10 to 14. These formats are selected using the configuration bits in the registers,
“Functional Mode (address 03h)” on page 48 and “Interface Formats (address 04h)” on page 49. 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.
CX_LRCK
SAI_LRCK
CX_SCLK
SAI_SCLK
CX_SDINx
CX_SDOUT
SAI_SDOUT
Left Channel
MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB
Right Channel
MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB
I2S Mode, Data Valid on Rising Edge of SCLK
Bits/Sample
SCLK Rate(s)
Master
Slave
16
64
48, 64, 128 Fs
64 Fs
64 Fs
64 Fs
64 Fs
18 to 24
64, 128, 256 Fs
48, 64, 128 Fs
64 Fs
48, 64 Fs
64 Fs
48, 64 Fs
Notes
single-speed mode
double-speed mode
quad-speed mode
single-speed mode
double-speed mode
quad-speed mode
Figure 10. I²S Serial Audio Formats
DS585PP5
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