CS4350_07 Datasheet, PDF (24/41 Pages) Cirrus Logic – 192 kHz Stereo DAC with Integrated PLL

5. STAND-ALONE OPERATION
CS4350
5.1 Serial Port Format Selection
The desired serial audio format is selected with the DIF2, DIF1 and DIF0 pins. For an explanation of the
required relationship between the LRCK, SCLK and SDIN, see Figures 11-13. For all formats, SDIN is valid
on the rising edge of SCLK. TDM Mode requires the selection of which stereo pair time “slot” is used to out-
put data as shown in Table 2 and Figure 15.
DIF2
0
0
0
0
1
1
1
1
DIF1
0
0
1
1
0
0
1
1
DIF0
DESCRIPTION
0 Left-Justified, up to 24-bit data
1 I²S, up to 24-bit data
0 Right-Justified, 16-bit data
1 Right-Justified, 24-bit data
0 TDM slot 0
1 TDM slot 1
0 TDM slot 2
1 TDM slot 3
FORMAT
0
1
2
3
4
5
6
7
Table 2. Digital Interface Format - Stand-Alone Mode
FIGURE
12
11
13
13
15
15
15
15
5.2 De-Emphasis Control
When pulled to VLC, the DEM pin activates the 44.1 kHz de-emphasis filter. When pulled to GND, the DEM
pin turns off the de-emphasis filter.
5.3 Popguard Transient Control
In Stand-Alone Mode, Popguard is enabled by default. Popguard can be defeated in Stand-Alone Mode by
placing a 47 kΩ resistor between RMCK and VLS.
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