6.4
FUNCTIONAL MODE (ADDRESS 03H)
7
6
5
4
3
2
1
0
DAC_FM1
DAC_FM0
ADC_FM1
ADC_FM0
MFreq2
MFreq1
MFreq0
Reserved
6.4.1 DAC FUNCTIONAL MODE (DAC_FM[1:0])
Default = 11
Master Mode
00 - Single-Speed Mode (4 to 50 kHz sample rates)
01 - Double-Speed Mode (50 to 100 kHz sample rates)
10 - Quad-Speed Mode (100 to 200 kHz sample rates)
Slave Mode
11 - (Auto-detect sample rates)
Function:
Selects the required range of sample rates for the DAC serial port.
6.4.2 ADC FUNCTIONAL MODE (ADC_FM[1:0])
Default = 11
Master Mode
00 - Single-Speed Mode (4 to 50 kHz sample rates)
01 - Double-Speed Mode (50 to 100 kHz sample rates)
10 - Quad-Speed Mode (100 to 200 kHz sample rates)
Slave Mode
11 - (Auto-detect sample rates)
Function:
Selects the required range of sample rates for the ADC serial port.
6.4.3 MCLK FREQUENCY (MFREQ[2:0])
Default = 000
Function:
Sets the appropriate frequency for the supplied MCLK. For TDM and OLM #2 operation,
ADC/DAC_SCLK must equal 256Fs. For OLM #1 operation, ADC/DAC_SCLK must equal 128Fs.
MCLK can be equal to or greater than the higher frequency of ADC_SCLK or DAC_SCLK.
Ratio (xFs)
MFreq2 MFreq1 MFreq0
Description
SSM
256
384
512
768
DSM
128
192
256
384
512
QSM
64
96
128
192
256
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
1.0290 MHz to 12.8000 MHz
1.5360 MHz to 19.2000 MHz
2.0480 MHz to 25.6000 MHz
3.0720 MHz to 38.4000 MHz
4.0960 MHz to 51.2000 MHz
1024
Table 10. MCLK Frequency Settings for I²S, Left and Right Justified Interface Formats
46
DS648PP2
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