Table 199. Audio-Frequency Precision Using Standard 8 Mhz Hse - ST STM32G0 1 Series Reference Manual

Serial peripheral interface / integrated interchip sound (SPI/I2S)
Note: Note that I2SDIV must be strictly higher than 1.
Table 199
Note: Other configurations are possible that allow optimum clock precision.
SYSCLK
(MHz)
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
48
1178/1390
provides example precision values for different clock configurations.

Table 199. Audio-frequency precision using standard 8 MHz HSE

Data
I2SDIV
length
16 8
32 4
16 15
32 8
16 17
32 8
16 23
32 11
16 34
32 17
16 47
32 23
16 68
32 34
16 94
32 47
16 2
32 2
16 2
32 2
16 3
32 3
16 4
32 4
16 6
32 6
16 8
32 8
16 11
32 11
Target fs
I2SODD MCLK
0 No
0 No
1 No
0 No
0 No
1 No
1 No
1 No
0 No
0 No
0 No
1 No
0 No
0 No
0 No
0 No
0 Yes
0 Yes
0 Yes
0 Yes
0 Yes
0 Yes
1 Yes
1 Yes
0 Yes
0 Yes
1 Yes
1 Yes
1 Yes
1 Yes
RM0444 Rev 5
Real fs (kHz)
(Hz)
96000 93750
96000 93750
48000 48387.0968
48000 46875
44100 44117.647
44100 44117.647
32000 31914.8936
32000 32608.696
22050 22058.8235
22050 22058.8235
16000 15957.4468
16000 15957.447
11025 11029.4118
11025 11029.412
8000 7978.7234
8000 7978.7234
48000 46875
48000 46875
44100 46875
44100 46875
32000 31250
32000 31250
22050 20833.333
22050 20833.333
16000 15625
16000 15625
11025 11029.4118
11025 11029.4118
8000 8152.17391
8000 8152.17391
RM0444
(1)
Error
2.3438%
2.3438%
0.8065%
2.3438%
0.0400%
0.0400%
0.2660%
1.9022%
0.0400%
0.0400%
0.2660%
0.2660%
0.0400%
0.0400%
0.2660%
0.2660%
2.3430%
2.3430%
6.2925%
6.2925%
2.3438%
2.3438%
5.5178%
5.5178%
2.3438%
2.3438%
0.0400%
0.0400%
1.9022%
1.9022%