Table 183. Audio-Frequency Precision Using Standard 8 Mhz Hse - ST STM32F101 series Reference Manual

RM0008
Table 183,
configurations.
Note: Other configurations are possible that allow optimum clock precision.
Table 183. Audio-frequency precision using standard 8 MHz HSE (high-density and XL-density
I2S_DIV
SYSCLK
(MHz)
16-bit 32-bit
72 11
72 23
72 25
72 35
72 51
72 70
72 102
72 140
72 2
72 3
72 3
72 9
72 6
72 9
72 13
72 17
Table 184 and Table 185
I2S_ODD
16-bit 32-bit
6 1 0
11 1 1
13 1 0
17 0 1
25 0 1
35 1 0
51 0 0
70 1 1
2 0 0
3 0 0
3 0 0
9 0 0
6 1 1
9 0 0
13 0 0
17 1 1
DocID13902 Rev 15
provide example precision values for different clock
devices only)
Target f
S
MCLK
(Hz)
16-bit
No 96000 97826.09
No 48000 47872.34
No 44100 44117.65
No 32000 32142.86
No 22050 22058.82
No 16000 15675.75
No 11025 11029.41
No 8000 8007.11
Yes 96000 70312.15
Yes 48000 46875
Yes 44100 46875
Yes 32000 31250
Yes 22050 21634.61
Yes 16000 15625
Yes 11025 10817.30
Yes 8000 8035.71
Serial peripheral interface (SPI)
Real f (KHz)
S
32-bit 16-bit
93750 1.90%
48913.04 0.27%
43269.23 0.04%
32142.86 0.44%
22058.82 0.04%
16071.43 0.27%
11029.41 0.04%
7978.72 0.09%
70312.15 26.76%
46875 2.34%
46875 6.29%
31250 2.34%
21634.61 1.88%
15625 2.34%
10817.30 1.88%
8035.71 0.45%
Error
32-bit
2.34%
1.90%
1.88%
0.44%
0.04%
0.45%
0.04%
0.27%
26.76%
2.34%
6.29%
2.34%
1.88%
2.34%
1.88%
0.45%
724/1128
742