STM32F21xxx
List of figures
Figure 87.
Figure 88.
Figure 89.
Figure 90.
Figure 91.
Figure 92.
Figure 93.
Figure 94.
Figure 95.
in high-speed mode with external PHY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Complete audio player solution 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Complete audio player solution 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Audio player solution using PLL, PLLI2S, USB and 1 crystal . . . . . . . . . . . . . . . . . . . . . . 158
Audio PLL (PLLI2S) providing accurate I2S clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Master clock (MCK) used to drive the external audio DAC. . . . . . . . . . . . . . . . . . . . . . . . 159
Master clock (MCK) not used to drive the external audio DAC. . . . . . . . . . . . . . . . . . . . . 159
MII mode using a 25 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
RMII with a 50 MHz oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
RMII with a 25 MHz crystal and PHY with PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Doc ID 17050 Rev 8
9/173