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STM32F215RG 데이터시트(PDF) 158 Page - STMicroelectronics |
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STM32F215RG 데이터시트(HTML) 158 Page - STMicroelectronics |
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158 / 173 page ![]() Application block diagrams STM32F21xxx 158/173 Doc ID 17050 Rev 8 Figure 89. Audio player solution using PLL, PLLI2S, USB and 1 crystal Figure 90. Audio PLL (PLLI2S) providing accurate I2S clock OTG 48 MHz PHY XTAL 25 MHz or 14.7456 MHz ai18412b I2S <0.04% accuracy) DAC + Audio ampli MCLK out SCLK MCO1/ MCO2 PLLI2S x N2 PLL x N1 Div by M Div by P Div by Q up to 120 MHz Cortex-M3 core up to 120 MHz Div by R MCLK in MCO1PRE MCO2PRE I2S CTL I2S_MCK = 256 × FSAUDIO 11.2896 MHz for 44.1 kHz 12.2880 MHz for 48.0 kHz I2S_MCK PLLI2S /M M=1,2,3,..,64 1 MHz 192 to 432 MHz N=192,194,..,432 I2SCOM_CK PhaseC VCO /N /R CLKIN Phase lock detector R=2,3,4,5,6,7 I2SD=2,3,4.. 129 ai16041b |
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