STM32F215RET6 查看數據表（PDF） - STMicroelectronics

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STM32F215RET6

ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM, crypto, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

STMicroelectronics 

STM32F21xxx

Application block diagrams

Figure 91. Master clock (MCK) used to drive the external audio DAC

I2S_CK

/I2SD

I2S controller

2,3,4,..,129

/8

/(2 x 16)

for 16-bit stereo

FSAUDIO

I2S_MCK = 256 × FSAUDIO

= 11.2896 MHz for FSAUDIO = 44.1 kHz

= 12.2880 MHz for FSAUDIO = 48.0 kHz

I2S_SCK(1) = I2S_MCK/8 for 16-bit stereo

= I2S_MCK/4 for 32-bit stereo

/4

/(2 x 32)

for 32-bit stereo

FSAUDIO

1. I2S_SCK is the I2S serial clock to the external audio DAC (not to be confused with I2S_CK).

Figure 92. Master clock (MCK) not used to drive the external audio DAC

ai16042

I2S controller

I2SCOM_CK

/I2SD

/(2 x 16)

for 16-bit stereo

/(2 x 32)

for 32-bit stereo

FSAUDIO

FSAUDIO

I2S_SCK(1)

ai16042

1. I2S_SCK is the I2S serial clock to the external audio DAC (not to be confused with I2S_CK).

Doc ID 17050 Rev 8

159/173

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