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STA321 数据表(PDF) 12 Page - STMicroelectronics |
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STA321 数据表(HTML) 12 Page - STMicroelectronics |
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12 / 157 page  Pin description STA321 12/157 Doc ID 15351 Rev 3 52 - XTO Out (digital), 1.8 V Crystal output 53 - XTI In (digital), 1.8 V Crystal input or master clock input 54 - MCLK In (digital), schmitt tr Master clock input 3.3-V compatible, schmitt input 55 - SDATAI2 In (digital) Input serial audio interface data 56 - SDATAI1 In (digital) Input serial audio interface data 57 - SDATAO2 Out (digital) Output serial audio interface data 58 - SDATAO1 Out (digital) Output serial audio interface data 59 - LRCLKI2 In/Out (digital) Input serial audio interface L/R-clock 60 - LRCLKI1 In/Out (digital) Input serial audio interface L/R-clock 61 - LRCLKO In/Out (digital) Output serial audio interface L/R-clock (volume DOWN when I2CDIS=1) 62 - BICLKI2 In/Out (digital) Input serial audio interface bit clock 63 - BICLKI1 In/Out (digital) Input serial audio interface bit clock 64 - BICLKO In/Out (digital) Output serial audio interface bit clock (volume UP when I2CDIS=1) Table 3. Power supply pin list Number Name Type Description 2 VCC1 Supply CMOS bridge channel 1 supply 4 GND1 Ground CMOS bridge channel 1 ground 5 GND2 Ground CMOS bridge channel 2 ground 7 VCC2 Supply CMOS bridge channel 2 supply 8 VCC3 Supply CMOS bridge channel 3 supply 10 GND3 Ground CMOS bridge channel 3 ground 15 GND33 Ground CMOS bridge level shifter ground 16 VCC33 Supply CMOS bridge level shifter supply 20 DGND1 Ground Digital ground 22 VDD_REG1 Supply DC regulator unit supply 23 VDDIO1 Supply 3.3-V IO supply 25 AGND Ground ADC analog ground 28 AVDD Supply ADC analog supply 45 DGND2 Ground Digital ground 46 VDD_REG2 Supply DC regulator unit supply 47 VDDIO2 Supply 3.3-V IO supply 49 PVDD Supply PLL analog supply 50 PGND Ground PLL analog ground Table 2. Pin list (continued) Pin Pull Name Type Description |
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