2085 pin function 2085 pin function ATJ2085 pin function 1. General purpose input/output 2. Reset - SCU H System reset input (If there is a power switch, you don’t need to connect the reset button. If there is no power switch, you must connect this reset button) 3. VCC PWR // Digital power 4. Ground PWR // Digital ground 5. USBD- A/ H Universal serial bus data minus 6. USBD+ A/ H Universal serial bus data plus 7. PAVCC PWR // Power supply for power amplifier (two bypass capacitors are 47 or 100 uF and 0.1 uF) 8. AOUTR Audio R output 9. AOUTL Audio L output 10. PAGND PWR // Power amplifier ground 11. VRDA Bypass capacitor (0.47 uF-1UF) 12. MICIN Recording preamplifier input through 224 capacitor (0.8 13. VMIC power supply for preamplifier, 2.2 V output, through 2.2K or 4.7K resistor 14. FMINL FM audio L input through 104-105 capacitor 15. FMINR FM audio R input through 104-105 capacitor 16. AGND PWR audio ground 17. AVCC PWR audio power supply through 104 capacitor to ground 18. VREFI voltage reference input (1.5 V) 19. AVDD PWR output is regulated at 1.5V through 152 and input to pin 18 20. VDDIO PWR power output (connected to VDD) 21. VP PWR (connected when there are 2 power supplies, the other is connected to VCC) 22. LRADC digital converter input, 0.8--2.2 V, 8 Bit digital converter (empty) 23. HOSCI high frequency crystal oscillator input 24. HOSCO High frequency crystal oscillator output 25. First BATSEL equipment group selection. L: one equipment group, H: two power supplies 26. First DCDIS/L DC-DC control. H: DC-DC. L: DC permission-DC. ……
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