103231 U1 RT9167-3.3V 3 C1 1 1uF D 2 4 C5 2.2uF VIN CE GND VOUT BYP 5 C2 2 3V3 3V3 +1V8 +1V8 3 +1V8 4 VBAT C7 10u C8 15pF C9 0.1uF C10 0.1uF D 1uF 32 38 47 11 31 33 10 14 8 9 37 U3 VDD_RF VDD_DIG VDD_LO VDD_33 VDD_33 VDD_33 VDD_18 VDD_18 VDD_18 VDD_ANA LDO_OUT VDD_18 LDO_IN 5 1 BT POWER 2.8-3.6V 可由MTK BB端提供 +1V8 C C11 L2 22nH 3 8 7 U4 NC GND DC GND GND 2 Balanced 4 7 RFB AS3850 GND 0 6 6 RFA Port_A7 Port_A6 Port_A5 Port_A4 Port_A2 Port_A1 Port_A0 Port_B5 PCM_IN PCM_OUT PCM_CLK PCM_SYNC 44 45 46 48 3 4 2 39 27 28 30 29 CLK_REQ E-INT 3V3 3V3 C PCM_IN PCM_OUT PCM_CLK PCM_SYNC 50 ohm ……