上电时序图 12~48ms 4s Tocv 40ms LDO_PMUA 1.8上电，并控制BUCK_BOOST_EN上电 5ms MIC/MBIAS 3.0/PMUH 480us 480us 1.95V电源 平面 1.2V平面 Hi6403数字1.2V 38.4MHZ OSC 1.7V 480us 完成32k时钟切换 5ms 6ms 系统区0.75V from VBAT_SYS 480us 480us 外设区调压区 0.75V Modem 0.75V V765默认不开 V765默认不开 V765默认不开 V765默认不开 V765默认不开 V765默认不开 V765默认不开 480us 480us Modem_Mem 0.75V 数字1.8V IO 480us 480us X_Sensor WIFI/NFC IO X_Sensor AVDD 2.8V 1.1V电源平面 240us 480us 240us 系统区0.75V from 1.1 BUCK1 外设定压区 0.75V LPDDR4X 0.6V ABB 模拟0.85V ABB 模拟 1.8V 480us 480us 240us 240us 1.8V 模拟PHY&USB3.0和XOADC和XO基准 240us 240us SOC UFS IO 1.2V UFS PHY和SOC PLL 1.8V 240us Hi6403 1.8模拟 480us 240us PA_BIAS &USB 2.0V UFS 器件 3.0V LDO_BUF 1.8V 240us 5ms 返回目录 PWR_HOLD SYS_RST_N SOC内部POR_RST PWRON_N LDO_PMUA LDO35 BUCK3 BUCK2 LDO26 LDO0_1 BUCK0 BUCK4 BUCK6 BUCK8 LDO18 LDO24 BUCK1 LDO0_2 LDO30 BUCK7 LDO6 LDO7 LDO5/LDO27 LDO36 LDO29 LDO8 LDO23 LDO15 LDO_BUF SYS_CLK_19M2 ABB_CLK_38M4 CLK32_SYS 返回目录 全景图 TOP面 3 BOTTOM面 1 2 6、开机上电时序图 量测点对应 序号 电压 实物点测图 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 C1202 1.8V C1101 1.8V C1205 1.8V TP3035 1.8V C1039 1.8V C1024 2.9V C1145 1.95V C1143 1.2V 1 16 1.1V 0.75V 1.8V 1.8V 1.8V 1.8V 0.75V 0.6V 12 13 1 5 3 17 18 10 0.75V 1.8V 14 0.85V 19 0.75V 11 1.95V 7 1.8V 2.95V 1.8V 27 22 1.8V 20 21 23 1.2V 25 1.8V 24 1.8V 28 1.8V 1.8V 2.9V 0.9V 0.9V C1034 1.35V→1.7V 3.2V 2 6 30 29 9 1.35-1.75V 1.2V 8 2.8V 26 15 2 1.76V 4 C1048 0.75V C1147 0.75 C1151 0.75 C1155 1.8V C1138 1.8V C1020 2.8V C2719 1.1V C1049 0.75V C1153 0.6V C1050 0.85V C1030 1.8V C1028 1.8V C1035 1.8V C1038 1.2V C1037 1.8V C1031 1.8V C1019 3.2V C1016 2.95V C1042 1.8V R2105 0.9V C1208 0.9V 信号脚 PMU_PWR_HOLD (PWR_HOLD) PMU_RST_OUT_N (SYS_RST_N) SOC_RST_PMU_N (POR_RST) PWRON_N VOUT_PMUA_1V8 (LDO_PMUA) VOUT35_CODEC_2V9 (LDO35) VBUCK3_1V95 (BUCK3) VBUCK2_1V2 (BUCK2) VOUT26_1V7/1V35 (LDO26) VOUT0_0V75 (LDO0_1) VBUCK4_0V75 (BUCK4) VBUCK6_0V75 (BUCK6) VBUCK8_1V8 (BUCK8) VOUT18_1V8 (LDO18) VOUT24_2V8 (LDO24) VBUCK1_1V1 (BUCK1) VOUT30_0V75 (LDO30) VBUCK7_0V6 (BUCK7) VOUT6_0V85 (LDO6) VOUT7_1V8 (LDO7) VOUT5_1V8 (LDO5) VOUT27_1V8 (LDO27) VOUT36_1V2 (LDO36) VOUT29_1V8 (LDO29) VOUT8_1V8 (LDO8) VOUT23_3V2 (LDO23) VOUT15_2V95 (LDO15) LDO_BUFF_1V8 (LDO_BUF) SYS_CLK (SYS_CLK_19M2) ABB_CLK_38M4 2018/12/3 第1页，共1页