Huawei MediaPad 10 fhd Maintenance Manual page 24

MediaPad10 FHD Maintenance Manual
BUCK2: 1.1 V 1400 mA for the GPU, supporting AVS adjustment.
BUCK3: 1.1 V 1100 mA for peripherals.
BUCK4: 1.2 V or 1.8 V 1000 mA for LPDDR2 or AP I/O.
BUCK5: 1.8 V 500 mA for low-voltage LDO.
BUCK0 and BUCK1 are connected in parallel.
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21 external LDO linear voltage regulators and four internal LDO linear voltage
regulators
LDO0: 2.85 V @ 300 mA for MLC NAND/eMMC
LDO1: 1.8 V @ 50 mA for 26 MHz clock oscillation circuit
LDO2: 1.1 V @ 150 mA for the system area, Bluetooth subsystem, and digital PLL (The
system in standby mode does not need to be powered off)
LDO3: 1.2 V @ 350 mA for the DDR PHY I/O to be powered off or the HSIC PHY 1.2
V (Power-off is required)
LDO4: 2.5 V @ 250 mA for MIPI/USB2.0/PCIe/T Sensor/PLL 2.5 V analog power
(Power-off is required)
LDO5: 1.8 V @ 300 mA for Hi3620 & Hi6421V200 1.8V I/O, LP DDR2, SLC NAND,
or Bluetooth&GPS RFIC
LDO6: 2.6 V @ 300 mA for Hi3620 2.6 V I/O and small peripherals
LDO7: 2.6 V @ 50 mA for Hi3620 microSD card slot I/O (Dynamic switching between
1.8 V and 2.6 V is needed)
LDO8: 3.3 V @ 200 mA for USB PHY
LDO9: 2.6 V @ 200 mA for eFuse power supply (Power-off is required)
LDO10: 2.85 V @ 150 mA for Bluetooth RF&PA; reserved
LDO11: 2.85 V @ 150 mA for GPS RF&PA; reserved
LDO12: 2.85 V @ 500 mA for the microSD card
LDO13: 2.85 V @ 300 mA for CMMB
LDO14: 2.85 V @ 150 mA for Wi-Fi I/O
LDO15: 3.3 V @ 300 mA for Wi-Fi core&PA
LDO16: 2.85 V @ 150 mA for LCD I/O
LDO17: 2.85 V @ 150 mA for LCD Analog
LDO18: 2.85 V @ 300 mA for Camera I/O and the input of the internal core power
regulator
LDO19: 2.85 V @ 300 mA for LCD Camera Analog
LDO20: 2.85 V @ 300 mA for LCD Camera VCM
LDO_Audio: 3.3 V @ 300 mA for Audio & HKADC
LDO_PMUA: 3.15 V @ 10 mA for PMU Analog
LDO_PMUD: 1.8 V @ 10 mA for PMU Digital
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Real-time clock (RTC) with the alarm clock function
The Hi6421V200 chip integrates a 32.768 kHz crystal oscillator and supports three
channels of clock buffer output independently controlled.
The RTC serves as the reference time and date benchmark of the system.
The RTC supports the alarm clock function and scheduled power-on.
The RTC supports power supply through a backup coin battery.
2012-10-09 Huawei Confidential
INTERNAL
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