Pmu Hi6421; Figure 2-5 Pinouts Of The Pop Lpddr2 Chip - Huawei MediaPad 10 fhd Maintenance Manual

MediaPad10 FHD Maintenance Manual
Figure 2-5 Pin assignment of the POP LPDDR2 chip

2.3 PMU Hi6421

The Hi6421V200 chip is an important component of Hisilicon K3 application processor
solution, which is a semiconductor solution for mobile phones. It is an integrated circuit that
provides power management, audio processing, and diversified interfaces. Its functions are
described as follows:
Power Supply
BUCK0 and BUCK1 serve as the primary power of the quad core A9, and output 1.1 V by
default. The maximum parallel output current is 4000 mA. BUCK0 and BUCK1 are switched
on or off by controlling the external hardwire signal BUCK01_EN. The output voltage is
adjusted through SPI interfaces to meet the system AVS policy, so that the power consumption
of the system is minimized on the precondition of guaranteed system performance.
2012-10-09 Huawei Confidential
INTERNAL
Page 20 of 78