Voltage

The voltage is provided by the power supply. Power is supplied from a lithium-ion battery for CEM/PCH/PTEL, and from a 5V 2A AC adapter for DEM/PDEL/VTE.

The voltage is controlled by the Syscon and is automatically adjusted according to the system clock frequency.

Categorizes

The system also categorizes voltages into four types, called VDD.

Name	Description	Who settings this
DD1/VDD	General Purpose Processor. IFTU, DMAC, Internal Bus, Camera Bus, SPM 32KiB/128KiB.	scePowerSetSysClockFrequency (SysTimer) scePowerSetDmac5ClockFrequency scePowerSetBusClockFrequency scePowerSetCameraBusClockFrequency
DD2/VDDA	ARM Core, L2 Cache.	scePowerSetArmClockFrequency
DD3/VDDC	Codec Engine, AVC Decoder.	scePowerSetVipClockFrequency scePowerSetVeneziaClockFrequency
DD4/VDDG	GPU Core.	scePowerSetGpuClockFrequencyInternal scePowerSetGpuXbarClockFrequency scePowerSetCompatClockFrequency

The voltage is automatically adjusted by the system, but you can also set the voltage manually by calling sceSysconCtrlVoltageForDriver (but be careful, because Set*ClockFrequency always adjusts the voltage when called).

Average Voltage

The average voltage are measured with the clock fixed for each VDD.

VDD

TODO.

VDDA

With scePowerSetArmClockFrequency fixed

Pervasive Clock Value	Voltage (mW)
1	18~50
3	18~80
4	22~110
5	27~137
6	35~194
7	55~257
8	72~329
9	123~415
10	50~240
12	23~114
13	43~220
14	78~329
15	133~435

VDDC

TODO.

VDDG

With scePowerSetGpuClockFrequencyInternal fixed

Clock Freq Value	Voltage (mW)
42MHz	64~unk (gpu crash in test)
55MHz	70~unk (gpu crash in test)
83MHz	83~unk (gpu crash in test)
111MHz	93~796
166MHz	129~1106
222MHz	171~1242