RK816 datasheet(49/78 Pages) ROCKCHIP

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RK816 Datasheet

Rev 1.3

00: 2.5A， 01: 3A， 10: 3.5A， 11: 4A

Bit 5

BUCK2_DISCHRG_EN: BUCK2 discharge resistor enable bit when shut

down

0: disable discharge resistor when shut down

1: enable discharge resistor when shut down

Bit 4-3

BUCK2_RATE: BUCK2 voltage change rate when DVS

00: 3mV/uS， 01: 6mV/uS， 10: 12.5mV/uS， 11: 25mV/uS

Bit 2-0

BUCK2_ILMIN: BUCK2 minimum inductor’s peak current

000: 150mA， 001: 200mA， 010: 250mA， 011: 300mA

100: 340mA， 101: 380mA， 110: 420mA， 111: 460mA



BUCK2_ON_VSEL_REG (REG[33]): BUCK2 ON REGISTER

ADDRESS: 33H

TYPE: RW

Bit

Bit7

Bit6

Bit5 Bit4

Bit3

Bit2

Bit1

Bit0

SYMBOL

BUCK2_O

N_FPWM

BUCK2_P

HASE

BUCK2_ON_VSEL

DEFAULT

Boot0:011111；Boot1:OTP

Description

Bit 7

BUCK2_ON_FPWM:

1: force PWM mode in active mode

0: PWM/PFM auto change mode(default)

Bit 6

BUCK2_PHASE:

0: normal， 1: inverted

Bit 5-0

BUCK2_ON_VSEL:

BUCK2

active

mode

voltage,

0.7125V~1.45V,

step=12.5mV

000 000: 0.7125V

000 001: 0.725V

……

111 011: 1.45V

111 100: 1.8V

111 101: 2.0V

111 110: 2.2V

111 111: 2.3V



BUCK2_SLP_VSEL_REG (REG[34]): BUCK2 SLEEP REGISTER

ADDRESS: 34H

TYPE: RW

Bit

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SYMBOL

BUCK2_S

LP_FPWM

RESV

BUCK2_SLP_VSEL

DEFAULT

Boot0:011111；Boot1:OTP

Description

Bit 7

BUCK2_SLP_FPWM:

1: force PWM mode in sleep mode

0: PWM/PFM auto change mode(default)

RK816 Datasheet(PDF) 49 Page - Rockchip Electronics Co., Ltd

RK816 Datasheet(HTML) 49 Page - Rockchip Electronics Co., Ltd

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