SC5010

33

Fade Options Registers

This register is used to select the fade in and fade out related features.

Bit Field

Definition

Read / Write Description

0x09 [7]

FADE_EN

R/W

Enables the fading feature.

FADE_EN = 0: No Fading; Jumps directly to new PWM value.

FADE_EN = 1: Enables fading.

0x09 [6]

FADE_TYPE

R/W

Selects the fading type.

FADE_TYPE = 0: Logarithmic Fading

FADE_TYPE = 1: Linear Fading

0x09 [2:0]

STEP_MUL

[2:0]

R/W

multiplier of the fade amount.

STEP_MUL[2:0] = 000, N=0, multiplier = 1

Fade Rate Register

This register is used to program the rate of the duty cycle change during the fade in and fade out operation.

Bit Field

Definition

Read / Write Description

0x0A [6:0]

FADE_RATE

[6:0]

R / W

Defines how often the duty is changed during a fade.

Fade rate = PWM Output Rate / (1 + FADE_RATE[6:0])

Definition of Registers and Bits (continued)