LP3958TLSLASHNOPB datasheet(27/35 Pages) TI2

27 / 35 page

LP3958

www.ti.com

SNVS423C – JANUARY 2006 – REVISED MARCH 2013

WLED CONTROL (03H) – WLED CONTROL REGISTER

SLOPE

FADE_SEL

EN_FADE

DISPL

EN_MAIN

EN_SUB

R - 0

RW - 0

0 – fade execution time 0.65 sec (full scale)

SLOPE

Bit 5

1 – fade execution time 1.3 sec (full scale)

0 – fade control for MAIN

FADE_SEL

Bit 4

1 – fade control for SUB

0 – automatic fade disabled

EN_FADE

Bit 3

1 – automatic fade enabled

0 - MAIN and SUB individual control

DISPL

Bit 2

1 - MAIN and SUB controlled with MAIN DAC

0 – MAIN output disabled

EN_MAIN

Bit 1

1 – MAIN output enabled

0 – SUB output disabled

EN_SUB

Bit 0

1 – SUB output enabled

MAIN CURRENT (04H) – MAIN CURRENT CONTROL REGISTER

MAIN[7:0]

RW - 0

SUB CURRENT (05H) – SUB CURRENT CONTROL REGISTER

SUB[7:0]

RW - 0

MAIN, SUB current adjustment

MAIN[7:0], SUB[7:0]

Typical driver current (mA)

0000 0000

0000 0001

0.1

0000 0010

0.2

0000 0011

0.3

0000 0100

0.4

…

1111 1101

25.3

1111 1110

25.4

1111 1111

25.5

GPIO CONTROL (06H) – GPIO CONTROL REGISTER

EN_PWM_PIN

OEN[2:0]

R - 0

RW - 0

R - 0

RW - 0

0 – External PWM pin disabled

EN_PWM_PIN

Bit 4

1 – External PWM pin enabled

0 – GPIO pin set as a input

OEN[2:0]

Bits 2-0

1 – GPIO pin set as a output

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LP3958TL/NOPB Datasheet(PDF) 27 Page - Texas Instruments

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