LM3530 datasheet(28/50 Pages) TI1

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LM3530

SNVS606L – JUNE 2009 – REVISED DECEMBER 2014

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8.6 Register Maps

8.6.1 Register Descriptions

Table 4. LM3530 Register Definition

FUNCTION

ADDRESS

POR VALUE

1. Simple Interface Enable

2. PWM Polarity

3. PWM enable

General Configuration

4. Full-Scale Current Selection

0x10

0xB0

5. Brightness Mapping Mode

Select

6. I2C Device Enable

1. ALS Current Control Enable

2. ALS Input Enable

ALS Configuration

0x20

0x2C

3. ALS Input Select

4. ALS Averaging Times

Brightness Ramp Rate

Programs the rate of rise and fall

0x30

0x00

of the LED current

ALS Zone Information

1. Zone Boundary Change Flag

0x40

0x00

2. Zone Brightness Information

ALS Resistor Select

Internal ALS1 and ALS2

0x41

0x00

Resistances

Brightness Control (BRT)

Holds the 7 bit Brightness Data

0xA0

0x7F

Zone Boundary 0 (ZB0)

ALS Zone Boundary #0

0x60

0x33

Zone Boundary 1 (ZB1)

ALS Zone Boundary #1

0x61

0x66

Zone Boundary 2 (ZB2)

ALS Zone Boundary #2

0x62

0x99

Zone Boundary 3 (ZB3)

ALS Zone Boundary #3

0x63

0xCC

Zone Target 0 (Z0T)

Zone 0 LED Current Data. The

0x70

0x19

LED Current Source transitions to

the brightness code in Z0T when

the ALS_ input is less than the

zone boundary programmed in

ZB0.

Zone Target 1 (Z1T)

Zone 1 LED Current Data. The

0x71

0x33

LED Current Source transitions to

the brightness code in Z1T when

the ALS_ input is between the

zone boundaries programmed in

ZB1 and ZB0.

Zone Target 2 (Z2T)

Zone 2 LED Current Data. The

0x72

0x4C

LED Current Source transitions to

the brightness code in Z2T when

the ALS_ input is between the

zone boundaries programmed in

ZB2 and ZB1.

Zone Target 3 (Z3T)

Zone 3 LED Current Data. The

0x73

0x66

LED Current Source transitions to

the brightness code in Z3T when

the ALS_ input is between the

zone boundaries programmed in

ZB3 and ZB2.

Zone Target 4 (Z4T)

Zone 4 LED Current Data. The

0x74

0x7F

LED Current Source transitions to

the brightness code in Z4T when

the ALS_ input is between the

zone boundaries programmed in

ZB4 and ZB3.

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