LM3532 datasheet(27/52 Pages) TI2

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LM3532

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SNVS653E – JULY 2011 – REVISED AUGUST 2015

2. Programs the LED current mapping mode for Control Bank A (Linear or Exponential).

3. Programs which Control A Zone Target Register is the Brightness Register for Bank A in I2C Current Control.

Table 9. Control A Brightness Configuration Register Description (Address 0x16)

Bits [7:5]

Bits [4:2]

Bit 1

Bit 0

Not Used

Control A Brightness Pointer (I2C

LED Current Mapping Mode

Bank A Current Control

Current Control Only)

N/A

000 = Control A Zone Target 0

0 = Exponential Mapping (default)

0 = ALS Current Control

001 = Control A Zone Target 1

1 = Linear Mapping

1 = I2C Current Control (default)

010 = Control A Zone Target 2

011 = Control A Zone Target 3

1XX = Control A Zone Target 4 (default)

7.6.8 Control B Brightness Configuration

The Control B Brightness Configuration Register has 3 functions:

1. Selects how the LED current sink which is mapped to Control Bank B is controlled (either directly through the

I2C or via the ALS interface).

2. Programs the LED current mapping mode for Control Bank B (Linear or Exponential).

3. Programs which Control B Zone Target Register is the Brightness Register for Bank B in I2C Current Control.

Table 10. Control B Brightness Configuration Register Description (Address 0x18)

Bits [7:5]

Bits [4:2]

Bit 1

Bit 0

Not Used

Control A Brightness Pointer (I2C

LED Current Mapping Mode

Bank B Current Control

Current Control Only)

N/A

000 = Control B Zone Target 0

0 = Exponential Mapping (default)

0 = ALS Current Control

001 = Control B Zone Target 1

1 = Linear Mapping

1 = I2C Current Control (default)

010 = Control B Zone Target 2

011 = Control B Zone Target 3

1XX = Control B Zone Target 4 (default)

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