LM3532TMX-40ANOPB National Semiconductor Corporation, LM3532TMX-40ANOPB Datasheet - Page 29

• Manufacturer Part Number: LM3532TMX-40ANOPB
• Description: High Efficiency White Led Driver With Programmable Ambient Light Sensing Capability And I2c-compatible Interface
• Manufacturer: National Semiconductor Corporation

CONTROL A BRIGHTNESS CONFIGURATION
The Control A Brightness Configuration Register has 3 func-
tions:
1.
CONTROL B BRIGHTNESS CONFIGURATION
The Control B Brightness Configuration Register has 3 func-
tions:
1.
CONTROL C BRIGHTNESS CONFIGURATION
The Control C Brightness Configuration Register has 3 func-
tions:
1.
Bits [7:5]
Not Used
N/A
Bits [7:5]
Not Used
N/A
Bits [7:5]
Not Used
N/A
Selects how the LED current sink which is mapped to
Control Bank A is controlled (either directly through the
I
Selects how the LED current sink which is mapped to
Control Bank B is controlled (either directly through the
I
Selects how the LED current sink which is mapped to
Control Bank C is controlled (either directly through the
I
2
2
2
C or via the ALS interface)
C or via the ALS interface)
C or via the ALS interface)
TABLE 11. Control C Brightness Configuration Register Description (Address 0x1A)
TABLE 10. Control B Brightness Configuration Register Description (Address 0x18)
TABLE 9. Control A Brightness Configuration Register Description (Address 0x16)
Bits [4:2]
Control A Brightness Pointer (I
Current Control Only)
000 = Control A Zone Target 0
001 = Control A Zone Target 1
010 = Control A Zone Target 2
011 = Control A Zone Target 3
1XX = Control A Zone Target 4
(default)
Bits [4:2]
Control A Brightness Pointer (I
Current Control Only)
000 = Control B Zone Target 0
001 = Control B Zone Target 1
010 = Control B Zone Target 2
011 = Control B Zone Target 3
1XX = Control B Zone Target 4
(default)
Bits [4:2]
Control C Brightness Pointer (I
Current Control Only)
000 = Control C Zone Target 0
001 = Control C Zone Target 1
010 = Control C Zone Target 2
011 = Control C Zone Target 3
1XX = Control C Zone Target 4
(default)
2
2
2
C
C
C
Bit 1
LED Current Mapping Mode
0 = Exponential Mapping
(default)
1 = Linear Mapping
Bit 1
LED Current Mapping Mode
0 = Exponential Mapping
(default)
1 = Linear Mapping
Bit 1
LED Current Mapping Mode
0 = Exponential Mapping
(default)
1 = Linear Mapping
29
2.
3.
2.
3.
2.
3.
Programs the LED current mapping mode for Control
Bank A (Linear or Exponential)
Programs which Control A Zone Target Register is the
Brightness Register for Bank A in I
Programs the LED current mapping mode for Control
Bank B (Linear or Exponential)
Programs which Control B Zone Target Register is the
Brightness Register for Bank B in I
Programs the LED current mapping mode for Control
Bank C (Linear or Exponential)
Programs which Control C Zone Target Register is the
Brightness Register for Bank C in I
Bit 0
Bank A Current Control
0 = ALS Current Control
1 = I
Bit 0
Bank B Current Control
0 = ALS Current Control
1 = I
Bit 0
Bank C Current Control
0 = ALS Current Control
1 = I
2
2
2
C Current Control (default)
C Current Control (default)
C Current Control (default)
2
2
2
C Current Control
C Current Control
C Current Control
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