LM3533 Datasheet, PDF (40/53 Pages) Texas Instruments – Complete Lighting Power Solution for Smartphone Handsets

LM3533
Bit [7:6]
Not Used
TABLE 22. ALS CONFIGURATION REGISTER (ADDRESS 0x31)
Bits [5:3]
ALS Average Times
000 = 17.92 ms
001 = 35.84ms
010 = 71.68ms
011 = 143.36ms
100 = 286.72ms (Default)
101 = 573.44ms
110 = 1146.88ms
111 = 2293.76ms
Bit 2
Fast startup Enable/
Disable
0 = ALS fast startup is
enabled (Default)
1 = ALS fast startup is
disabled
Bit 1
ALS Input Mode
Bit 0
ALS Enable/Disable
0 = ALS is set for Analog 0 = ALS is disabled
Sensor Input Mode
(Default)
(Default)
1 = ALS is enabled
1 = ALS is set for PWM
Sensor Input Mode
TABLE 23. ALS ALGORITHM SELECT REGISTER (ADDRESS 0X32)
Bits [7:6]
Bits [5:4]
Bits [3:2]
Bits [1:0]
ALS Pattern Generator ALSM3 zone Algorithm Select ALSM2 zone Algorithm Select ALSM1 zone Algorithm
Zone Algorithm Select
Select
00 = Direct Control (Default) 00 = Direct Control (Default) 00 = Direct Control (Default) 00 = Direct Control (default)
(Default)
01 = Up Only Control
01 = Up Only Control
01 = Up Only
01 = Up Only
1X = Down Delay Control 1X = Down Delay Control
1X = Down Delay
1X = Down Delay
TABLE 24. ALS DOWN DELAY CONTROL REGISTER (ADDRESS 0x33)
Bits [7:4]
Not Used
Bits [4:0]
Down Delay Settings
(# Indicates total average periods required to force a change in the down
direction)
00000 = 6 (Default)
:
:
:
11111 = 37
Bits [7:5]
Not Used
TABLE 25. ALS ZONE INFORMATION REGISTER (ADDRESS 0x34)
Bits [4:2]
Bit 1
Bit 0
Average Zone Information Bits
Zone Change Bit
Interrupt Enable Bit
000 = Zone 0 (Default)
001 = Zone 1
0 = no change in the ALS zone 0 = INT Mode Disabled (Default)
since the last read back of this 1 = INT Mode Enabled
010 = Zone 2
register (Default)
011 = Zone 3
1XX = Zone 4
1 = the ALS zone has changed.
A read back of this
Bit 7
MSB
Data
Bit 6
Data
TABLE 26. READ-BACK ADC REGISTER (ADDRESS 0x37)
Bit 5
Bit 4
Bit 3
Bit 2
Data
Data
Data
Data
Bit 1
Data
Bit 0
LSB
Data
This register contains the ADC data from the internal 8-bit ADC. This is a read-only register. When the ALS Interface is enabled
this register is updated with the digitized ALS information every 140µs.
Bit 7
MSB
Data
Bit 6
TABLE 27. READ-AVERAGE ADC REGISTER (ADDRESS 0x38)
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Data
Data
Data
Data
Data
Data
Bit 0
LSB
Data
40
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