Datasheet

LM3533 Graphical User Interface

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Table 27. Down Delay (0x33)

Bits [4:0]

Down Delay Settings

(# Indicates total average periods required to force a change in the down direction)

00000 = 6 (Default)

11111 = 37

Table 28. Zone Information (0x34)

Bits [4:2] Bit 1 Bit 0

Average Zone Information Bits Zone Change Bit Interrupt Enable Bit

000 = Zone 0 (Default) 0 = no change in the ALS zone since the last 0 = INT Mode Disabled (Default)

001 = Zone 1 read back of this register (Default) 1 = INT Mode Enabled

010 = Zone 2 1 = the ALS zone has changed. A read back

011 = Zone 3 of this

1XX = Zone 4

Table 29. ADC Readback (0x37)

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

MSB LSB

Data Data Data Data Data Data Data Data

Table 30. Read-Average ADC Register (ADDRESS 0x38)

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

MSB LSB

Data Data Data Data Data Data Data Data

Table 31. Zone Boundaries

Name Address Function

Zone 0H 0x50 ALS Zone Boundary 0 High

Zone 0L 0x51 ALS Zone Boundary 0 Low

Zone 1H 0x52 ALS Zone Boundary 1 High

Zone 1L 0x53 ALS Zone Boundary 1 Low

Zone 2H 0x54 ALS Zone Boundary 2 High

Zone 2L 0x55 ALS Zone Boundary 2 Low

Zone 3H 0x56 ALS Zone Boundary 3 High

Zone 3L 0x57 ALS Zone Boundary 3 Low

Note: Each Zone Boundary register is 8 bits with a maximum voltage of 2V. This gives a step size for

each Zone Boundary Register bit of:

(7)

AN-2250 LM3533 Evaluation Kit SLOA172B–June 2012–Revised April 2013

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