MSB

LSB

Zone Boundary Registers

Register Address: 0x60, 0x61, 0x62, 0x63

ZB7

bit7

ZB6

bit6

ZB5

bit5

ZB4

bit4

ZB3

bit3

ZB2

bit2

ZB1

bit1

ZB0

bit0

Register Address:

0x60 = Zone Boundary 0

0x61 = Zone Boundary 1

0x62 = zone Boundary 2

0x63 = Zone Boundary 3

MSB

LSB

Internal ALS Resistor Register

Register Address: 0x51

R3

bit7

R2

bit6

R1

bit5

R0

bit4

RFU

bit3

RFU

bit2

RFU

bit1

RFU

bit0

MSB

LSB

ALS Control / SI Rev Register

Register Address: 0x50

ALS-EN

bit7

AVE2

bit6

AVE1

bit5

AVE0

bit4

0

bit3

0

bit2

Rev1

bit1

Rev0

bit0

17

LM3535

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SNVS598B – AUGUST 2010 – REVISED MARCH 2018

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Figure 25. ALS Control / Silicon Revision Register Description

Internal Hex Address: 0x50

•

Rev0-Rev1 : Stores the Silicon Revision value. LM3535 = 11

•

AVE2-AVE0: Sets Averaging Time for ALS sampling. Need two to three Averaging periods to make transition

decision. 000 = 25 ms, 001 = 50 ms, 010 = 100 ms 011 = 200 ms, 100 = 400 ms, 101 = 800 ms 110 = 1.6 s,

111 = 3.2s

Figure 26. ALS Resistor Control Register Description

Internal Hex Address: 0x51

•

R0-R3: Sets the internal ALS resistor value

Table 2. Internal ALS Resistor Table

R3

R2

R1

R0

ALS RESISTOR VALUE (

Ω)

0

0

0

0

High Impedance

0

0

0

1

13.6 k

0

0

1

0

9.08 k

0

0

1

1

5.47 k

0

1

0

0

2.32 k

0

1

0

1

1.99 k

0

1

1

0

1.86 k

0

1

1

1

1.65 k

1

0

0

0

1.18 k

1

0

0

1

1.1 k

1

0

1

0

1.06 k

1

0

1

1

986

1

1

0

0

804

1

1

0

1

764

1

1

1

0

745

1

1

1

1

711

Figure 27. Zone Boundary Register Descriptions

•

ZB7-ZB0: Sets Zone Boundary Lines with a Falling ALS voltage.

–

0xFF w/ ALS Falling = 992.3 mV (typical).