ISL29043

7

FN7935.0

February 9, 2012

Register Descriptions

TABLE 2. REGISTER 0x00 (RESERVED)

BIT #

ACCESS

DEFAULT

NAME

FUNCTION/OPERATION

7:0

RO

(n/a)

(n/a)

Reserved - no need to read or write

TABLE 3. REGISTER 0x01 (CONFIGURE) - PROX/ALS CONFIGURATION

BIT #

ACCESS

DEFAULT

NAME

FUNCTION/OPERATION

7RW

0x00

PROX_EN

(Prox Enable)

When = 0, proximity sensing is disabled

When = 1, continuous proximity sensing is enabled. Prox data will be ready 0.54ms after this

bit is set high

6:4

RW

0x00

PROX_SLP

(Prox Sleep)

For bits 6:4 = (see the following)

111; sleep time between prox IR LED pulses is 0.0ms (run continuously)

110; sleep time between prox IR LED pulses is 12.5ms

101; sleep time between prox IR LED pulses is 50ms

100; sleep time between prox IR LED pulses is 75ms

011; sleep time between prox IR LED pulses is 100ms

010; sleep time between prox IR LED pulses is 200ms

001; sleep time between prox IR LED pulses is 400ms

000; sleep time between prox IR LED pulses is 800ms

3RW

0x00

PROX_DR

(Prox Drive)

When = 0, IRDR behaves as a pulsed 110mA current sink

When = 1, IRDR behaves as a pulsed 220mA current sink

2RW

0x00

ALS_EN

(ALS Enable)

When = 0, ALS/IR sensing is disabled

When = 1, continuous ALS/IR sensing is enabled with new data ready every 100ms

1RW

0x00

ALS_RANGE

(ALS Range)

When = 0, ALS is in low-lux range

When = 1, ALS is in high-lux range

0RW

0x00

ALSIR_MODE

(ALSIR Mode)

When = 0, ALS/IR data register contains visible ALS sensing data

When = 1, ALS/IR data register contains IR spectrum sensing data

TABLE 4. REGISTER 0x02 (INTERRUPT) - PROX/ALS INTERRUPT CONTROL

BIT #

ACCESS

DEFAULT

BIT NAME

FUNCTION/OPERATION

7FLAG

0x00

PROX_FLAG

(Prox Flag)

When = 0, no Prox interrupt event has occurred since power-on or last “clear”

When = 1, a Prox interrupt event occurred. Clearable by writing “0”

6:5

RW

0x00

PROX_PRST

(Prox Persist)

For bits 6:5 = (see the following)

00; set PROX_FLAG if 1 conversion result trips the threshold value

01; set PROX_FLAG if 4 conversion results trip the threshold value

10; set PROX_FLAG if 8 conversion results trip the threshold value

11; set PROX_FLAG if 16 conversion results trip the threshold value

4RW

0x00

Unused

(Write 0)

Unused register bit - write 0

3FLAG

0x00

ALS_FLAG

(ALS FLAG)

When = 0, no ALS interrupt event has occurred since power-on or last “clear”

When = 1, an ALS interrupt event occurred. Clearable by writing “0”

2:1

RW

0x00

ALS_PRST

(ALS Persist)

For bits 2:1 = (see the following)

00; set ALS_FLAG if 1 conversion is outside the set window

01; set ALS_FLAG if 4 conversions are outside the set window

10; set ALS_FLAG if 8 conversions are outside the set window

11; set ALS_FLAG if 16 conversions are outside the set window

0RW

0x00

INT_CTRL

(Interrupt Control)

When = 0, set INT pin low if PROX_FLAG or ALS_FLAG high (logical OR)

When = 1, set INT pin low if PROX_FLAG and ALS_FLAG high (logical AND)

TABLE 5. REGISTER 0x03 (PROX_LT) - INTERRUPT LOW THRESHOLD FOR PROXIMITY SENSOR

BIT #

ACCESS

DEFAULT

BIT NAME

FUNCTION/OPERATION

7:0

RW

0x00

PROX_LT

(Prox Threshold)

8-bit interrupt low threshold for

proximity sensing