VCNL4100

www.vishay.com

Vishay Semiconductors

Rev. 1.2, 30-Aug-16

9

Document Number: 84319

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Command Register Format

VCNL4100 provides an 8-bit command register for ALS and PS controlling independently. The description of each command

format is shown in following tables.

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TABLE 2 - REGISTER: ALS_CONF DESCRIPTION

REGISTER NAME

COMMAND CODE: 0xH_L (0xH DATA BYTE LOW) OR 0xH_H (0xH DATA BYTE HIGH)

Command

Bit

765

43210

ALS_CONF

COMMAND CODE: 00H_L (00H DATA BYTE LOW)

Command

Bit

Description

ALS_IT

7 : 6

(0 : 0) = 80 ms; (0 : 1) = 160 ms; (1 : 0) = 320 ms; (1 : 1) = 640 ms

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ALS integration time setting, longer integration time has higher sensitivity

Reserved

5 : 4

Default = (0 : 0), reserved

ALS_PERS

3 : 2

(0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 4, (1 : 1) = 8

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ALS interrupt persistence setting

ALS_INT_EN

1

0 = ALS interrupt disable, 1 = ALS interrupt enable

ALS_SD

0

0 = ALS power on, 1 = ALS shut down

TABLE 3 - REGISTER: RESERVE COMMAND DESCRIPTION

Reserved

COMMAND CODE: 00H_H (00H DATA BYTE HIGH)

Command

Bit

Description

Reserved

7 : 0

Default = 00H

TABLE 4 - REGISTER ALS_THDH_L AND ALS_THDH_M DESCRIPTION

ALS_THDH_L



ALS_THDH_M

COMMAND CODE: 01H_L (01H DATA BYTE LOW)

COMMAND CODE: 01H_H (01H DATA BYTE HIGH)

Register

Bit

Description

ALS_THDH_L

7 : 0

00H to FFH, ALS high interrupt threshold LSB byte

ALS_THDH_M

7 : 0

00H to FFH, ALS high interrupt threshold MSB byte

TABLE 5 - REGISTER: ALS_THDL_L AND ALS_THDL_M DESCRIPTION

ALS_THDL_L



ALS_THDL_M

COMMAND CODE: 02H_L (02H DATA BYTE LOW)

COMMAND CODE: 02H_H (02H DATA BYTE HIGH)

Register

Bit

Description

ALS_THDL_L

7 : 0

00H to FFH, ALS low interrupt threshold LSB byte

ALS_THDL_M

7 : 0

00H to FFH, ALS low interrupt threshold MSB byte

TABLE 6 - REGISTER: PS_CONF1 DESCRIPTION

PS_CONF1

COMMAND CODE: 03H_L (03H DATA BYTE LOW)

Command

Bit

Description

PS_Duty

7 : 6

(0 : 0) = 1/5120, (0 : 1) = 1/640, (1 : 0) = 1/80, (1 : 1) = 1/20

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PS IRED on / off duty ratio setting

PS_ IT

5 : 4

(0 : 0) = 1T, (0 : 1) = 1.3T, (1 : 0) = 1.6T, (1 : 1) = 2T



PS integration time setting

PS_PERS

3 : 2

(0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 3, (1 : 1) = 4



PS interrupt persistence setting

Reserved

1

Default = 0, reserved

PS_SD

0

0 = PS power on, 1 = PS shut down