SI1141(2011) 데이터 시트보기 (PDF) - Silicon Laboratories

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SI1141
(Rev.:2011)

PROXIMITY/AMBIENT LIGHT SENSOR IC WITH I2C INTERFACE

Silicon Laboratories 

Si1141/42/43

Table 5. Command Register Summary (Continued)

COMMAND Register

PARAM_W PARAM_RD

Error Code in

Name

Encoding R Register Register RESPONSE Register

Description

Reserved

000 01000

—

—

PS_PAUSE 000 01001

—

—

ALS_PAUSE 000 01010

—

—

PSALS_PAUSE 000 01011

—

—

Reserved

000 01100

—

—

PS_AUTO 000 01101

—

—

—

—



Pauses autonomous PS



Pauses autonomous ALS



Pauses PS and ALS



—



Starts/Restarts an autonomous PS Loop

ALS_AUTO 000 01110

—

—

PSALS_AUTO 000 01111

—

—

Reserved

000 1xxxx

—

—



Starts/Restarts an autonomous

ALS Loop



Starts/Restarts autonomous ALS

and PS loop

—

—

RESPONSE Register

0000 cccc

1000 0000

1000 1000

Table 6. Response Register Error Codes

Description

NO_ERROR. The lower bit is a circular counter and is incremented every time a

command has completed. This allows the host to keep track of commands sent to

the Si1141/42/43. The circular counter may be cleared using the NOP command.

INVALID_SETTING. An invalid setting was encountered.

Clear using the NOP command.

PS1_ADC_OVERFLOW. Indicates proximity channel one conversion overflow.

1000 1001

PS2_ADC_OVERFLOW. Indicates proximity channel two conversion overflow.

1000 1010

1000 1100

1000 1101

1000 1110

PS3_ADC_OVERFLOW. Indicates proximity channel three conversion overflow.

ALS_VIS_ADC_OVERFLOW. Indicates visible ambient light channel conversion

overflow.

ALS_IR_ADC_OVERFLOW. Indicates infrared ambient light channel conversion

overflow.

AUX_ADC_OVERFLOW. Indicates auxiliary channel conversion overflow.

18

Preliminary Rev. 0.5

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