Si1141/42/43
Table 13. Ambient Light Sensing Interrupt Resources
IRQ_ENABLE[1:0]
ALS_IE[1:0]
IRQ_MODE1[2:0]
ALS_IM[2:0]
Description
0
0
x
0
1
1
0
0
x
0
0
0
0
0
1
No ALS Interrupts
ALS_INT [0] set after every ALS_VIS sample 1
Monitors ALS_VIS, ALS_INT [0] upon exiting region
between low and high thresholds (ALS_LOW_TH and
ALS_HI_TH)
1
x
1
0
x
Monitors ALS_VIS, ALS_INT [1] set upon entering region
between low and high thresholds (ALS_LOW_TH and
ALS_HI_TH)
x
1
x
1
1
Monitors ALS_IR, ALS_INT [0] set upon exiting region
between low and high thresholds (ALS_LOW_TH and
ALS_HI_TH)
1
x
1
1
x
Monitors ALS_IR, ALS_INT [1] set upon entering region
between low and high thresholds (ALS_LOW_TH and
ALS_HI_TH)
Notes:
1. For ALS_IR channel, interrupts per sample is not possible without also enabling ALS_VIS
2. All other combinations are invalid and may result in unintended operation
3. There is hysteresis applied (ALS_TH) and history checking (ALS_HISTORY). ALS_HYST is encoded in 8-bit
compressed format.
4. In the Si114x, ALS_LOW_TH and ALS_HI_TH are also encoded in compressed format.
Table 14. Command Interrupt Resources
IRQ_ENABLE[5]
CMD_IE
IRQ_MODE2[3:2]
CMD_IM[1:0]
Description
0
1
1
x
x
x
0
0
1
No CMD Interrupts
CMD_INT set when there is a new RESPONSE
CMD_INT set when there is a new error code in
RESPONSE
26
Rev. 1.3
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