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ADP5588 Data Sheet

Rev. C | Page 22 of 28

Table 39. CMP_CONFG_SENS2—Register 0x32 (Sensor 2 Comparator Configuration Register)

Field Bit Description

[7:6] Not used.

FILT (2-0) [5:3] Programs the number of consecutive measurements required to transition the L2 and L3 levels.

FI LT Number Required Approximate Time (sec)

000 1 0.08

001

0.16

010 4 0.32

011 8 0.64

100 16 1.28

101 32 2.56

110 64 5.12

111 128 10.24

FORCE_RD 2 1: Forces a read of the light sensor; reset by the internal state machine after conversion is complete and

L2_OUT and L3_OUT are valid.

L3_EN 1 1: Enables the L3 comparator for Sensor 2 input.

0: Disables the L3 comparator for Sensor 2 input.

L2_EN 0 1: Enables the L3 comparator for Sensor 2 input.

0: Disables the L3 comparator for Sensor 2 input.

Note that the L3 comparator has priority over the L2 comparator.

When the software forces a conversion, the state machine clears the forced bit after the conversion is complete and the proper registers have been updated.

Table 40. CMP1_LVL2_TRIP—Register 0x33 (L2 Light Sensor Reference Level (Output Falling for Sensor 1)

Field Bit Description

L2_T7 to L2_T0 [7:0] Sensor 1 comparator Level 2 (Office) reference. If the comparator input is below this trip point, the

comparator trips and enters Level 2 (office) mode and L2_OUT is set. The programmable range is from 0 μA

to 1000 μA (0 lux to 2550 lux) in steps of 4 μA.

Table 41. CMP1_LVL2_HYS—Register 0x34 (L2 Light Sensor Hysteresis (Active When Output Rising) for Sensor 1)

Field Bit Description

L2_H7 to L2_H0 [7:0] Sensor 1 comparator Level 2 (Office) hysteresis. If the comparator input is above L2_TRP + L2_HYS, the

comparator trips and enters Level 1 (outdoor) mode and L2_OUT is cleared. The programmable range is from

0 μA to 1000 μA (0 lux to 2550 lux) in steps of 4 μA.

Table 42. CMP1_LVL3_TRIP—Register 0x35 (L3 Light Sensor Reference Level (Output Falling for Sensor 1)

Field Bit Description

L3_T7 to L3_T0 [7:0] Sensor 1 comparator Level 3 (Dark) reference. If the comparator input is below L3_TRP, the comparator trips

and enters Level 3 (dark) mode and L3_OUT is set. The programmable range is from 0 μA to 127.5 μA (0 lux to

318.75 lux) in steps of 0.5 μA.

Table 43. CMP1_LVL3_HYS—Register 0x36 (L3 Light Sensor Hysteresis (Active When Output Rising) for Sensor 1)

Field Bit Description

L3_H [7:0] Sensor 1 comparator Level 3 (Dark) hysteresis. If the comparator input is above L3_TRP + L3_HYS, the

comparator trips and enters Level 2 (office) mode and L3_OUT is cleared. The programmable range is from

0 μA to 127.5 μA (0 lux to 318.75 lux) in steps of 0.5 μA.