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TMD2755 − Register Description

PERS Register (Address 0x8C)

Figure 29:

PERS Register

The frequency of consecutive proximity channel results outside

of threshold limits are counted; this count value is compared

against the PPERS value. If the counter is equal to the PPERS

value an interrupt is asserted. Any time a proximity channel

result is inside the threshold values the counter is cleared.

Addr: 0x8C

PERS

Bit

Bit Name

Default

Access

Bit Description

7:4

PPERS

(0000)

This register sets the proximity persistence filter.

Value

Interrupt

0 (0000)

Every proximity cycle

1 (0001)

Any value outside proximity thresholds

2 (0010)

2 consecutive proximity values out of range

3 (0011)

3 consecutive proximity values out of range

…….

15 (1111)

15 consecutive proximity values out of range

3:0

APERS

(0000)

This register sets the ALS persistence filter.

0 (0000)

Every ALS cycle

1 (0001)

Any value outside ALS thresholds

2 (0010)

2 consecutive ALS values out of range

3 (0011)

3 consecutive ALS values out of range

4 (0100)

5 consecutive ALS values out of range

5 (0101)

10 consecutive ALS values out of range

6 (0110)

15 consecutive ALS values out of range

7 (0111)

20 consecutive ALS values out of range

……

13 (1101)

50 consecutive ALS values out of range

14 (1110)

55 consecutive ALS values out of range

15 (1111)

60 consecutive ALS values out of range

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