SX9331 datasheet(36/48 Pages) SEMTECH

36 / 48 page

SX9331

Final Datasheet

April 21, 2023

www.semtech.com

36 of 48

Rev. 2

Proprietary & Confidential

Semtech

frozen until prox is released.

b1: Off, as soon as prox is detected, average is

frozen for 4*AVGDEB_PH0 samples and then

unfrozen (even if prox is not released).

This setting is only applicable when the USE filter is

disabled.

AVGNEGFILT_PH0

13:11 RW

b001

Defines the strength of the AVG negative filter for

phase 0:

b000: 0 (Off)

b001: 1-1/2

b010: 1-1/4

b011: 1-1/8

b100: 1-1/16

b101: 1-1/32

b110: 1-1/64

b111: 1 (Infinite)

AVGPOSFILT_PH0

10:8 RW

b100

Defines the strength of the AVG positive filter for phase

b000: 0 (Off)

b001: 1-1/32

b010: 1-1/64

b011: 1-1/128

b100: 1-1/256

b101: 1-1/512

b110: 1-1/1024

b111: 1 (Infinite)

USETHRSHNODET_PH0

7:0

h00

Defines the non-detection threshold of the USE filter

for phase 0:

h00: 0

h01: 0.0625

h02: 0.125

…

hFF: 15.9375

Coded on 8bits unsigned as XXXX.YYYY.

805C RegAvgAFiltPh0

USETHRSHDETPOS_PH0 31:24 RW

h00

Defines the positive detection threshold of the USE

filter for phase 0:

h00: 0

h01: 0.0625

…

h7F: 7.9375

h80: -8

h81: -7.9375

…

hFF: -0.0625

Coded on 8bits signed (2’s complement) as

XXXX.YYYY.

USETHRSHDETNEG_PH0 23:16 RW

h00

Defines the negative detection threshold of the USE

filter for phase 0:

h00: 0

h01: 0.0625

…

h7F: 7.9375

h80: -8

h81: -7.9375

…

hFF: -0.0625

Coded on 8bits signed (2’s complement) as

XXXX.YYYY.

USEFILTFACT_PH0

15:13 RW

b000

Defines the multiplication factor applied to all 6 USE

filter thresholds and correction values for phase 0:

b000: x1

b001: x2

b010: x4

b011: x8

b100: x16

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