MLX75031 Datasheet, PDF (44/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.13.1. SetAH register
This register defines the DAC level for IR channel A.
SetAH
0x1
Bit
Read/Write
Init
7
DACA7
R/W
0
6
DACA6
R/W
0
5
DACA5
R/W
0
4
DACA4
R/W
0
3
DACA3
R/W
0
2
DACA2
R/W
0
1
DACA1
R/W
0
0
DACA0
R/W
0
DACA<7:0>: the 8 bits of the DAC level for IR channel A
8.13.2. SetAL register
This register defines the gain and cut-off frequency adjustments for IR channel A.
Bit
7
6
5
4
3
2
1
0
GAIN_ GAIN_ GAIN_
BW_ BW_
SetAL
ADJ ADJ ADJ
-
ADJ
ADJ
-
-
_A2 _A1 _A0
_A1
_A0
0x2 Read/Write R/W R/W R/W
R
R/W R/W
R
R
Init
0
0
0
0
0
1
0
0
GAIN_ADJ_A<2:0>: gain adjustment of channel A
GAIN_ADJ_ GAIN_ADJ_ GAIN_ADJ_
_A2
_A1
_A0
Gain
0
0
0
3
0
0
1
5.8
0
1
0
8.7
0
1
1
11.5
1
0
0
14.4
1
0
1
17.1
1
1
0
20.3
1
1
1
22.5
SetAL<4>: not implemented, read as '0'
BW_ADJ_A<1:0>: cut-off frequency adjustment of channel A
BW_ADJ_
_A1
0
0
1
1
BW_ADJ_
_A0
0
1
0
1
3dB Cut-off
Frequency (kHz)
15
30
45
70
SetAL<1:0>: not implemented, read as '0'
REVISION 001 – JANUARY, 2013
39010xxxxx
Page 44 of 44