MLX75031 Datasheet, PDF (45/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.13.3. SetBH register
This register defines the DAC level for IR channel B.
SetBH
0x3
Bit
Read/Write
Init
7
DACB7
R/W
0
6
DACB6
R/W
0
5
DACB5
R/W
0
4
DACB4
R/W
0
3
DACB3
R/W
0
2
DACB2
R/W
0
1
DACB1
R/W
0
0
DACB0
R/W
0
DACB<7:0>: the 8 bits of the DAC level for IR channel B
8.13.4. SetBL register
This register defines the gain and cut-off frequency adjustments for IR channel B.
Bit
7
6
5
4
3
2
1
0
GAIN_ GAIN_ GAIN_
BW_ BW_
SetBL
ADJ ADJ ADJ
-
ADJ
ADJ
-
-
_B2 _B1 _B0
_B1
_B0
0x4 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_B<2:0>: gain adjustment of channel B
GAIN_ADJ_B2 GAIN_ADJ_B1 GAIN_ADJ_B0
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
SetBL<4>: not implemented, read as '0'
BW_ADJ_B<1:0>: cut-off frequency adjustment of channel B
BW_ADJ_B1 BW_ADJ_B0
0
0
0
1
1
0
1
1
3dB Cut-off Frequency (kHz)
15
30
45
70
SetBL<1:0>: not implemented, read as '0'
REVISION 001 – JANUARY, 2013
39010xxxxx
Page 45 of 45