TMD4903 Datasheet, PDF (31/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

TMD4903 − Register Description
Proximity Configuration Register One
(PGCFG1 0x8F)
PGCFG1 has fields that set the electrical gain of the proximity
response and set the LED drive current during pulses.
Figure 35:
Proximity Configuration Register One
7
6
5
4
PGGAIN
Reserved
3
2
PGLDRIVE
1
0
Reserved
Field
PGGAIN
Reserved
PGLDRIVE
Reserved
Bits
7:6
5
4:1
0
Description
Proximity Gain Control.
VALUE
GAIN VALUE
0
1x Gain
1
2x Gain
2
4x Gain
3
8x Gain
Reserved. Bit must be set to 0.
Proximity LED Drive Strength. Configures nominal LED current linearly
in steps of 20mA (actual current depends on factory-configuration of
LED drive strength).
VALUE
LED STRENGTH
0
10mA
1
30mA
2
50mA
…
10mA + (20mA * PGLDRIVE)
14
290mA
15
310mA
Reserved. Bit must be set to 0.
ams Datasheet
[v1-12] 2015-May-14
Page 31
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