TMD4903 Datasheet, PDF (50/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

TMD4903− RegisterDescription
Calibration Configuration Register Zero
(CALIBCFG0 0xD8)
Figure 63:
Calibration Configuration Register Zero
7
6
Reserved
DCAVG_
AUTO_OFFSET_
ADJUST
5
Reserved
4
ELECTRICAL_
CALIBRATION
3
BINSRCH_
SKIP
2
1
0
DCAVG_ITERATIONS
Field
Reserved
DCAVG_AUTO_OFFSET_ADJUST
Reserved
ELECTRICAL_CALIBRATION
BINSRCH_SKIP
Bits
7
6
5
4
3
Description
Reserved.
DC Averaging Auto Offset Adjust. If set, then during DC
averaging, whenever an ADC measurement is zero, the
appropriate offset register will be decreased and the
OFFSET_ADJUSTED flag is set. Note also that DC averaging
is not automatically restarted when this happens, so the
calculated baseline might be wrong. Software could restart
averaging in this case.
Reserved.
Enable Electrical Calibration. When asserted the
calibration routine will perform an internal electrical
calibration to adjust the proximity offset registers to
remove electrical crosstalk – there is no optical response at
all for this routine. When not asserted, calibration will
measure both optical and electrical crosstalk during
calibration.
Binary Search Skip. When asserted the calibration routine
will skip the binary search step. It is useful if zeroes are
detected during the DC averaging process to manually
reset the baseline and reduce the likelihood of zero counts.
Page 50
Document Feedback
ams Datasheet
[v1-12] 2015-May-14