TMD3700 Datasheet, PDF (31/46 Pages) ams AG – The device features advanced Proximity measurement

TMD3700 − Register Description
Figure 51:
CALIBCFG Register
Field
Name
7:5
binsrch_target
4
Reserved
CALIBCFG Register (0xD9)
0xD9: CALIBCFG
Reset Type
Description
ADC target during binary search
Value
Target
0
0
1
1
2
3
3
7
4
15
5
31
'h2
RW
6
63
7
127
Note that this target is relative to 8-bit ADC values.
In the circuit, a 10-bit target is used (x4) of which the
lowest 2 bits are always ignored when checking for
zero during binary search and zero detection.
In hardware, this defines a mask of which bits to
ignore when comparing to zero. E.g.
binsrch_target=4 (target=15) means that values
from the ADC are AND'ed with 0xffc0 before
comparing to zero. Only values 16 or larger are
taken as positive ADC values.
1
RW Reserved. Set to 0.
ams Datasheet
[v1-02] 2016-Aug-19
Page 31
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