TLE4998C3 Datasheet, PDF (40/44 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998C
SPC Output Definition
The range information in the status bit can be used to determine whether the range has
been properly identified. Changing the range takes some time due to the settling time of
internal circuitry. The first sample after a range switch therefore still displays a value
sampled with the old range setting, and the second transmission after changing the
range displays the new range with reduced accuracy.
13.6
Synchronous Mode with ID Selection
This functionality is similar to the previous mode, but instead of switching the range of
one sensor, one of up to four sensors are selectable on a bus (bus mode, 1 master with
up to 4 slaves). This allows parallel connection of up to 4 sensors using only three lines
(VDD, GND, OUT), as illustrated in Figure 16.
Sensor 1
VDD
OUT
GND
Sensor 2
VDD
OUT
GND
CPU
Capcom-Unit
Outpin (OD)
Figure 16 Bidirectional Communication with ID Selection
In this mode, the sensor starts to transfer complete packages only after receiving a
master low pulse with an ID that is equivalent to the programmed value in its ID register.
The mapping between master low time and ID is given in Table 27. A proper addressing
requires the different sensors on a same bus to be programmed with the same nominal
Data Sheet
40
Rev 1.0, 2008-12