TLE5012-E0742 INFINEON [Infineon Technologies AG], TLE5012-E0742 Datasheet - Page 55

• Manufacturer Part Number: TLE5012-E0742
• Description: GMR-Based Angular Sensor for Rotor-Position Sensing
• Manufacturer: INFINEON [Infineon Technologies AG]

Figure 24
3.5.4
The Incremental Interface (IIF) uses an up/down counter of a microcontroller for the angle transmission. The
synchronization is done by the parallel active SSC Interface. The angle value read out by the SSC Interface can
be compared to the stored counter value. In case of a non-synchronization, the microcontroller adds the difference
to the actual counter value to synchronize the TLE5012 with the microcontroller. The resolution of the IIF can be
selected within the interface mode4 register (MOD_4) under IFAB_RES.
After startup, the IIF pulses out the actual absolute angle value to notify the microcontroller about the absolute
position.
In register MOD_1 the IIF can be set in A/B mode or Step/Direction mode (IIF_MOD).
A/B Mode
The phase shift between phase A and B indicates a clockwise (A follows B) or a counterclockwise (B follows A)
rotation of the magnet.
Step/Direction Mode
Phase A pulses out the increments and phase B indicates the direction
Figure 25
Final Data Sheet
(Step/Dir Mode)
Incremental Interface
HS hysteresis
Incremental Interface with Step/Direction mode
Incremental
Interface
Counter Value
Direction
Step
V
V
V
V
H
L
H
L
0
α
elect
α
1
Ideal Switching Point
HShystel
2
55
0°
α
HShystel
3
α
elect
4
(Figure
25).
3
2
1
Specifications
V 1.0, 2010-11
TLE5012