TLE5010 Datasheet, PDF (29/56 Pages) Infineon Technologies AG – GMR Based Angular Sensor

TLE5010
Draft
Synchronous Serial Communication Interface (SSC)
The margin time in following table is the time between write access to the SSC Data Line
and the earliest possible sample read of the TLE5010 itself for read back.
It is useful to have a maximum distance between WRITE and subsequent READ. This
ensures a reliable read back of the written data for the Slave-Active Byte generation.
Table 14 Maximum Pull-up Time Margin with worst-case specified Timing
SSC_FILT
0
SSC_TIMING
don’t care
Min. t_PU Margin ¹⁾
90
Unit Comment
ns
1
50
1) _{Calculation: Margin=tSCKl(min)+tDATwMAX-(tPU)-tDATrMIN.For Margin<50 ns no problems can occur.}
8.2
SSC Baud rate
The SSC Baud rate depends on the internal clock frequency.
12 internal digital clock cycles are necessary to ensure a reliable operation.
Therefore the maximum SSC Baud rate depends on the external CLK.
f_SSC
=
-^f-^C---^L---^K--
2
8.3
SSC Spike Filter
A SSC Spike Filter for all SSC lines can be selected via the SSC_FILT bit.
8.3.1 SSC Spike Filter Off
When the spike filter is disabled, each slope of a rising voltage is used to define a bit.
This is independent of the length of the sampled pulse.
For example a positive spike generates therefore a rising and a falling edge.
Preliminary Data Sheet
29
V 0.9, 2007-05