TLE5012B
Specification
User’s Manual 28 Rev. 1.2, 2018-02
4.5 Switching to external clock
External clock operation is possible for the interface configurations SSC only, SSC & PWM, and SSC & SPC. To
switch the TLE5012B to external clock supply the following procedure is used:
• Trigger a chip reset by writing a “1” to the AS_RST bit (address 01
H
[0]) via SSC interface
• Within 120µs after the reset command, write a “1” to the CLK_SEL bit (address 06
H
[4])
• After the power-on time (max. 7 ms), read the CLK_SEL bit via SSC interface to confirm that external clock is
selected
Note: If the clock source (CLK_SEL) bit is switched to external clock during operation of the sensor it may occur
(at a chance of roughly 1%) due to an internal timing conflict, that the switching command is not accepted
and the chip keeps operating on internal clock.
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