User Manual
546
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Capture/Compare Unit 6 (CCU6)
18.4.4
Compare Mode Output Path
gives an overview on the signal path from the channel State Bit CC63ST to its output pin COUT63.
As illustrated, a user can determine the desired output behavior in relation to the current state of CC63ST.
Please refer to
for detailed information on the output modulation for T12 signals.
Figure 148 Channel 63 Output Path
The output line COUT63_O can generate a T13 PWM at the output pin COUT63. The signal CC63_O can be used
to modulate the T12-related output signals with a T13 PWM. In order to decouple COUT63 from the internal
modulation, the compare state leading to an active signal can be selected independently by bits T13IM and
COUT63PS.
The last block of the data path is the Output Modulation block. Here, the modulation source T13 and the trap
functionality are combined and control the actual level of the output pin COUT63 (see
• The
T13 related compare signal
COUT63_O delivered by the T13 state selection with the enable bit
MODCTR.ECT13O
• The
trap state
TRPS with an individual enable bit TRPCTR.TRPEN13
If the modulation input signal COUT63_O is enabled (ECT13O = 1) and is at passive state, the modulated is also
in passive state. If the modulation input is not enabled, the output is in passive state.
If the Trap State is active (TRPS = 1), then the output enabled for the trap signal (by TRPEN13 = 1) is set to the
passive state.
The output of the modulation control block is connected to a level select block. It offers the option to
determine the actual output level of a pin, depending on the state of the output line (decoupling of
active/passive state and output polarity) as specified by the Passive State Select bit PSLR.PSL63. If the
modulated output signal is in the passive state, the level specified directly by PSL63 is output. If it is in the
active state, the inverted level of PSL63 is output. This allows the user to adapt the polarity of an active output
signal to the connected circuitry.
The PSL63 bit has a shadow register to allow for updates with the T13 shadow transfer signal (T13_ST) without
undesired pulses on the output lines. A read action returns the actually used value, whereas a write action
targets the shadow bit. Providing a shadow register for the PSL value as well as for other values related to the
generation of the PWM signal facilitates a concurrent update by software for all relevant parameters.
CCU6_MCA05534
Level
Select
COUT63
COUT63_O
CC63_O
T13
State Selection
CC63ST
CC63ST
T13IM
COUT63PS
T12 Output
Modulation
PSL63
Output Level
Selection
T13
State Bit
CC63ST
ECT13O
T13 Output
Modulation
Output
Modulation