Infineon Technologies TC1784, Руководство пользователя

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TC1784
System Control Unit (SCU)
User´s Manual 3-87 V1.1, 2011-05
32-bit SCU, V1.18
3.3.2.2 ERU Pin Connections
Figure 3-21 shows the ERU input connections.
Figure 3-21 ERU Inputs Overview
The inputs to the ERU can be selected from a large number of input signals. While some
of the inputs come directly from a pin, other inputs use signals from various peripheral
modules.
Usually, such signals would be selected for an ERU function when the input function to
the other module is not used otherwise, or the module is not used at all. However, it is
also possible to select a input which is actually needed in the other module, and to use
it also in the ERU to provide for certain trigger functions, eventually combined with other
signals (e.g. to generate an interrupt trigger in case a start of frame is detected at a
selected communication).
3.3.2.3 External Request Select Unit (ERS)
Each ERS combines four inputs to the one input signal of the respective input channel.
Figure 3-22 shows the structure of this block.
In addition to the direct choice of either input Ax or Bx or their inverted values, the
possible logical combinations for two selected inputs are a logical AND or a logical OR.
ERU_Inputs _Overview_67.vsd
ERS0
Input 00
Input 01
Input 02
Input 03
P3.10
GPTA0_TRIG01
MSC0_FCLP
P0.14
ERS1
Input 10
Input 11
Input 12
Input 13
P3.11
P0.15
MSC1_FCLP
ERS2
Input 20
Input 21
Input 22
Input 23
P0.6
ERS3
Input 30
Input 31
Input 32
Input 33
P0.7
GPTA 0_TRIG07 GPTA 0_TRIG05
Not connected Not connected
Not connected
Not connected Not connected