PXR40RM Datasheet, PDF (274/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

System Integration Unit (SIU)
SIU
From chip-level signals
external to the SIU
To chip-level signal
external to the SIU
SIU_ISEL4-7, SIU_EIISR, and SIU_DISR
Figure 7-49. Four-to-One Internal Multiplexing Block Diagram
7.4.5.1 eQADC External Trigger Input Multiplexing
The eQADC external trigger inputs can connect to one of the following pins:
• External pin
• eTPU channel
• eMIOS channel
• Periodic interrupt timer
The input source for each eQADC external trigger is configured in the eQADC Command FIFO Trigger
Source Select - IMUX Select Registers (SIU_ISEL4-7). For example, you can select one of the following
signals to source the ETRIG[0] input trigger for the eQADC:
• TXDC_ETRIG[0]_GPIO[244] pin
• ETPUA[30] output channel
• EMIOS[10] output channel
• Extended trigger source selection (see Table 7-27)
All ETRIG inputs are multiplexed in the same manner. If an eTPU or eMIOS channel is selected as an
ETRIG input to the eQADC, you can activate the alternate function of that eTPU or eMIOS signal on the
external pin.
7-92
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor