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System Integration Unit (SIU)
MPC5566 Microcontroller Reference Manual, Rev. 2
6-122
Freescale Semiconductor
Each IRQ pin has a programmable filter for rejecting glitches on the IRQ signals. The filter length for the
IRQ pins is specified in the external IRQ digital filter register (SIU_IDFR).
Figure 6-170. SIU DMA/Interrupt Request Diagram
6.4.4
GPIO Operation
All GPIO functions for the device are provided by the SIU. Each device pad that has a GPIO signal has a
pin configuration register (PCR) in the SIU where the GPIO function is selected. In addition, each device
GPIO signal has an input data register (SIU_GPDI
n
) and an output data register (SIU_GPDO
n
).
6.4.5
Internal Multiplexing
The internal multiplexing select registers (SIU_ETISR, SIU_EIISR, and SIU_DISR) select the input
source for the following components:
•
eQADC external trigger input signals
•
SIU external interrupt request signals
•
DSPI signals used for chaining serial and parallel DSPI modules
Interrupt
controller
DMA/
interrupt
select
•
•
•
•
•
0
1
2
3
4
15
IMUX
Interrupt
request
DMA
request
DMA
•
•
•
0
1
15
SIU_OSR
SIU_EISR
Overrun
request
EIRQ pins
or
internal
source
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Interrupt
request
SIU_DISR
SIU
Summary of Contents for MPC5566
Page 81: ...Introduction MPC5566 Microcontroller Reference Manual Rev 2 1 24 Freescale Semiconductor...
Page 135: ...Signal Description MPC5566 Microcontroller Reference Manual Rev 2 2 54 Freescale Semiconductor...
Page 189: ...Reset MPC5566 Microcontroller Reference Manual Rev 2 4 20 Freescale Semiconductor...
Page 603: ...Flash Memory MPC5566 Microcontroller Reference Manual Rev 2 13 38 Freescale Semiconductor...
Page 609: ...SRAM MPC5566 Microcontroller Reference Manual Rev 2 14 6 Freescale Semiconductor...
Page 1073: ...MPC5566 Microcontroller Reference Manual Rev 2 22 36 Freescale Semiconductor...
Page 1185: ...Nexus MPC5566 Microcontroller Reference Manual Rev 2 25 92 Freescale Semiconductor...