MC56F8323EVME Freescale Semiconductor, MC56F8323EVME Datasheet - Page 59

• Manufacturer Part Number: MC56F8323EVME
• Description: BOARD EVALUATION MC56F8323
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of MC56F8323EVME

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MC56F8322 and MC56F8323
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: 56800/E
• Core Sub-architecture: 56800/E
• Silicon Core Number: MC56F
• Silicon Family Name: MC56F83xx
• Rohs Compliant: Yes
• For Use With/related Products: MC56F8322, MC56F8323
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.4 Block Diagram
5.5 Operating Modes
The ITCN module design contains two major modes of operation:
Freescale Semiconductor
Preliminary
•
•
Functional Mode
The ITCN is in this mode by default.
Wait and Stop Modes
During Wait and Stop modes, the system clocks and the 56800E core are turned off. The ITCN will signal
a pending IRQ to the System Integration Module (SIM) to restart the clocks and service the IRQ. An IRQ
can only wake up the core if the IRQ is enabled prior to entering the Wait or Stop mode. Also, the IRQA
signal automatically becomes low-level sensitive in these modes, even if the control register bits are set to
make them falling-edge sensitive. This is because there is no clock available to detect the falling edge.
A peripheral which requires a clock to generate interrupts will not be able to generate interrupts during Stop
mode. The FlexCAN module can wake the device from Stop mode, and a reset will do just that, or IRQA
and IRQB can wake it up.
INT1
INT82
Decode
Decode
Priority
Priority
Level
Level
2 -> 4
2 -> 4
Figure 5-1 Interrupt Controller Block Diagram
56F8323 Technical Data, Rev. 17
Level 0
Level 3
Encoder
Encoder
Priority
Priority
82 -> 7
82 -> 7
7
7
any0
any3
IACK
SR[9:8]
CONTROL
PIC_EN
INT
VAB
IPIC
Block Diagram
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