MC56F8346 Freescale Semiconductor, Inc, MC56F8346 Datasheet - Page 109

• Manufacturer Part Number: MC56F8346
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

5.6.30.9
This bit controls whether the external IRQA interrupt is edge- or level-sensitive. During Stop and Wait
modes, it is automatically level-sensitive.
5.7 Resets
5.7.1
The ITCN provides the 56800E core with a reset vector address whenever RESET is asserted. The reset
vector will be presented until the second rising clock edge after RESET is released.
5.7.2
After reset, all of the ITCN registers are in their default states. This means all interrupts are disabled,
except the core IRQs with fixed priorities:
These interrupts are enabled at their fixed priority levels.
Part 6 System Integration Module (SIM)
6.1 Overview
The SIM module is a system catchall for the glue logic that ties together the system-on-chip. It controls
distribution of resets and clocks and provides a number of control features. The system integration module
is responsible for the following functions:
Freescale Semiconductor
Preliminary
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0 = IRQA interrupt is a low-level sensitive (default)
1 = IRQA interrupt is falling-edge sensitive.
Illegal Instruction
SW Interrupt 3
HW Stack Overflow
Misaligned Long Word Access
SW Interrupt 2
SW Interrupt 1
SW Interrupt 0
SW Interrupt LP
Reset sequencing
Clock generation & distribution
Stop/Wait control
Pull-up enables for selected peripherals
System status registers
Registers for software access to the JTAG ID of the chip
Reset Handshake Timing
ITCN After Reset
IRQA Edge Pin (IRQA Edg)—Bit 0
56F8346 Technical Data, Rev. 15
Resets
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