Datasheet

56F8365 Technical Data, Rev. 9

82 Freescale Semiconductor

• 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

and IRQB

signals automatically become 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, and a reset will do just that, or IRQA

and

IRQB

can wake it up.

5.6 Register Descriptions

A register address is the sum of a base address and an address offset. The base address is defined at the

system level and the address offset is defined at the module level. The ITCN peripheral has 24 registers.

Table 5-3 ITCN Register Summary

(ITCN_BASE = $00F1A0)

Acronym

Base Address + Register Name Section Location

IPR0 $0 Interrupt Priority Register 0 5.6.1

IPR1 $1 Interrupt Priority Register 1 5.6.2

IPR2 $2 Interrupt Priority Register 2 5.6.3

IPR3 $3 Interrupt Priority Register 3 5.6.4

IPR4 $4 Interrupt Priority Register 4 5.6.5

IPR5 $5 Interrupt Priority Register 5 5.6.6

IPR6 $6 Interrupt Priority Register 6 5.6.7

IPR7 $7 Interrupt Priority Register 7 5.6.8

IPR8 $8 Interrupt Priority Register 8 5.6.9

IPR9 $9 Interrupt Priority Register 9 5.6.10

VBA $A Vector Base Address Register 5.6.11

FIM0 $B Fast Interrupt 0 Match Register 5.6.12

FIVAL0 $C Fast Interrupt 0 Vector Address Low Register 5.6.13

FIVAH0 $D Fast Interrupt 0 Vector Address High Register 5.6.14

FIM1 $E Fast Interrupt 1 Match Register 5.6.15

FIVAL1 $F Fast Interrupt 1 Vector Address Low Register 5.6.16

FIVAH1 $10 Fast Interrupt 1 Vector Address High Register 5.6.17