Freescale Semiconductor MCF51QE128RM manual Intcfrc Field Descriptions

Models: MCF51QE128RM

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Chapter 8 Interrupt Controller (CF1_INTC)

NOTE

Take special notice of the bit numbers within this register, 39–32. This is for compatibility with previous ColdFire interrupt controllers.

Offset: CF1_INTC_BASE + 0x13 (INTC_FRC)

Access: Read/Write

R

W Reset

39

38

37

36

35

34

33

32

0

LVL1

LVL2

LVL3

LVL4

LVL5

LVL6

LVL7

 

 

 

 

 

 

 

 

 

 

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

Figure 8-2. INTC_FRC Register

 

 

Table 8-4. INTC_FRC Field Descriptions

 

 

 

Field

 

Description

 

 

39

Reserved, must be cleared.

 

 

38

Force Level 1 interrupt.

LVL1

0

Negates the forced level 1 interrupt request.

 

1

Forces a level 1 interrupt request.

 

 

37

Force Level 2 interrupt.

LVL2

0

Negates the forced level 2 interrupt request.

 

1

Forces a level 2 interrupt request.

 

 

36

Force Level 3 interrupt.

LVL3

0

Negates the forced level 3 interrupt request.

 

1

Forces a level 3 interrupt request.

 

 

35

Force Level 4 interrupt.

LVL4

0

Negates the forced level 4 interrupt request.

 

1

Forces a level 4 interrupt request.

 

 

34

Force Level 5 interrupt.

LVL5

0

Negates the forced level 5 interrupt request.

 

1

Forces a level 5 interrupt request.

 

 

33

Force Level 6 interrupt.

LVL6

0

Negates the forced level 6 interrupt request.

 

1

Forces a level 6 interrupt request.

 

 

32

Force Level 7 interrupt.

LVL7

0

Negates the forced level 7 interrupt request.

 

1

Forces a level 7 interrupt request.

 

 

 

8.3.2.2INTC Programmable Level 6, Priority {7,6} Registers (INTC_PL6P{7,6})

The two level seven interrupt requests (the IRQ package pin and the low-voltage detection interrupt) cannot have their levels reassigned. However, any of the remaining peripheral interrupt requests can be reassigned as the highest priority maskable requests using these two registers. The vector number associated with the interrupt requests is not changed. Rather, only the interrupt request's level and priority are altered, based on the contents of the INTC_PL6P{7,6} registers.

MCF51QE128 MCU Series Reference Manual, Rev. 3

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Freescale Semiconductor MCF51QE128RM manual Intcfrc Field Descriptions