56F8322 datasheet(74/136 Pages) FREESCALE

74 / 136 page

56F8322 Techncial Data, Rev. 16

Freescale Semiconductor

Preliminary

5.6.14.2

Fast Interrupt 0 Vector Address High (FIVAH0)—Bits 4–0

The upper five bits of the vector address used for Fast Interrupt 0. This register is combined with FIVAL0

to form the 21-bit vector address for Fast Interrupt 0 defined in the FIM0 register.

5.6.15

Fast Interrupt 1 Match Register (FIM1)

Figure 5-17 Fast Interrupt 1 Match Register (FIM1)

5.6.15.1

Reserved—Bits 15–7

This bit field is reserved or not implemented. It is read as 0, but cannot be modified by writing.

5.6.15.2

Fast Interrupt 1 Vector Number (FAST INTERRUPT 1)—Bits 6–0

This value determines which IRQ will be a Fast Interrupt 1. Fast interrupts vector directly to a service

routine based on values in the Fast Interrupt Vector Address registers without having to go to a jump table

first; see Section 5.3.3 for details. IRQs used as fast interrupts must be set to priority level 2. Unexpected

results will occur if a fast interrupt vector is set to any other priority. Fast interrupts automatically become

the highest-priority level 2 interrupt, regardless of their location in the interrupt table, prior to being

declared as fast interrupt. Fast Interrupt 0 has priority over Fast Interrupt 1. To determine the vector

number of each IRQ, refer to Table 4-3.

5.6.16

Fast Interrupt 1 Vector Address Low Register (FIVAL1)

Figure 5-18 Fast Interrupt 1 Vector Address Low Register (FIVAL1)

5.6.16.1

Fast Interrupt 1 Vector Address Low (FIVAL1)—Bits 15–0

The lower 16 bits of the vector address used for Fast Interrupt 1. This register is combined with FIVAH1

to form the 21-bit vector address for Fast Interrupt 1 defined in the FIM1 register.

5.6.17

Fast Interrupt 1 Vector Address High Register (FIVAH1)

Figure 5-19 Fast Interrupt 1 Vector Address High Register (FIVAH1)

Base + $E

Read

FAST INTERRUPT 1

Write

RESET

00000

0000000

0000

Base + $F

Read

FAST INTERRUPT 1 VECTOR

ADDRESS LOW

Write

RESET

00000

0000000

0000

Base + $10

Read

FAST INTERRUPT 1

VECTOR ADDRESS HIGH

Write

RESET

00000

0000000

0000

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