DSP56857 datasheet(188/662 Pages) FREESCALE

188 / 662 page

5685X Digital Signal Controller User Manual, Rev. 4

8-10

Freescale Semiconductor

•

11 = IRQ is priority level 3

8.7.3 Interrupt Priority Register 2 (IPR2)

Figure 8-5. Interrupt Priority Register 2 (IPR2)

See Programmer’s Sheet on Appendix page B - 23

8.7.3.1 DMA 2 Done Interrupt Priority Level (DMA2 IPL)—Bits 15–14

This bit field is used to set the interrupt priority levels for certain EOnCE IRQs. These IRQs are

limited to priorities one through three and are disabled by default.

•

00 = IRQ disabled (default)

•

01 = IRQ is priority level 0

•

10 = IRQ is priority level 1

•

11 = IRQ is priority level 2

8.7.3.2 DMA 1 Done Interrupt Priority Level (DMA1 IPL)—Bits 13–12

This bit field is used to set the interrupt priority levels for certain EOnCE IRQs. These IRQs are

limited to priorities one through three and are disabled by default.

•

00 = IRQ disabled (default)

•

01 = IRQ is priority level 0

•

10 = IRQ is priority level 1

•

11 = IRQ is priority level 2

8.7.3.3 DMA 0 Done Interrupt Priority Level (DMA0 IPL)—Bits 11–10

This bit field is used to set the interrupt priority levels for certain EOnCE IRQs. These IRQs are

limited to priorities one through three and are disabled by default.

•

00 = IRQ disabled (default)

•

01 = IRQ is priority level 0

•

10 = IRQ is priority level 1

•

11 = IRQ is priority level 2

Base + $2

Read

DMA2 IPL

DMA1 IPL

DMA0 IPL

LOCK IPL

IRQB IPL

IRQA IPL

Write

Reset

000

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