Register Descriptions
56F8322 Technical Data, Rev. 10.0
Freescale Semiconductor 57
Preliminary
5.6.1 Interrupt Priority Register 0 (IPR0)
Figure 5-3 Interrupt Priority Register 0 (IPR0)

5.6.1.1 Reserved—Bits 15–14

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

5.6.1.2 EOnCE Breakpoint Unit 0 Interrupt Priority Level (BKPT_U0 IPL)—

Bits13–12

This field is used to set the interrupt priority levels for IRQs. This IRQ is limited to priorities 1 through 3.
It is disabled by default.
00 = IRQ disabled (default)
01 = IRQ is priority level 1
10 = IRQ is priority level 2
11 = IRQ is priority level 3

5.6.1.3 EOnCE Step Counter Interrupt Priority Level (STPCNT IPL)—

Bits 11–10
This field is used to set the interrupt priority level for IRQs. This IRQ is limited to priorities 1 through 3.
It is disabled by default.
00 = IRQ disabled (default)
01 = IRQ is priority level 1
10 = IRQ is priority level 2
11 = IRQ is priority level 3

5.6.1.4 Reserved—Bits 9–0

This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
5.6.2 Interrupt Priority Register 1 (IPR1)
Figure 5-4 Interrupt Priority Register 1 (IPR1)
Base + $0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Read 0 0 BKPT_U0IPL STPCNT IPL 0 0 0 0 0 0 0 0 0 0
Write
RESET 00 0 0 0 00 000000000
Base + $1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Read 0 0 0 0 0 0 0 0 0 0 RX_REG IPL TX_REG IPL TRBUF IPL
Write
RESET 0000000000000000