
Interrupt Controller Modules
Freescale Semiconductor
14-11
14.2.9
Interrupt Control Register (ICR0n, ICR1n, (n = 00, 01, 02, ..., 63))
Each ICR register specifies the interrupt level (1–7) for the corresponding interrupt source. These registers
are cleared by reset and should be programmed with the appropriate levels before interrupts are enabled.
When multiple interrupt requests are programmed to the same level number, they are processed in a
descending request number order. As an example, if requests 63, 62, 2, and 1 are programmed to a common
level, request 63 is processed first, then request 62, then request 2, and finally request 1.
This definition allows software maximum flexibility in grouping interrupt request sources within any
given priority level. The priority level in the ICRs directly corresponds to the interrupt level supported by
the ColdFire processor.
Address: 0xFC04_801F (SLMASK)
Access: User read/write
7
6
5
4
3
2
1
0
R
0
0
0
0
SLMASK
W
Reset:
0
0
0
0
1
1
1
1
Figure 14-11. Saved Level Mask Register (SLMASK)
Table 14-13. SLMASK Field Descriptions
Field
Description
7–4
Reserved, must be cleared.
3–0
SLMASK
Saved level mask. Defines the saved level mask. See the CLMASK field definition for more information on the specific
values.
Address: 0xFC04_8040 – 7F (ICR000 – ICR063)
0xFC04_C040 – 7F (ICR100 – ICR163)
Access: User read/write
7
6
5
4
3
2
1
0
R
0
0
0
0
0
LEVEL
W
Reset:
0
0
0
0
0
0
0
0
Figure 14-12. Interrupt Control Registers (ICR0n, ICR1n)
Table 14-14. ICRn Field Descriptions
Field
Description
7–3
Reserved, must be cleared.
2–0
LEVEL
Interrupt level. Indicates the interrupt level assigned to each interrupt input. A level of 0 effectively disables the
interrupt request, while a level 7 interrupt is given the highest priority.
If interrupt masking is enabled (ICONFIG[EMASK] = 1), the acknowledgement of a level-n request forces the
controller to automatically mask all interrupt requests of level-n and lower.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...