MMC2107 - Freescale Semiconductor

Freescale Semiconductor, Inc.
Interrupt Controller Module
Functional Description
7.7.2.9 Priority Level Select Registers
There are 40 read/write, 8-bit priority level select registers
PLSR0–PLSR39, one for every interrupt source. The PLSRx register
assigns a priority level to interrupt source x.
Address: 0x00c5_0040 through 0x00c5_0067
Bit 7 6 5 4 3 2 1 Bit 0
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Freescale Semiconductor, I
7.8 Functional Description
Read: 0 0 0
Write:
PLS[4:0] — Priority Level Select Field
The PLS[4:0] field assigns a priority level from 0 to 31 to the
corresponding interrupt source. Reset clears PLS[4:0].
The interrupt controller collects interrupt requests from multiple interrupt
sources and provides an interface to the processor core interrupt logic.
Interrupt controller functions include:
• Interrupt source prioritization
• Fast and normal interrupt requests
• Autovectored and vectored interrupt requests
• Interrupt configuration
PLS4 PLS3 PLS2 PLS1 PLS0
Reset: 0 0 0 0 0 0 0 0
= Writes have no effect and the access terminates without a transfer error exception.
Figure 7-11. Priority Level Select Registers (PLSR0–PLSR39)
Table 7-3. Priority Select Encoding
PLS[4:0] Priority Level Vector Number
00000 0 (lowest) 00000
00001–11110 1–30 00001–11110
11111 31 (highest) 11111
MMC2107 – Rev. 2.0
Technical Data
MOTOROLA Interrupt Controller Module 167
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