mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 183

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
7.2.2.2 Interrupt Control Register 2 (ICR2)
ICR2, Figure 7-3, is used to configure interrupts from various on-chip sources.
Table 7-3 describes ICR2 fields.
7.2.2.3 Interrupt Control Register 3 (ICR3)
ICR3, Figure 7-4, is used to configure interrupts from various on-chip sources.
Reset
Reset
Reset
Reset
6–4, 2–0
Field USB4PI
Field
Field UART1PI
Field USB0PI
Addr
Addr
R/W
31, 27,
23, 19,
15, 11,
30–28,
26–24,
22–20,
18–16,
R/W
14-12,
10–8,
Bits
7, 3
DMAPI
31
15
31
15
Name
IPL
PI
30
14
30
14
UART11IPL
USB41IPL
USB0IPL
DMAIPL
Pending interrupt. Writing a 1 enables the value for the corresponding IPL field to be set. Note:
for external interrupts only, writing a one to this bit clears the corresponding interrupt latch.
The external interrupt must be toggled before another interrupt is latched. For all on-chip
interrupt sources, this bit is cleared when the interrupt is cleared in the module registers.
0 No interrupt pending
1 An interrupt is pending.
Interrupt priority level. Specifies the IPL for the corresponding interrupt source. This field can
be changed only when a 1 is simultaneously written to the corresponding PI bit.
000 The corresponding INT source is inhibited and cannot generate interrupts. The state of
001–111The corresponding INT source is enabled and generates an interrupt with the
indicated priority level.
Figure 7-3. Interrupt Control Register 2 (ICR2)
Figure 7-4. Interrupt Control Register 3 (ICR3)
the signal can still be read in the ISR.
28
12
28
12
UART2PI
Table 7-3. ICR Field Descriptions
USB1PI
USB5PI
ERXPI
27
11
27
11
Chapter 7. Interrupt Controller
26
10
26
10
UART2IPL
USB1IPL
USB5IPL
ERXIPL
0000_0000_0000_0000
0000_0000_0000_0000
0000_0000_0000_0000
0000_0000_0000_0000
MBAR + 0x024
MBAR + 0x028
24
24
8
8
R/W
R/W
USB2PI
USB6PI
PLIPPI
ETXPI
Description
23
23
7
7
22
22
6
6
USB2IPL
USB6IPL
PLIPIPL
ETXIPL
Interrupt Controller Registers
20
20
4
4
ENTCPI
USB3PI
USB7PI
PLIAPI
19
19
3
3
18
18
2
2
ENTCIPL
USB3IPL
USB7IPL
PLIAIPL
16
16
7-5
0
0