System Configuration and Protection
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
6-37
6.2.2.2.9
Interrupt In-Service Registers (SISR2 and SISR3)
SISR2, SISR3 are 32-bit read/write registers. Each bit in the register corresponds to an interrupt request.
A bit is set if:
•
There is a pending interrupt request (SIPEND2/3), that is not masked by (SIMASK2/3), and
•
The BBC/IMPU acknowledges interrupt request and latches SIVEC value.
Once a bit is set, all requests with lower or equal priority become masked (i.e. they will not generate any
interrupt request to the RCPU) until the bit is cleared. A bit is cleared by writing a ‘1’ to it. Writing zero
has no effect.
6.2.2.3
System Protection Registers
6.2.2.3.1
System Protection Control Register (SYPCR)
The system protection control register (SYPCR) controls the system monitors, the software watchdog
period, and the bus monitor timing. This register can be read at any time, but can be written only once after
system reset.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field IRQ0
LVL0
IMB
IRQ0
IMB
IRQ1
IMB
IRQ2
IMB
IRQ3
IRQ1
LVL1
IMB
IRQ4
IMB
IRQ5
IMB
IRQ6
IMB
IRQ7
IRQ2
LVL2
IMB
IRQ8
IMB
IRQ9
SRESET
0000_0000_0000_0000
Addr
0x2F C050
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
LSB
31
Field
IMB
IRQ10
IMB
IRQ11
IRQ3 LVL4
IMB
IRQ12
IMB
IRQ13
IMB
IRQ14
IMB
IRQ15
IRQ4 LVL4
IMB
IRQ16
IMB
IRQ17
IMB
IRQ18
IMB
IRQ19
IRQ5 LVL5
SRESET
0000_0000_0000_0000
Figure 6-24. Interrupt In-Service Register 2 (SISR2)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
IMB
IRQ20
IMB
IRQ21
IMB
IRQ22
IMB
IRQ23
IRQ
6
LVL
6
IMB
IRQ24
IMB
IRQ25
IMB
IRQ26
IMB
IRQ27
IRQ
7
LVL
7
IMB
IRQ28
IMB
IRQ29
IMB
IRQ30
IMB
IRQ31
SRESET
0000_0000_0000_0000
Addr
0x2F C054
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
LSB
31
Field
—
SRESET
0000_0000_0000_0000
Figure 6-25. Interrupt In-Service Register 3 (SISR3)
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...