System Integration Unit (SIU)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
6-20
Freescale Semiconductor
6.3.1.8
Overrun Request Enable Register (SIU_ORER)
The SIU_ORER contains bits to enable an overrun if the corresponding flag bit is set in the SIU_OSR. If
the overrun request enable bit and the flag bit are set, the single combined overrun request from the SIU
to the interrupt controller is asserted.
Figure 6-9. Overrun Request Enable Register (SIU_ORER)
The following table describes the fields in the overrun request enable register:
Address: Base + 0x0024
Access: R/W
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
ORE15
ORE14 ORE13 ORE12 ORE11 ORE10 ORE9 ORE8 ORE7 ORE6 ORE5 ORE4 ORE3 ORE2 ORE1
ORE0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 6-15. SIU_ORER Field Descriptions
Field
Function
0–15
Reserved
16–31
ORE
n
Overrun request enable
n. E
nables the overrun request when an overrun occurs on the IRQ[
n
] pin. Bit 31 (ORE0) is
the enable overrun flag for IRQ[0]; bit 16 (ORE15) is overrun flag for IRQ[15].
0
Overrun request is disabled.
1
Overrun request is enabled.
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