MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
18-35
18.4.2.3.3
eTPU Channel Interrupt Overflow Status Register (ETPU_CIOSR)
An interrupt overflow occurs when an interrupt is issued for a channel when the previous interrupt status
bit for the same channel has not been cleared. Interrupt overflow status from all channels are grouped in
ETPU_CIOSR. The bits are mirrored by the channels’ status/control registers. For information about
channel status registers and overflow, refer to
Section 18.4.2.4.3, “eTPU Channel n Status Control
,” and the eTPU reference manual.
NOTE
The host must write 1 to clear an interrupt overflow status bit.
Table 18-17. ETPU_CDTRSR Field Descriptions
Bits
Name
Description
0–31
DTRSn
Channel n data transfer request status.
0 Indicates that channel n has no pending data transfer request.
1 Indicates that channel n has a pending data transfer request.
To clear a status bit, the host must write 1 to it.
For details about data transfer requests refer to the eTPU reference manual.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R CIOS
31
CIOS
30
CIOS
29
CIOS
28
CIOS
27
CIOS
26
CIOS
25
CIOS
24
CIOS
23
CIOS
22
CIOS
21
CIOS
20
CIOS
19
CIOS
18
CIOS
17
CIOS
16
W w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reg Addr
eTPU A: Base + 0x0_0220 / eTPU B: Base + 0x0_0224
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R CIOS
15
CIOS
14
CIOS
13
CIOS
12
CIOS
11
CIOS
10
CIOS
9
CIOS
8
CIOS
7
CIOS
6
CIOS
5
CIOS
4
CIOS
3
CIOS
2
CIOS
1
CIOS
0
W w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reg Addr
eTPU A: Base + 0x0_0220 / eTPU B: Base + 0x0_0224
Figure 18-16. eTPU Channel Interrupt Overflow Status Register (ETPU_CIOSR)
Table 18-18. ETPU_CIOSR Field Descriptions
Bits
Name
Description
0–31
CIOSn
Channel n interrupt overflow status.
0 indicates that no interrupt overflow occurred in the channel.
1 indicates that an interrupt overflow occurred in the channel.
To clear a status bit, the host must write 1 to it.
For details about interrupts refer to the eTPU reference manual.
Summary of Contents for MPC5553
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