MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
18-45
18.4.2.4.4
eTPU Channel n Host Service Request Register (ETPU_CnHSRR)
ETPU_C
n
HSRR is used by the MPC5553/MPC5554 core to issue service requests to the channel.
18.5
Functional Description
Refer to the eTPU User’s Manual for information regarding the functional description of the eTPU
module.
18–29
—
Reserved.
30–31
FM
[0:1]
Channel function mode.
1
Each function may use this field for specific configuration. These
bits can be tested by microengine code.
1
These bits are equivalent to the TPU/TPU2/TPU3 host sequence (HSQ) bits.
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
Reg Addr
Channel_Registe 0x08
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
0
0
0
0
0
0
0
0
0
0
0
0
0
HSR
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reg Addr
Channel_Registe 0x08
Figure 18-24. eTPU Channel n Host Service Request Register (ETPU_CnHSRR)
Table 18-28. ETPU_CnHSRR Field Descriptions
Bits
Name
Description
0–28
—
Reserved.
29–31
HSR
[0:2]
Host service request. Used by the host core to request service to the
channel
• HSR = 000: no host service request pending
• HSR
000: function-dependent host service request pending.
The HSR value turns to 000 automatically at the end of microengine service
for that channel. The host should write HSR
0 only when HSR = 0. Writing
HSR = 000 withdraws a pending request if the scheduler has not started to
resolve the entry point, however after the scheduler starts resolving, the
service thread will not be aborted.
Table 18-27. ETPU_CnSCR Field Descriptions (Continued)
Bits
Name
Description
Summary of Contents for MPC5553
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