![Freescale Semiconductor MPC5553 Скачать руководство пользователя страница 731](http://html1.mh-extra.com/html/freescale-semiconductor/mpc5553/mpc5553_reference-manual_2330655731.webp)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
18-24
Freescale Semiconductor
Table 18-11. ETPU_ECR Field Descriptions
Bits
Name
Description
0
FEND
Force end. Assertion terminates any current running thread as if an END instruction have
been executed. For more information, refer to the eTPU reference manual.
0 Normal operation.
1 Terminates current thread.
This bit is self-negating.
1
MDIS
Module disable internal stop. This is the low power stop bit. When MDIS is set, the engine
shuts down its internal clocks. TCR1 and TCR2 cease to increment, and input sampling
stops. The engine asserts the stop flag (STF) bit to indicate that it has stopped. However,
the BIU continues to run, and the host can access all registers except for the channel
registers
1
and writes to time base registers. More information on channel registers may be
found in
Section 18.4.2.4, “Channel Configuration and Control Registers
.” After MDIS is
set, even before STF asserts, data read from the channel registers is not meaningful, a Bus
Error is issued, and writes are unpredictable. When the MDIS bit is asserted while the
microcode is executing, the eTPU will stop when the thread is complete.
0 eTPU engine runs.
1 Commands engine to stop its clocks.
Stop completes on the next system clock after the stop condition is valid. The MDIS bit is
write-protected when ETPU_MCR[VIS]=1.
Note: After the MDIS has been switched from 1 to 0 or vice-versa, do not switch its value
again until STF is switched to the same value.
2
—
Reserved.
3
STF
Stop flag bit. Each engine asserts its stop flag (STF) to indicate that it has stopped. Only
then the host can assume that the engine has actually stopped. The eTPU system is fully
stopped when the STF bits of both eTPU engines are asserted. The engine only stops
when any ongoing thread is complete in this case.
0 The engine is operating.
1 The engine has stopped (after the local MDIS bit has been asserted)
Summarizing engine stop conditions, which STF reflects:
STF_A := (after stop completed) MDIS_A
STF_B := (after stop completed) MDIS_B
STF_A and STF_B mean STF bit from engine A and STF bit from engine B respectively.
4–7
—
Reserved.
8
HLTF
Halt mode flag. If eTPU engine entered halt state, this flag is asserted. The flag remains
asserted while the microengine is in halt state, even during a single-step or forced
instruction execution. Refer to the eTPU reference manual for further details about entering
halt mode.
0 eTPU engine is not halted.
1 eTPU engine is halted
9–12
—
Reserved.
Содержание MPC5553
Страница 5: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 2 Freescale Semiconductor...
Страница 21: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 xvi Freescale Semiconductor...
Страница 47: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 1 26 Freescale Semiconductor...
Страница 163: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 4 20 Freescale Semiconductor...
Страница 179: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 5 16 Freescale Semiconductor...
Страница 561: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 13 38 Freescale Semiconductor...
Страница 615: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 14 54 Freescale Semiconductor...
Страница 707: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 17 68 Freescale Semiconductor...
Страница 755: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 18 48 Freescale Semiconductor...
Страница 873: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 19 118 Freescale Semiconductor...
Страница 984: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 Freescale Semiconductor 21 41...
Страница 985: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 21 42 Freescale Semiconductor...
Страница 1019: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 22 34 Freescale Semiconductor...
Страница 1129: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 25 90 Freescale Semiconductor...
Страница 1207: ...Revision History 4 Freescale Semiconductor...