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參數(shù)資料
| 型號(hào)： | AN2528 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Standard Space Vector Modulation TPU Function Set (svmStd) |
| 中文描述： | 空間矢量調(diào)制標(biāo)準(zhǔn)聚氨酯函數(shù)集（svmStd） |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 514K |
| 代理商： | AN2528 |
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AN2528/D
Detailed Function Description
Standard Space Vector Modulation TPU Function Set (svmStd)
For More Information On This Product,
Go to: www.freescale.com
15
Figure 8. Worst case timing – case two
The time slot sequences at the top of both figures shows when a state of a high
(H), middle (M) or low (L) priority is serviced in the worst case. To calculate the
MPW
follow these steps:
Get the lengths of the longest states.
–
It is necessary to know the lengths of the longest states within all
functions of each priority group. The initialization states are not
considered – only the running states. Let's denote
H
as the time
period of the longest state within all functions running on high priority
(Do not consider svmStd functions). Let's denote
M
as the time
period of the longest state within all functions running on middle
priority and
L
as the time period of the longest state within all
functions running on low priority.
Decide which case of timing can occure.
–
The first case can occure when the
DT
(in IMB clock cycles) is less
than TST +
H
+ TST +
M
+ TST+4 + LH_C5 + TST+4 +
L
(see
Figure
8
) that is 4*TST + 8 +
H
+
M
+
L
+ LH_C5 that is 76 +
H
+
M
+
L
IMB
clock cycles.
if
DT
(in IMB clock cycles) < 76 +
H
+
M
+
L
then – case one
else – case two
Calculate
MPW
based on case one or case two.
–
In
case one
the MPW is (according to
Figure 7
)
TST +
H
+ TST +
M
+ TST+4 + LH_C5 + TST +
L
+ TST+4 + HL –
DT
that is 92 +
H
+
M
+
L
–
DT
IMB clock cycles.
MPW
(in IMB clock cycles) = 92 +
H
+
M
+
L
–
DT
HL
LH_C5
bottom channel
top channel
MPW
latency
DT
H
TST+4
L
H
H
M
TST+4
TST
TST
time slot sequence
M or L
TST
H
TST
TST+4
F
Freescale Semiconductor, Inc.
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AN2528D | Standard Space Vector Modulation TPU Function Set (svmStd) |
| AN2701 | PWM Generation with the HC08 Timer |
| AN2821 | eTPU Host Interface |
| AN2848 | Programming the eTPU |
| AN2897 | Using the eTPU Angle Clock |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN25-28 | 制造商: 功能描述: |
| AN2528D | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Standard Space Vector Modulation TPU Function Set (svmStd) |
| AN2531 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation with Dead-Time Correction ?XOR version TPU Function Set |
| AN2531/D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation with Dead-Time Correction ?XOR version TPU Function Set |
| AN2532 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation ? 3 outputs version TPU Function Set (svmStd3) |
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