AN2519 Freescale Semiconductor / Motorola, AN2519 Datasheet - Page 13

• Manufacturer Part Number: AN2519
• Description: 3Sin with Dead-Time Correction - XOR version TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

Performance
MOTOROLA
3Sin with Dead-Time Correction – XOR version TPU Function Set (3SinDtXor)
The maximum PWM frequency is 38kHz (PWM period T = 525). This can be
achieved when only 3SinDtXor_R and 3SinDtXor_T run on the TPU and the
IMB clock is 40MHz. When other functions run on the same TPU the minimum
Theta
dTheta
T
prescaler
DT
CPU14
LD_OK
fault_pinstate
Theta_buf
Other parameters are just for TPU function inner use.
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 7. 3SinDtXor_T and 3SinDtXor_R parameter description
Parameter
Go to: www.freescale.com
Parameters written by both TPU and CPU
32-bit fractional
32-bit fractional
16-bit unsigned integer
16-bit unsigned integer
16-bit unsigned integer
16-bit unsigned integer
16-bit unsigned integer
0 or 1
32-bit fractional
Parameters written by TPU
Format
Stator Ref. Voltage Vector angle
Stator Reference Voltage Vector
PWM period in number of TCR1
The number of PWM periods
Dead-time in number of TCR1
Time of 14 IMB clocks in TCR1
0 ...... CPU can update
<>0 .. TPU can read variables:
CPU sets $0001 or $8001, TPU
If fault channel is used, state of
Actual Stator Reference Voltage
range <–1, 1) corresponds to
<–180
angle increment
range <–1, 1) corresponds to
<–180
TPU cycles
per reload of new values
TPU cycles
clocks.
variables
$0001 ... load Ampl, dTheta, T
$8001 ... load also Theta
sets 0
fault pin:
0 ... low
1 ... high
Vector angle
range <–1, 1) corresponds to
<–180
°
°
°
, 180
, 180
, 180
Detailed Function Description
Description
and prescaler only
°
°
°
)
)
)
AN2519/D
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