AN2529 Freescale Semiconductor / Motorola, AN2529 Datasheet - Page 21

• Manufacturer Part Number: AN2529
• Description: Standard Space Vector Modulation - XOR version TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

Resolver Reference
Signal for Standard
Space Vector
Modulation – XOR
version
(svmStdXor_res)
MOTOROLA
HSR = 10
HSR = 10
INIT
INIT
center_time
center_time
Standard Space Vector Modulation – XOR version TPU Function Set (svmStdXor)
S1
S1
T
T
S1
S1
The svmStdXor_res TPU function uses information read from the StdDtXor_R
and svmStdDtXor_T functions, the actual PWM center times and the PWM
periods. This allows a signal to be generated, which tracks the changes of the
PWM period and is always synchronized with the PWM. The resolver reference
signal is a 50% duty-cycle signal with a period equal to prescaler or
synchronization channel presc_copy PWM periods (see next paragraph). The
low to high transition of the pulse can be adjusted by a parameter, either
negative or positive, to go a number of TCR1 TPU cycles before or after the
PWM period center time.
S2
S2
Freescale Semiconductor, Inc.
Figure 8. svmStdXor_sync state diagram
For More Information On This Product,
S2
S2
Figure 7. svmStdXor_sync timing
Go to: www.freescale.com
center_time
center_time
S3
S3
T
T
S3
S3
Detailed Function Description
center_time
center_time
S1
S1
T
T
S2
S2
AN2529/D
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