AN2527 Freescale Semiconductor / Motorola, AN2527 Datasheet - Page 18

• Manufacturer Part Number: AN2527
• Description: DC Motor with Dead-Time Correction - XOR version TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

AN2527/D
Synchronized Change
of PWM Prescaler
And Resolver
Reference Signals
Prescaler
Host Interface
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DC Motor with Dead-Time Correction – XOR version TPU Function Set (DCmDtXor) MOTOROLA
The DCmDtXor_res TPU function can inherit the Synchronization Signal
prescaler that is synchronously changed with PWM prescaler. Write the
synchronization signals presc_copy parameter address to the presc_addr
parameter to enable this mechanism. Write 0 to disable it, and in this case set
prescaler parameter to directly specify prescaler value.
move > 0
prescaler = 1
move < 0
prescaler = 2
3
Freescale Semiconductor, Inc.
2
For More Information On This Product,
|move|
Figure 10. Resolver reference signal adjustment examples
Written By CPU
Written By TPU
1
1
1
center_time
center_time
0
0
0
T
T
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Channel Function Select
Channel Priority
Host Service Bits (HSR)
|move|
Name
Table 14. DCmDtXor_res Control Bits
center_time
center_time
center_time
T
T
T
DCmDtXor_res function number
00 – Channel Disabled
01 – Low Priority
10 – Middle Priority
11 – High Priority
00 – No Host Service Request
01 – Not used
10 – Initialization
11 – Not used
(Assigned during assembly the
DPTRAM code from library TPU
functions)
Written by both CPU and TPU
Not Used
Options
center_time
T