AN2525 Freescale Semiconductor / Motorola, AN2525 Datasheet - Page 3

• Manufacturer Part Number: AN2525
• Description: DC Motor - XOR version TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

Function Set Configuration
MOTOROLA
None of the TPU functions in the DC Motor – XOR version TPU function set can
be used separately. The DCmXor_C and DCmXor_T functions have to be used
together. The DCmXor_C runs on pins SW1_1 and SW3_1 – see
DCmXor_T runs on the other pins. One or more channels running
Synchronization Signal for DCmXor as well as Resolver Reference Signals for
DCmXor functions can be added. They can run with different settings on each
channel. The function Fault Input for DCmXor can also be added. It is
recommended to use it on channel 15, and to set the hardware option that
disables all TPU output pins when the channel 15 input signal is low (DTPU bit
= 1). This ensures that the hardware reacts quickly to a pin fault state. Note that
it is not only the PWM channels, but all TPU output channels, including the
synchronization signals, that are disabled in this configuration.
Table 1
Table 1. DCmXor TPU function set configuration options and restrictions
Table 2
DCmXor_C
DCmXor_T
DCmXor_sync
DCmXor_res
DCmXor_fault
DC Motor – XOR version TPU Function Set (DCmXor)
TPU function
Freescale Semiconductor, Inc.
For More Information On This Product,
shows the configuration options and restrictions.
shows an example of configuration.
Channel
10
11
15
0
1
2
3
4
5
6
7
Go to: www.freescale.com
Mandatory
mandatory
mandatory
Optional/
optional
optional
optional
Table 2. Example of configuration
How many
channels
1 or more
1 or more
DCmXor_sync
TPU function
DCmXor_fault
DCmXor_res
DCmXor_C
DCmXor_C
DCmXor_T
DCmXor_T
DCmXor_T
DCmXor_T
DCmXor_T
DCmXor_T
2
6
1
any 2 channels
any 6 channels
any channels
any channels
any, recommended is 15 and DTPU bit
set
Assignable channels
Function Set Configuration
Priority
high
high
high
high
high
high
high
high
high
low
low
Figure
AN2525/D
1. The
3