AN2367 Freescale Semiconductor / Motorola, AN2367 Datasheet - Page 2

• Manufacturer Part Number: AN2367
• Description: Using the Multiphase Motor Commutation TPU Function (COMM)with the MPC500 Family
• Manufacturer: Freescale Semiconductor / Motorola

Freescale Semiconductor, Inc.
Sensored Mode
2.1
Sensored Mode
Sensored Mode is designed to work with the Hall effect decode (HALLD) TPU function. HALLD is an
input function that decodes either two or three Hall effect or optical sensors, and a CPU-supplied direction
input, into a state number. HALLD writes this state number into the parameter RAM of the COMM function
master channel and then issues a link to that channel. On receipt of the link, COMM obtains the output pin
configuration that corresponds to the new commutation state from a table in parameter RAM, and
subsequently outputs the new commutation state. The user has complete control over the commutation
sequence via the programmable state table in the COMM function and a CPU force feature which allows
the CPU to force a particular commutation state. Figure 1 shows a typical Hall effect set-up and control
waveforms.
2
Using the Multiphase Motor Commutation TPU Function
MOTOROLA
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