Specifications

The Pace-Setting Performance and Features of the 56F8300 Hybrid Controllers
MOTOROLA Motorola 56F8300 Hybrid Controller Family 19
Figure 1-8. Sample Use of Quad Timer
The powerful features of the Quad timer module, the ability to flexibly connect modules to external
I/O pins, and its flexible operating frequency/clocking, lower system costs by simplifying external
circuitry and software.
3.2.5 Quadrature Decoder
The 56F8300 Quadrature Decoder is a very feature-rich peripheral that not only provides the interface
to a encoder but also provides added features which facilitate software development. Some of the
features and benefits of the Quadrature Decoder are:
• Four inputs per decoder
— Phase A
— Phase B
— Index
— Home
• Captures all four transitions on two-phased inputs
— Extracts actual shaft position and direction
— 32-bit position counter; initialized by software or external events
— Pre-loadable 16-bit revolution register
• Index input
— Resets position counter
— Begins integrating a new revolution value
• Home input
— Initializes position counter
• Configurable glitch filter for inputs
• Can operate as single-phase pulse accumulators
• Watchdog timer detects non-rotating shaft condition
Timer
Low Pass
Filter
Unity Power
Amplifier
Amplifier
DAC
Mic
A/D
Quad Timer used in PWM mode
provides DAC function for 56F8300
56F8300
Timer
Low Pass
Filter
Unity Power
Amplifier
Amplifier
DAC
Mic
A/D
Timer
Low Pass
Filter
Unity Power
Amplifier
Amplifier
DAC
Mic
A/D
Quad Timer used in PWM mode
provides DAC function for 56F8300
56F8300
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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