Motorola MPC533 Reference Manual page 750

MIOS14 Double Action Submodule (MDASM)
4 X 16-bit
Counter buses
Counter bus
select
MODE3 MODE2
Control register bits
17.9.1 MDASM Features
• Versatile 16-bit dual action unit allowing up to two events to occur before software
intervention is required
• Six software selectable modes allowing the MDASM to perform pulse width and
period measurements, PWM generation, single input capture and output compare
operations as well as port functions
• Software selection of one of the four possible 16-bit counter buses used for timing
operations
• Flag setting and possible interrupt generation after MDASM action completion
• Software selection of output pulse polarity
• Software selection of totem-pole or open-drain output
• Software readable output signal status
17-26
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
BSL1 BSL0
16-bit comparator A
16-bit Register A
16-bit Register B1
Register B
16-bit Register B2
16-bit comparator B
MODE1 MODE0
Figure 17-14. MDASM Block Diagram
MPC533 Reference Manual
FORCA FORCB WOR
Output
Output
flip-flop
buffer
EDPO L
Edge
detect
Request Bus
MIO Bus
Counter Bus Set
PIN
I/O signal
FLAG
MOTOROLA