Microchip Technology Inc.

Cobus Van Eeden

Joseph Harry Julicher

Kevin L Kilzer

Igor Wojewoda

Stephen Bowling

Yong Yuenyongsgool

Naveen Raj

A memory management circuit includes a direct memory access (DMA) channel. The DMA channel includes logic configured to receive a buffer of data to be written using DMA. The DMA channel further includes logic to perform bit manipulation in real-time during a DMA write cycle of the first buffer of data.

Bit manipulation capable direct memory access

A system may have a digital period divider generating an output signal that is proportional to an angle defined by a rotational input signal and an interval measurement unit determining an interval time of an interval defined by succeeding pulses of the input output signal. In an enhancement, the system may also have a missing pulse detector which is operable to compare a current interval with a parameter to determine whether a pulse is missing in the input signal.

Digital period divider

A digital period divider has a first counter with R least significant bits (LSB) and P most significant bits (MSB) having a count input and a reset input, wherein the count input receives a first clock signal and the reset input receives a second clock signal; a latch having P bits and being coupled with the P bits of the first counter; a second counter having P bits and a count input and a reset input, wherein the count input receives the first clock signal; and a first comparator operable to compare the P bits of the latch with the P bits of the second counter and generating an output signal, wherein the output signal is also fed to the reset input of the second counter.

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Chandler, AZ, United States of America

Cobus Van Eeden