28-series DSP (Digital Signal Processor) downloading and resetting interlocking circuit

The utility model belongs to the aviation motor controller design technology, and relates to a 28-series DSP downloading and resetting interlock circuit. Comprising an electromagnetic relay, a capacitor and two current-limiting resistors, only one relay is used, two pairs of contacts of the relay are fully utilized, the design concept that one control signal carries out two kinds of branch control is achieved, and other phase inverters and high-level reverse buffers are achieved through a complex programmable logic circuit. And more devices and power supply branches are saved, so that the device is more economical, light and miniaturized. Meanwhile, under the condition that the DSP program is convenient to download, the situation that resetting and locking are not carried out when the DSP program is downloaded is achieved, and therefore the reliability, stability and convenience of DSP program downloading are guaranteed. Control of different conditions of product working and program downloading is achieved th