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TMS320F280049: How to configure SPI enable signal STE automatic operation

Part Number:TMS320F280049

We want that TI DSP to communicate with A3 MCU through SPI interface.However, it was found that the function of enabling pin STE to automatically set high and set low could not be realized through DSP configuration.The DEMO source provided by FAE is also implemented through IO port simulation.As shown in the figures below, SPI read/write enable signal STE is also realized through IO simulation.

?? ?:

now we use the SPIB,the DSP tms320f280049 is used for spi master.the wave as bellow

CH1: SPIB-STE

CH2:SPIB-CLK

CH3:SPIB-MOSI

,

?? ?:

the CH1 STE is rested L auto,but can not seted H when the clk is finished

,

Yale Li:

Hi,

I post this issue to the relevant engineer. I will reply you once I got response. Thanks for your patience.

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