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How does the HT82A851R MCU know if the Host has transmitted a 0-sized data packet?

April 26, 2017Data host ht82a851r mcu packet

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How does the HT82A851R MCU know if the Host has transmitted a 0-sized data packet?

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Answer If the Host sends a 0-sized data packet to the HT82A851R MCU, then the SIE will set the MISC register bit 7 high. When the MCU examines the MISC register and sees that bit 7 is high, then it knows that the host has sent a 0-sized data packet.