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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT43USB353M датащи(PDF) 58 Page - ATMEL Corporation |
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AT43USB353M датащи(HTML) 58 Page - ATMEL Corporation |
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58 / 95 page  58 AT43USB353M 3307B–USB–4/04 Control Transfers at Control End-point EP0 The description given below is for the function control end-point, but applies to the hub control end-point as well if the proper registers are used. The following illustration describes the three possible types of control transfers – Control Write, Control Read and No-data control: The following state diagram shows how the various state transitions are triggered. Additional decision making may take place within the response states to determine the next expected state. Unmarked arcs represent transitions that trigger immediately following completion of the response state processing. Stable states, those requiring an interrupt to exit having no unmarked arcs as exit paths, are shown in bold. Setup Data Status Stage Stage Stage Control Write DATA0 DATA1 DATA0 DATA0/1 DATA1(0) Control Read DATA0 DATA1 DATA0 DATA0/1 DATA1(0) Setup Status Stage Stage No-data Control DATA0 DATA1(0) SETUP(0) SETUP(0) OUT(1) OUT(0) OUT(0/1) … IN(1) IN(1) SETUP(0) IN(1) IN(1) OUT(1) IN(0) IN(0/1) … Legend: DATAn Data packet with PID’s data toggle bit equal to n DATA1(0) Zero length DATA1 packet Idle Setup Response No-data Status Response Control Read Status Response Control Write Status Response RX_SETUP_INT RX_OUT_INT TX_COMPLETE_INT TX_COMPLETE_INT TX_COMPLETE_INT RX_OUT_INT Control Read Data Response TX_COMPLETE_INT Control Write Data Response RX_OUT_INT (ANY STABLE STATE) |
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