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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FT311D-32L1C-R датащи(PDF) 20 Page - Future Technology Devices International Ltd. |
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FT311D-32L1C-R датащи(HTML) 20 Page - Future Technology Devices International Ltd. |
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20 / 40 page  Copyright © 2013 Future Technology Devices International Limited 20 DS_FT311D USB ANDROID HOST IC Datasheet Version 1.2 Document No.: FT_000660 Clearance No.: FTDI# 305 6 USB Error Detection Pin 32 (IOBUS7) of the device is provided to indicate a problem has occurred with the USB connection. Typical errors include USB Device Not Supported, which would occur if the USB port was connected to a non-Android class device port e.g. the FT311D is not designed to host memory sticks or printers etc. USB Device Not Responding and Hub not supported would be reported also if connected to a hub. The signal states are as follows: Pin state Definition Logic 0 Device connected to USB and functional Logic 1 Device not connected One 50ms logic 0 pulse Device not responding. This pulse occurs at plug-in and then the signal returns to logic 1. This then repeats at a 1 second interval. Two 50ms logic 0 pulses Device not supported. These pulses occur at plug- in and then the signal returns to logic 1. This then repeats at a 1 second interval. Three 50ms logic 0 pulses Hub not supported. These pulses occur at plug-in and then the signal returns to logic 1. This then repeats at a 1 second interval. Table 6.1 Error Detection |
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