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Hardware Reference Manual for i.MX53 Quick Start
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4.8. micro ‐ B   USB   Device   Connector   (J3)  
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The ? Quick ? Start ? board ? has ? one ? micro ‐ B ? USB ? device ? connector ? that ? can ? be ? used ? to ? connect ? the ? Quick ?
Start ? board ? to ? a ? USB ? Host ? computer. ? The ? micro ‐ B ? connector ? is ? connected ? to ? the ? High ‐ speed ? (HS) ? USB ? 2.0 ?
OTG ? module ? of ? the ? i.MX53 ? processor ? and ? is ? cross ? connected ? with ? the ? lower ? USB ? Host ? port ? on ? J2. ? When ? a ?
5V ? supply ? is ? seen ? on ? the ? micro ‐ B ? connector ? (from ? the ? USB ? Host), ? the ? i.MX53 ? processor ? will ? configure ? the ?
OTG ? module ? for ? device ? mode, ? which ? will ? prevent ? the ? lower ? USB ? Host ? port ? from ? operating ? correctly. ? The ?
5V ? power ? provided ? by ? the ? attached ? USB ? Host ? is ? only ? used ? by ? the ? i.MX53 ? processor ? for ? sensing ? that ? the ?
host ? is ? present. ? The ? Quick ? Start ? board ? will ? not ? draw ? power ? from ? the ? connected ? USB ? Host ? and ? will ? not ?
operate ? without ? a ? 5V ? DC ? power ? source ? or ? charged ? Li ‐ ION ? battery. ? The ? micro ‐ B ? connector ? is ? keyed ? and ?
will ? not ? accept ? a ? micro ‐ A ? plug ? from ? a ? cable. ? A ? micro ‐ B ? to ? USB ‐ A ? cable ? is ? supplied ? as ? part ? of ? the ? Quick ?
Start ? kit ? and ? can ? be ? inserted ? into ? the ? micro ‐ B ? USB ? connector ? at ? the ? point ? shown ? in ? Figure ? 8 . ?
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micro ‐ B ? USB ????
Connector ? (J3) ?
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Freescale Semiconductor
Figure ? 8. ? micro ‐ B ? USB ? Device ? Connector ? (J3) ?
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Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
23
PUBI – Public Use Business Information ?
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