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5.14. SATA  
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The ? internal ? SATA ? PHY ? of ? the ? i.MX53 ? Applications ? Processor ? provides ? the ? two ? differential ? pair ? data ?
signals ? necessary ? for ? SATA ? operations. ? No ? external ? transceiver ? is ? required. ? Each ? of ? the ? four ? data ? lines ?
pass ? through ? a ? 0.01 ? uF ? capacitor ? for ? decoupling. ? These ? capacitors ? are ? placed ? as ? close ? to ? the ? SATA ?
connector ? as ? possible. ? The ? Processor ? SATA ? module ? receives ? 2.5V ? power ? from ? VBUCKPERI ? for ? the ? PHY ?
portion ? of ? the ? module ? and ? 1.3V ? power ? from ? VLDO5_1V3 ? for ? the ? controller ? portion ? of ? the ? module. ? A ? 191 ?
Ohm ? 1% ? resistor ? is ? required ? to ? be ? connected ? to ? the ? SATA_REXT ? pin ? (C13). ? This ? resistor ? received ? a ? small, ?
constant ? current ? at ? the ? initialization ? of ? the ? SATA ? module ? to ? allow ? for ? cable ? impedance ? calibration. ? After ?
module ? initialization, ? this ? resistor ? is ? not ? used. ?
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The ? i.MX53 ? Applications ? Processor ? provides ? two ? pins ? to ? receive ? an ? external ? differential ? pair ? clock ? input ?
for ? use ? by ? the ? SATA ? module. ? Testing ? of ? the ? i.MX53 ? Processor ? confirms ? that ? the ? internally ? generated ?
clock ? signal ? is ? working ? properly. ? Therefore ? the ? external ? clock ? components ? are ? not ? populated ? and ? the ?
eFuses ? for ? the ? Processor ? are ? configured ? for ? internal ? clock ? operation. ?
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The ? 7 ‐ pin ? SATA ? data ? connector ? is ? suitable ? for ? use ? will ? all ? SATA ? capable ? storage ? media ? devices ? including ?
Hard ? Drives ? and ? Optical ? Media ? storage ? devices ? (DVD/CD). ? It ? is ? possible ? to ? configure ? the ? Quick ? Start ?
Board ? to ? boot ? directly ? from ? a ? SATA ? device. ? To ? enable ? the ? Quick ? Start ? board ? to ? boot ? from ? SATA, ? the ?
developer ? will ? have ? the ? make ? the ? following ? modifications ? to ? the ? board: ?
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1) Solder ? a ? 10 ‐ DIP ? Switch ? onto ? the ? pads ? for ? SW1. ? A ? suitable ? switch ? is ? manufactured ? by ? Multicomp ?
(MCNHDS ‐ 10 ‐ T). ? Move ? Switches ? 6 ? and ? 8 ? to ? the ? ON ? (UP) ? position. ?? Alternately, ? two ? wires ? can ? be ?
soldered ? between ? pads ? 6 ? & ? 15 ? and ? 8 ? & ? 13 ? on ? the ? SW1 ? footprint ? (this ? effectively ? take ? the ? place ?
of ? moving ? the ? switch ? to ? the ? on ? position. ?
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2) Rotate ? R46 ? in ? the ? clockwise ? direction ? by ? 90 ? degrees ? pivoting ? around ? pad ? R46.2. ? Add ? a ? wire ? from ?
the ? unconnected ? end ? of ? the ? 4.7K ? Ohm ? resistor ? to ? as ? suitable ? ground ? point. ? The ? pad ? for ? R47.2 ? is ?
the ? closest ? ground ? point. ?
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Table ? 12 ? below ? shows ? the ? TTL ? logic ? levels ? on ? the ? external ? boot ? configuration ? (BOOT_CFG1) ? scheme ? to ?
modify ? the ? board ? from ? SD/MMC ? boot ? to ? use ? SATA ? boot. ?
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CFG1[7] ?
CFG1[6] ?
CFG1[5] ?
CFG1[4] ?
CFG1[3] ?
SD/MMC ? Boot ? (Default) ?
0 ?
1 ? ‐? ‐? ‐?
SATA ? Boot ?
0 ?
0 ?
1 ?
0 ?
1 ?
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Table ? 12. ? SATA ? Boot ? Mode ? Configuration ? Table. ?
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Freescale Semiconductor
Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
60
PUBI – Public Use Business Information ?
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