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SATA: ? ?
The ? SATA ? status ? LED ? (D11) ? is ? a ? Blue ? LED ? gated ? by ? the ? SATA_1V3 ? (VLDO5) ? power ? rail. ??
This ? power ? rail ? can ? be ? turned ? off ? by ? software ? for ? power ? savings ? measures. ? This ? LED ?
provides ? an ? easy ? visual ? recognition ? as ? to ? the ? status ? of ? this ? bus. ?
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VGA: ?
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The ? VGA ? status ? LED ? (D12) ? is ? a ? Blue ? LED ? gated ? by ? the ? TVDAC_2V75 ? (VLDO7) ? power ? rail. ??
This ? power ? rail ? can ? be ? turned ? off ? by ? software ? for ? power ? savings ? measures. ? This ? LED ?
provides ? an ? easy ? visual ? recognition ? as ? to ? the ? status ? of ? this ? bus. ?
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LCD: ?
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The ? LCD ? status ? LED ? (D13) ? is ? a ? Blue ? LED ? gated ? by ? the ? LCD_3V2 ? power ? rail. ??
Normally ? the ? LCD_3V2 ? power ? rail ? receives ? power ? directly ? from ? the ? DCDC_3V2 ? power ?
rail, ? but ? the ? LCD ? can ? also ? be ? configured ? to ? receive ? power ? from ? VIOHI_2V772 ? (VLDO4). ? In ?
the ? alternate ? voltage ? supply ? configuration, ? this ? LED ? will ? provide ? visual ? recognition ? as ? to ?
the ? status ? of ? the ? LCD ? bus. ?
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3.19. Optional Li ‐ ION Battery Connector (J14)
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On ? the ? Quick ? Start ? board, ? there ? is ? a ? footprint ? (J14) ? available ? to ? solder ? a ? three ? pin ? wafer ? connector ?
(Molex ? 0530470310 ? or ? equivalent). ? This ? connector ? will ? mate ? to ? Li ‐ ION ? batteries ? commercially ? available ?
as ? replacement ? batteries ? to ? commonly ? available ? MP3 ? players. ? The ? developer ? should ? make ? sure ? that ? the ?
polarity ? of ? the ? battery ? matches ? the ? polarity ? of ? the ? connector ? as ? replacement ? batteries ? may ? vary ? from ?
different ? manufacturers. ? When ? installed, ? a ? battery ? can ? be ? charged ? from ? the ? external ? 5V ? wall ? power ?
source. ? A ? battery ? will ? not ? be ? charged ? when ? only ? a ? USB ? cable ? is ? connected ? to ? the ? Quick ? Start ? board. ?
When ? powering ? a ? board ? from ? only ? a ? battery, ? the ? 5V ? power ? rail ? and ? the ? DCDC_3V2 ? power ? rail ? will ? not ? be ?
powered. ? Therefore, ? the ? Ethernet ? subsystem ? and ? Audio ? subsystem ? will ? not ? be ? operational ? under ? normal ?
board ? configurations. ? Depending ? on ? the ? battery ? capacity, ? it ? may ? be ? necessary ? to ? power ? down ? additional ?
subsystem ? voltage ? rails ? to ? extend ? battery ? life ? to ? a ? usable ? amount. ?
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The ? battery ? charging ? feature ? is ? an ? autonomous ? operation ? of ? the ? Dialog ? DA9053 ? PMIC ? that ? does ? not ?
require ? software ? support. ? Battery ? charging ? may ? be ? prevented ? by ? software ? by ? making ? registry ? changes ? to ?
the ? PMIC. ? The ? developer ? may ? need ? to ? verify ? in ? software ? that ? PMIC ? registry ? settings ? are ? proper ? for ?
battery ? charging ? operations. ? The ? footprints ? for ? testing ? with ? a ? battery ? were ? included ? for ? skilled ?
developers ? looking ? to ? experiment. ?
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3.20. Optional Back ‐ Up Coin Cell posts (JP1, JP2)
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On ? the ? Quick ? Start ? board, ? there ? are ? two ? through ‐ holes ? (JP1 ? and ? JP2) ? next ? to ? the ? power ? connector. ? These ?
through ‐ holes ? are ? positioned ? to ? hold ? a ? Lithium ? coin ? cell ? battery ? (Sanyo ? ML1220 ‐ VM1 ? or ? equivalent). ? For ?
proper ? operation, ? the ? coin ? cell ? posts ? should ? be ? soldered ? direction ? to ? the ? Quick ? Start ? board, ? with ? the ?
positive ? terminal ? connected ? to ? JP1 ? and ? the ? negative ? terminal ? connected ? to ? JP2. ? The ? DA9053 ? PMIC ? will ?
charge ? the ? coin ? cell ? when ? 5V ? Wall ? Power ? is ? available. ? When ? 5V ? Wall ? Power ? is ? removed, ? the ? coin ? cell ? will ?
provide ? power ? only ? to ? the ? RTC ? power ? rail ? (VLDO1) ? supplying ? power ? to ? the ? i.MX53 ? processor. ? The ? length ?
of ? time ? a ? coin ? cell ? can ? power ? the ? RTC ? subsystem ? may ? vary. ?
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Freescale Semiconductor
Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
14
PUBI – Public Use Business Information ?
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