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| 型号： | MCIMX53-START-R |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 47/144页 |
| 文件大小： | 0K |
| 描述： | KIT DEVELOPMENT I.MX53 |
| 标准包装： | 1 |
| 系列： | i.MX53 |
| 类型： | MCU |
| 适用于相关产品： | i.MX53 |
| 所含物品： | 板 |
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Hardware Reference Manual for i.MX53 Quick Start
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5.4.
i.MX53 Applications Processor
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The ? i.MX53 ? Applications ? Processor ? is ? physically ? located ? in ? the ? central ? portion ? of ? the ? Quick ? Start ? board. ?
The ? most ? critical ? components ? for ? placement ? after ? the ? processor ? are ? the ? DDR3 ? SDRAM ? ICs. ? The ?
remainder ? of ? the ? components ? and ? connectors ? are ? arranged ? around ? the ? periphery ? of ? the ? board ? in ?
locations ? that ? minimize ? trace ? routing. ? The ? i.MX53 ? Processor ? is ? a ? highly ? integrated ? system ‐ on ‐ chips ? with ?
many ? modules ? controlled ? by ? the ? main ? Arm ? Cortex ‐ A8 ? core. ? Most ? modules ? have ? Logic ? Voltage ? inputs ?
which ? allow ? the ? designer ? to ? modify ? logic ? levels ? to ? suit ? the ? needs ? of ? connected ? ICs. ? A ? more ? detailed ?
explanation ? of ? these ? Logic ? Voltage ? Inputs ? is ? presented ? in ? the ? Peripheral ? Module ? Logic ? Voltage ? Levels ?
subsection. ? The ? information ? for ? voltage ? levels ? and ? other ? chip ? specific ? details ? come ? from ? the ? I.MX53 ? Data ?
Sheet, ? which ? may ? be ? revised ? from ? time ? to ? time. ? In ? the ? event ? that ? the ? most ? recent ? data ? sheet ? and ? the ?
User ? Guide ? do ? not ? agree, ? the ? Data ? Sheet ? should ? always ? take ? precedence. ? Every ? effort ? will ? be ? made ? to ?
keep ? the ? User ? Guide ? current ? to ? the ? most ? recent ? Data ? Sheet. ?
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The ? i.MX53 ? Processor ? initializes ? out ? of ? reset ? according ? to ? its ? preprogrammed ? ROM ? code. ? After ? initial ?
wakeup, ? it ? then ? attempts ? to ? read ? the ? logic ? levels ? on ? 26 ? different ? pins. ? Depending ? which ? pins ? are ?
high/low, ? the ? Processor ? will ? then ? select ? one ? of ? the ? allowed ? boot ? options ? to ? begin ? the ? boot ? process. ? This ?
is ? further ? explained ? in ? the ? subsection ? on ? Boot ? Mode ? Operations ? and ? Selections . ?
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The ? clock ? signals ? required ? by ? the ? i.MX53 ? Processor ? and ? the ? rest ? of ? the ? Quick ? Start ? board ? are ? further ?
explained ? in ? the ? section ? on ? Clock ? Signals . ? The ? i.MX53 ? Processor ? has ? the ? ability ? to ? supply ? a ? limited ?
amount ? of ? filtered ? power ? for ? internal ? purposes ? using ? an ? internal ? voltage ? regulator. ? The ? operation ? of ? this ?
regulator ? is ? explained ? further ? in ? the ? i.MX53 ? Internal ? Regulator ? subsection. ? The ? Processor ? also ? has ? an ?
internal ? Watch ? Dog ? Timer ? (WDOG) ? circuit ? that ? can ? be ? used ? to ? reset ? the ? Processor ? in ? the ? event ? it ? stops ?
functioning ? correctly. ? The ? supporting ? circuitry ? is ? explained ? in ? further ? detail ? in ? the ? subsection ? titled ?
Watch ? Dog ? Time . ?
5.4.1. Peripheral Module Logic Voltage Levels
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By ? convention, ? pins ? used ? on ? the ? I.MX53 ? Processor ? to ? set ? module ? logic ? voltage ? levels ? begin ? with ? NVCC_. ?
This ? is ? to ? aid ? the ? developer ? in ? the ? design ? of ? a ? project ? based ? on ? the ? i.MX53 ? Processor. ? There ? are ? 25 ? such ?
pins ? used, ? and ? practically ? speaking, ? they ? supply ? the ? internal ? pull ‐ up ? voltages ? for ? pins ? designated ? for ? data ?
output. ? These ? 25 ? pins ? are ? shown ? in ? detail ? in ? Table ? 4. ? Module ? Voltage ? Supplies . ? Once ? a ? voltage ? level ? is ?
selected ? for ? a ? particular ? module, ? all ? pins ? within ? that ? module ? will ? use ? the ? same ? voltage ? level. ? It ? is ?
important ? for ? the ? developer ? not ? to ? try ? to ? use ? an ? external ? pull ‐ up ? to ? a ? different ? voltage ? level ? for ?
individual ? pins. ? Level ? shifters ? must ? be ? used ? if ? certain ? pins ? need ? to ? have ? different ? voltage ? levels ? to ?
interface ? with ? external ? ICs. ? If ? a ? different ? voltage ? level ? is ? used ? on ? an ? external ? pull ‐ up, ? one ? or ? both ? of ? the ?
affected ? power ? rails ? will ? most ? likely ? have ? a ? different ? voltage ? level ? than ? intended ? throughout ? the ? design. ?
On ? a ? newly ? designed ? board ? that ? shows ? unexpected ? voltage ? levels, ? this ? may ? be ? the ? first ? thing ? to ? check. ?
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On ? the ? Quick ? Start ? board, ? there ? are ? a ? number ? of ? unpopulated ? pull ‐ up ? resistors. ? This ? is ? a ? result ? of ? the ?
initial ? design ? being ? conservative, ? and ? the ? addition ? of ? external ? pull ‐ up ? resistors ? to ? supplement ? internal ?
i.MX53 ? pull ‐ up ? supply ? voltage. ? Subsequent ? Quick ? Start ? board ? usage ? has ? shown ? these ? pull ‐ ups ? to ? be ?
unnecessary, ? so ? they ? are ? unpopulated. ?
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Freescale Semiconductor
Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
39
PUBI – Public Use Business Information ?
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCIMX53-START-R | 制造商:Freescale Semiconductor 功能描述:DEV KIT I.MX53 1GHZ ARM CORTEX A8 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD; Silicon Manufacturer:Freescale; Core Architecture:ARM; Core Sub-Architecture:Cortex-A8; Silicon Core Number:i.MX53; Silicon Family Name:i.MX53; Kit Contents:Processor, PMIC, microSD, Power ;RoHS Compliant: No |
| MCIMX53XA | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xA Automotive and Infotainment Applications Processors |
| MCIMX53XD | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xD Applications Processors for Consumer Products |
| MCIMX6 SOLO | 制造商:RIOTBOARD 功能描述:I.MX6 GC2000 CORTEX A9 DEV BOARD 制造商:RIOTBOARD 功能描述:RIOT BOARD DEVELOPMENT PLATFORM |
| MCIMX6 SOLO | 制造商:RIOTBOARD 功能描述:Freescale i.MX6Solo community board |
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