- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382906 > COLDFIRE2UM Version 2/2M ColdFire Core Processor User＇s Manual PDF資料下載
參數(shù)資料
| 型號(hào)： | COLDFIRE2UM |
| 英文描述： | Version 2/2M ColdFire Core Processor User＇s Manual |
| 中文描述： | 版本2/2M ColdFire內(nèi)核的處理器用戶手冊(cè) |
| 文件頁(yè)數(shù)： | 130/253頁(yè) |
| 文件大?。?/td> | 1762K |
| 代理商： | COLDFIRE2UM |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)當(dāng)前第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)第248頁(yè)第249頁(yè)第250頁(yè)第251頁(yè)第252頁(yè)第253頁(yè)
Integrated Memories
5-24
ColdFire2/2M User’s Manual
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
If RAM_SZ is set to zero, this bit is set to zero, and the RAM module is disabled. Any attempt
to set the valid bit is disabled when RAM_SZ is set to zero.
5.4.5 RAM Initialization
After a hardware reset, the contents of the RAM module are undefined. The valid bit of the
RAMBAR is cleared, disabling the module. If the RAM needs to be initialized with
instructions or data, the following steps should be performed:
1.
Load the RAMBAR mapping the RAM module to the desired location within the
address space.
2.
Read the source data and write it to the RAM. There are various instructions to
support this function, including memory-to-memory move instructions, or the
MOVEM opcode. The MOVEM instruction is optimized to generate line-sized burst
fetches on 0-modulo-16 addresses, so this opcode generally provides maximum
performance.
3.
After the data has been loaded into the RAM, it may be appropriate to load a revised
value into the RAMBAR with a new set of “attributes”. These attributes consist of the
write-protect and address space mask fields.
These initialization functions can be performed by the ColdFire processor, or from an
external emulator using the debug module.
5.4.6 Power Management
As noted previously, depending upon the configuration defined by the RAMBAR, instruction
fetch accesses may be sent to the RAM module and the I-Cache simultaneously. If the
access is mapped to the RAM module, it sources the read data and the I-Cache access is
discarded. If the RAM is used only for data operands, power dissipation can be lowered by
asserting the ASn bits associated with instruction fetches. Additionally, if the RAM contains
only instructions, power dissipation can be reduced by masking operand accesses.
Consider the following examples of typical RAMBAR settings:
Data contained in RAM
RAMBAR[7:0]
Only code
Only data
Both code and data
$2B
$35
$21
5.5 INTERACTIONS BETWEEN KBUS MEMORIES
Depending on configuration information, instruction fetches and operand accesses may be
sent to all of the K-Bus memories (i.e. RAM, ROM, and ICACHE) simultaneously. There
needs to be consistency between the ACRs and the default modes defined by CACR
(CACR[9], CACR[8], and CACR[5]).
F
Freescale Semiconductor, Inc.
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| COLDFIRE2UMAD | Version 2/2M ColdFire Core Processor User＇s Manual Addendum |
| COLDFIRE3UM | Version 3 ColdFire Core User＇s Manual |
| COM150A | 100V Single N-Channel Hi-Rel MOSFET in a TO-254AA package |
| COM2017P | UART |
| COM2502P | UART |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| COLDFIRE2UMAD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Version 2/2M ColdFire Core Processor User＇s Manual Addendum |
| COLDFIRE3UM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Version 3 ColdFire Core User＇s Manual |
| COLD-PACK | 制造商:NTE Electronics 功能描述: |
| COLDS/002 | 制造商:Farnell / Duratool 功能描述:JOBBER DRILL SET 1.0-13.0X0.5MM |
| COLINKEX | 制造商:Embest Info&Tech Co Ltd 功能描述:ADAPTER DEBUG SW/JTAG 制造商:EMBEST 功能描述:ADAPTER, DEBUG, SW/JTAG 制造商:EMBEST 功能描述:DEBUGGER, LPC13XX; Silicon Family Name:LPC13xx; Core Architecture:ARM; Core Sub-Architecture:Cortex-M3; IC Product Type:Debugger; Features:Support Cortex M0 and Cortex M3 Devices, Support Software & JTAG Debugging ;RoHS Compliant: Yes |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
