參數(shù)資料
型號(hào): MC68EC060RC50
廠商: Freescale Semiconductor
文件頁數(shù): 103/128頁
文件大?。?/td> 0K
描述: IC MPU 32BIT 50MHZ 206-PGA
標(biāo)準(zhǔn)包裝: 10
系列: M680x0
處理器類型: M680x0 32-位
速度: 50MHz
電壓: 3.3V
安裝類型: 通孔
封裝/外殼: 206-BEPGA
供應(yīng)商設(shè)備封裝: 206-PGA(47.25x47.25)
包裝: 托盤
Memory Management Unit
MOTOROLA
M68060 USER’S MANUAL
4-7
from an access. These bits can be programmed by the user to support external address-
ing, bus snooping, or other applications.
CM—Cache Mode
This field selects the cache mode and access precision as follows:
00 = Cachable, Writethrough
01 = Cachable, Copyback
10 = Cache-Inhibited, Precise Exception Model
11 = Cache-Inhibited, Imprecise Exception Model
Section 5 Caches provides detailed information on caching modes.
W—Write Protect
This bit indicates the write privilege of the TTR block.
0 = Read and write accesses permitted
1 = Write accesses not permitted
Bits 4,3,1,0—Reserved by Motorola.
4.2 LOGICAL ADDRESS TRANSLATION
The primary function of the MMUs is to translate logical addresses to physical addresses.
The MMUs perform translations according to control information in translation tables. The
operating system creates these translation tables and stores them in memory. The proces-
sor then searches through a translation table as needed and stores the resulting translation
in an ATC.
4.2.1 Translation Tables
Both instruction and data access use the same translation tree. Separate translations trees
are available for user and supervisor accesses.
Figure 4-6 illustrates the three-level tree structure of a general translation table supported
by the MC68060. The root- and pointer-level tables contain the base addresses of the tables
at the next level. The page-level tables contain either the physical address for the translation
or a pointer to the memory location containing the physical address. Only a portion of the
translation table for the entire logical address space is required to be resident in memory at
any time—specifically, only the portion of the table that translates the logical addresses of
the currently executing process. Portions of translation tables can be dynamically allocated
as the process requires additional memory.
The current privilege mode determines the use of the URP or SRP for translation of the
access. The root pointer contains the base address of the translation table’s root-level table.
The translation table consists of several linked tables of descriptors. The table descriptors
of the root- and pointer-levels can have resident or invalid descriptor types. The page
descriptors of the page-level table have resident, indirect, or invalid descriptor types. The
page descriptors of the page-level table can be resident, indirect, or invalid. A page descrip-
tor defines the physical address of a page frame in memory that corresponds to the logical
address of a page. An indirect descriptor, which contains a pointer to the actual page
相關(guān)PDF資料
PDF描述
IDT71V65803S133BGG8 IC SRAM 9MBIT 133MHZ 119BGA
MPC8270ZUUPEA IC MPU POWERQUICC II 480-TBGA
IDT71V65803S133BG8 IC SRAM 9MBIT 133MHZ 119BGA
MPC860PCZQ66D4 IC MPU PWRQUICC 66MHZ 357-PBGA
IDT71V65803S100BGG8 IC SRAM 9MBIT 100MHZ 119BGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68EC060RC66 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060RC75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU50 功能描述:IC MPU 68K 50MHZ 304-TBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M680x0 標(biāo)準(zhǔn)包裝:1 系列:MPC85xx 處理器類型:32-位 MPC85xx PowerQUICC III 特點(diǎn):- 速度:1.2GHz 電壓:1.1V 安裝類型:表面貼裝 封裝/外殼:783-BBGA,F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:783-FCPBGA(29x29) 包裝:托盤
MC68EC060ZU66 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324