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參數(shù)資料
| 型號(hào)： | TMS320DM365ZCE27 |
| 廠商： | Texas Instruments |
| 文件頁(yè)數(shù)： | 2/210頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DIGITAL MEDIA SOC 338NFBGA |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 系列： | TMS320DM3x, DaVinci™ |
| 類型： | 數(shù)字媒體片內(nèi)系統(tǒng)（DMSoC） |
| 接口： | EBI/EMI，以太網(wǎng)，I²C，McBSP，SPI，UART，USB |
| 時(shí)鐘速率： | 270MHz |
| 非易失內(nèi)存： | ROM（16 kB） |
| 芯片上RAM： | 56kB |
| 電壓 - 輸入/輸出： | 1.8V，3.3V |
| 電壓 - 核心： | 1.20V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 338-LFBGA |
| 供應(yīng)商設(shè)備封裝： | 338-NFBGA（13x13） |
| 包裝： | 托盤 |
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SPRS457E
– MARCH 2009 – REVISED JUNE 2011
2.3.3
CP15
The ARM926EJ-S system control coprocessor (CP15) is used to configure and control instruction and
data caches, Tightly-Coupled Memories (TCMs), Memory Management Unit (MMU), and other ARM
subsystem functions. The CP15 registers are programmed using the MRC and MCR ARM instructions,
when the ARM in a privileged mode such as supervisor or system mode.
2.3.4
MMU
The ARM926EJ-S MMU provides virtual memory features required by operating systems such as Linux,
WindowCE, ultron, ThreadX, etc. A single set of two level page tables stored in main memory is used to
control the address translation, permission checks and memory region attributes for both data and
instruction accesses. The MMU uses a single unified Translation Lookaside Buffer (TLB) to cache the
information held in the page tables. The MMU features are:
Standard ARM architecture v4 and v5 MMU mapping sizes, domains and access protection scheme.
Mapping sizes are:
– 1MB (sections)
– 64KB (large pages)
– 4KB (small pages)
– 1KB (tiny pages)
Access permissions for large pages and small pages can be specified separately for each quarter of
the page (subpage permissions)
Hardware page table walks
Invalidate entire TLB, using CP15 register 8
Invalidate TLB entry, selected by MVA, using CP15 register 8
Lockdown of TLB entries, using CP15 register 10
2.3.5
Caches and Write Buffer
The size of the Instruction Cache is 16KB, Data cache is 8KB. Additionally, the Caches have the following
features:
Virtual index, virtual tag, and addressed using the Modified Virtual Address (MVA)
Four-way set associative, with a cache line length of eight words per line (32-bytes per line) and with
two dirty bits in the Dcache
Dcache supports write-through and write-back (or copy back) cache operation, selected by memory
region using the C and B bits in the MMU translation tables.
Critical-word first cache refilling
Cache lockdown registers enable control over which cache ways are used for allocation on a line fill,
providing a mechanism for both lockdown, and controlling cache corruption
Dcache stores the Physical Address TAG (PA TAG) corresponding to each Dcache entry in the TAG
RAM for use during the cache line write-backs, in addition to the Virtual Address TAG stored in the
TAG RAM. This means that the MMU is not involved in Dcache write-back operations, removing the
possibility of TLB misses related to the write-back address.
Cache maintenance operations provide efficient invalidation of, the entire Dcache or Icache, regions of
the Dcache or Icache, and regions of virtual memory.
The write buffer is used for all writes to a noncachable bufferable region, write-through region and write
misses to a write-back region. A separate buffer is incorporated in the Dcache for holding write-back for
cache line evictions or cleaning of dirty cache lines. The main write buffer has 16-word data buffer and a
four-address buffer. The Dcache write-back has eight data word entries and a single address entry.
2.3.6
Tightly Coupled Memory (TCM)
ARM internal RAM is provided for storing real-time and performance-critical code/data and the Interrupt
10
Device Overview
Copyright
2009–2011, Texas Instruments Incorporated
Product Folder Link(s): TMS320DM365
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMS320DM365ZCE30 | 功能描述:處理器 - 專門應(yīng)用 Dig Media System- on-Chip RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
| TMS320DM365ZCED30 | 功能描述:處理器 - 專門應(yīng)用 Digital Media SOC RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
| TMS320DM365ZCEF | 功能描述:處理器 - 專門應(yīng)用 Dig Media System- on-Chip RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
| TMS320DM367ZCED | 制造商:Texas Instruments 功能描述:TMS320DM367ZCEF |
| TMS320DM367ZCED30 | 制造商:Texas Instruments 功能描述:TMS320DM367ZCEF |
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