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參數(shù)資料
| 型號： | TMS320C2812ZHHS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 16-BIT, 150 MHz, OTHER DSP, PBGA179 |
| 封裝： | LEAD FREE, BGA-179 |
| 文件頁數(shù)： | 86/156頁 |
| 文件大?。?/td> | 1826K |
| 代理商： | TMS320C2812ZHHS |
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Functional Overview
35
April 2001 Revised October 2005
SPRS174M
3.2.2
Memory Bus (Harvard Bus Architecture)
As with many DSP type devices, multiple busses are used to move data between the memories and
peripherals and the CPU. The C28x memory bus architecture contains a program read bus, data read bus
and data write bus. The program read bus consists of 22 address lines and 32 data lines. The data read and
write busses consist of 32 address lines and 32 data lines each. The 32-bit-wide data busses enable single
cycle 32-bit operations. The multiple bus architecture, commonly termed “Harvard Bus”, enables the C28x to
fetch an instruction, read a data value and write a data value in a single cycle. All peripherals and memories
attached to the memory bus will prioritize memory accesses. Generally, the priority of Memory Bus accesses
can be summarized as follows:
Highest:
Data Writes (Simultaneous data and program writes cannot occur on the memory bus.)
Program Writes (Simultaneous data and program writes cannot occur on the memory bus.)
Data Reads
Program Reads (Simultaneous program reads and fetches cannot occur on the memory
bus.)
Lowest:
Fetches (Simultaneous program reads and fetches cannot occur on the memory bus.)
3.2.3
Peripheral Bus
To enable migration of peripherals between various Texas Instruments (TI) DSP family of devices, the F281x
and C281x adopt a peripheral bus standard for peripheral interconnect. The peripheral bus bridge multiplexes
the various busses that make up the processor “Memory Bus” into a single bus consisting of 16 address lines
and 16 or 32 data lines and associated control signals. Two versions of the peripheral bus are supported on
the F281x and C281x. One version only supports 16-bit accesses (called peripheral frame 2) and this retains
compatibility with C240x-compatible peripherals. The other version supports both 16- and 32-bit accesses
(called peripheral frame 1).
3.2.4
Real-Time JTAG and Analysis
The F281x and C281x implement the standard IEEE 1149.1 JTAG interface. Additionally, the F281x and
C281x support real-time mode of operation whereby the contents of memory, peripheral, and register
locations can be modified while the processor is running and executing code and servicing interrupts. The user
can also single step through non-time critical code while enabling time-critical interrupts to be serviced without
interference. The F281x and C281x implement the real-time mode in hardware within the CPU. This is a
unique feature to the F281x and C281x, no software monitor is required. Additionally, special analysis
hardware is provided that allows the user to set hardware breakpoint or data/address watch-points and
generate various user selectable break events when a match occurs.
3.2.5
External Interface (XINTF) (2812 Only)
This asynchronous interface consists of 19 address lines, 16 data lines, and three chip-select lines. The
chip-select lines are mapped to five external zones, Zones 0, 1, 2, 6, and 7. Zones 0 and 1 share a single
chip-select; Zones 6 and 7 also share a single chip-select. Each of the five zones can be programmed with
a different number of wait states, strobe signal setup and hold timing and each zone can be programmed for
extending wait states externally or not. The programmable wait-state, chip-select and programmable strobe
timing enables glueless interface to external memories and peripherals.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TMS320C28341 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Delfino Microcontrollers |
| TMS320C28341ZEPQ | 制造商:Texas Instruments 功能描述:DELFINO MICROCONTROLLER - Trays |
| TMS320C28341ZFEQ | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
| TMS320C28341ZFET | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
| TMS320C28341ZHHT | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
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