- 您现在的位置：买卖IC网 > PDF目录16966 > MA300014 (Microchip Technology)MODULE DSPIC30F SAMPLE 80QFP PDF资料下载
参数资料
| 型号： | MA300014 |
| 厂商： | Microchip Technology |
| 文件页数： | 14/92页 |
| 文件大小： | 0K |
| 描述： | MODULE DSPIC30F SAMPLE 80QFP |
| 标准包装： | 1 |
| 附件类型： | 插拔式模块（PIM）- dsPIC30F6014A |
| 适用于相关产品： | dsPICDEM 板（DM300014 或 DM300019） |
| 产品目录页面： | 658 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页
dsPIC30F
5.3
Data Address Space
5.3.2
DATA SPACE WIDTH
The core has two data spaces, X and Y. These data
spaces can be considered either separate (for some
DSP instructions), or as one unified linear address
range (for MCU instructions). The data spaces are
accessed using two Address Generation Units (AGUs)
The core data width is 16-bits. All internal registers are
organized as 16-bit wide words. Data space memory is
organized in byte addressable, 16-bit wide blocks.
for the dsPIC30F.
and separate data paths. This feature allows certain
instructions to concurrently fetch two words from RAM,
5.3.3
DATA ALIGNMENT
thereby enabling efficient execution of DSP algorithms
such as Finite Impulse Response (FIR) filtering and
Fast Fourier Transform (FFT).
To help maintain backward compatibility with
PICmicro ? devices and improve data space memory
usage efficiency, the dsPIC30F instruction set supports
both word and byte operations. Data is aligned in data
5.3.1
X AND Y DATA SPACES
memory and registers as words, but all data space EAs
The X data space is used by all instructions and
supports all addressing modes. There are separate
read and write data buses for X data space. The X read
data bus is the read data path for all instructions that
view data space as combined X and Y address space.
It is also the X data prefetch path for the dual operand
DSP instructions ( MAC class).
The Y data space is used in concert with the X data
space by the MAC class of instructions ( CLR, ED,
EDAC, MAC, MOVSAC, MPY, MPY.N and MSC ) to
provide two concurrent data read paths.
Both the X and Y data spaces support modulo
addressing for all instructions, subject to addressing
mode restrictions. Bit-reversed addressing is only
supported for writes to X data space.
All data memory writes, including in DSP instructions,
view data space as combined X and Y address space.
The boundary between the X and Y data spaces is
and is not user programmable.
All effective addresses are 16 bits wide and point to
bytes within the data space. Therefore, the data space
address range is 64 Kbytes or 32 Kwords, though the
implemented memory locations vary from one device to
another.
DS70043F-page 12
resolve to bytes. Data byte reads will read the complete
word which contains the byte, using the Least
Significant bit (LSb) of any EA to determine which byte
to select.
As a consequence of this byte accessibility, all effective
address calculations are internally scaled. For
example, the core would recognize that Post-Modified
Register Indirect Addressing mode, [Ws++], will result
in a value of Ws+1 for byte operations and Ws+2 for
word operations.
All word accesses must be aligned to an even address.
Misaligned word data fetches are not supported.
Should a misaligned read or write be attempted, a trap
will then be executed, allowing the system and/or user
to examine the machine state prior to execution of the
address fault.
? 2005 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| 1-1116733-5 | TELCO ASSY,25 PR,CAT5,LEFT,15' |
| MAX890LESA/V+ | IC SW MOSFET PUR PCH HSIDE 8SOIC |
| LBC3225T6R8MR | INDUCTOR WOUND 6.8UH 620MA 1210 |
| 2-1589476-3 | CONN RCPT 25POS 30AWG 36IN |
| MAX890LESA/V+T | IC SW MOSFET PUR PCH HSIDE 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MA300015 | 功能描述:子卡和OEM板 dsPIC30F 80L Plug In Sample (6010A). RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA300016 | 功能描述:子卡和OEM板 dsPICDEM 80-PIN PIM RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA300118 | 功能描述:子卡和OEM板 _ RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA300128 | 功能描述:子卡和OEM板 _ RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MA300140 | 功能描述:子卡和OEM板 _ RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
发布紧急采购，3分钟左右您将得到回复。