收藏本站
Memory Configuration
3.2.1 Internal X Data Memory
The default on-chip X data RAM is a 24-bit-wide, internal, static memory occupying the lowest
48 K locations ($0 – $BFFF) in X memory space. The on-chip X data RAM is organized into 48
banks with 1024 locations each. Available X data memory space is reduced and reallocated to
program memory using the memory switch mode described in the next section.
3.2.2 Memory Switch Modes—X Data Memory
Memory switch mode reallocates of portions of X and Y data RAM as program RAM. Bit 7 in
the OMR is the MS bit that controls this function, as follows:
When the MS bit is cleared, the X data memory consists of the default 48K × 24-bit
memory space described in the previous section. In this default mode, the lowest external
X data memory location is $6000.
When the MS bit is set, a portion of the higher locations of the internal X memory is
switched to internal program memory. The memory switch (MSW[1:0]) configuration bits
in the OMR select one of the following options:
— MSW[1:0] = 00 —The 32K higher locations ($4000 – $BFFF) of the internal
X memory are switched to internal program memory, and therefore the highest internal
X memory location is $3FFF. The X memory space at the switched locations ($4000 –
$BFFF) becomes reserved and should not be accessed. The lowest external X memory
location is $C000.
— MSW[1:0] = 01 —The 24K higher locations ($6000 – $BFFF) of the internal
X memory are switched to internal program memory, and therefore the highest internal
X memory location is $5FFF. The X memory space at the switched locations ($6000 –
$BFFF) becomes reserved and should not be accessed. The lowest external X memory
location is $C000.
— MSW[1:0] = 10 —The 16K higher locations ($8000 – $BFFF) of the internal
X memory are switched to internal program memory, and therefore the highest internal
X memory location is $7FFF. The X memory space at the switched locations ($8000 –
$BFFF) becomes reserved and should not be accessed. The lowest external X memory
location is $C000.
— MSW[1:0] = 11 —The 8K higher locations ($A000 – $BFFF) of the internal
X memory are switched to internal program memory, and therefore the highest internal
X memory location is $9FFF. The X memory space at the switched locations ($A000 –
$BFFF) becomes reserved and should not be accessed. The lowest external X memory
location is $C000.
DSP56311 User’s Manual, Rev. 2
3-4
Freescale Semiconductor
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DSPAUDIOEVMMB1E BOARD MOTHER DSP563XX
DSPIC30F2010 DEVELOPMENT KIT KIT DEV EMBEDDED C
DSTRM-KT-0181A DSTREAM DEBUG AND TRACE UNIT
DSUT1CSU SURGE SUPPR NETWORK W/GROUND
DTEL2 SURGE SUPPRESSOR PHONE RJ11/RJ45
DV003001 PROGRAMMER PICSTART PLUS 16C/17C
DV164035 MPLAB ICD3 IN-CIRC DEBUGGER
DV164039 KIT DEV PIC24FJ256DA210
相关代理商/技术参数
DSP56311EVMIG_D 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311EVMIG DSP56311EVM Sample Code
DSP56311EVMUM 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Evaluation Module Hardware Reference Manual
DSP56311FACT 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Higher performance programmable DSP for demanding voice and data applications
DSP56311UM 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 24-Bit Digital Signal Processor Users Manual
DSP56311UMAD 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Users Manual Addendum
DSP56311VF150 功能描述:数字信号处理器和控制器 - DSP, DSC 150Mhz/300MMACS 150Mhz EFCOP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
DSP56311VF150B1 功能描述:数字信号处理器和控制器 - DSP, DSC 24 BIT DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
DSP56311VF150R2 功能描述:数字信号处理器和控制器 - DSP, DSC 24 BIT DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT