DSP56311 Overview
Direct memory access (DMA)
— Six DMA channels supporting internal and external accesses
— One-, two-, and three- dimensional transfers (including circular buffering)
— End-of-block-transfer interrupts
— Triggering from interrupt lines and all peripherals
Phase lock loop (PLL)
— Allows change of low power Divide Factor (DF) without loss of lock
— Output clock with skew elimination
Hardware debugging support
— On-chip emulation (OnCE) module
— Joint Test Action Group (JTAG) Test Access Port (TAP)
— Address Trace mode reflects internal program RAM accesses at the external port
Reduced power dissipation
— Very low-power CMOS design
— Wait and stop low-power standby modes
— Fully-static design specified to operate down to 0 Hz (dc)
— Optimized power-management circuitry (instruction-dependent, peripheral-dependent,
and mode-dependent)
1.6 DSP56300 Core Functional Blocks
The functional blocks of the DSP56300 core are:
Data arithmetic logic unit (ALU)
Address generation unit
Program control unit
PLL and clock oscillator
JTAG TAP and OnCE module
Memory
In addition, the DSP56311 provides a set of internal peripherals, discussed in
1.6.1 Data ALU
The data ALU performs all the arithmetic and logical operations on data operands in the
DSP56300 core. These are the components of the data ALU:
Fully pipelined 24 × 24-bit parallel multiplier-accumulator
Bit field unit, comprising a 56-bit parallel barrel shifter (fast shift and normalization; bit
stream generation and parsing)
DSP56311 User’s Manual, Rev. 2
1-6
Freescale Semiconductor
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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