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ABB DSPC172 主CPU模块
ABB DSPC172 主CPU模块
中央处理器（CPU，Central Processing Unit）是一块超大规模的集成电路，是一台计算机的运算核心（Core）和控制核心
（ Control Unit）。它的功能主要是解释计算机指令以及处理计算机软件中的数据。CPU从逻辑上可以划分成3个模块，分别
是控制单元、运算单元和存储单元，这三部分由CPU内部总线连接起来。控制单元是整个CPU的指挥控制中心，由指令寄存
器IR(Instruction Register)、指令译码器ID(Instruction Decoder)和操作控制器OC(Operation Controller)等，对协调整个电
脑有序工作极为重要。它根据用户预先编好的程序，依次从存储器中取出各条指令，放在指令寄存器IR中，通过指令译码(分析)
确定应该进行什么操作，然后通过操作控制器OC，按确定的时序，向相应的部件发出微操作控制信号。操作控制器OC中主要
包括节拍脉冲发生器、控制矩阵、时钟脉冲发生器、复位电路和启停电路等控制逻辑。
Central Processing Unit (CPU) is a very large-scale integrated circuit, and it is the computing Core and Control Unit of a
computer. Its function is mainly to interpret computer instructions and process data in computer software. Logically, the CPU
can be divided into three modules, namely, the control unit, the arithmetic unit and the storage unit, which are connected
by the internal bus of the CPU. The control unit is the command and control center of the whole CPU. It consists of instruction
register IR(Instruction Register), instruction decoder ID(Instruction Decoder) and operation controller OC(Operation Controller),
etc., which is very important to coordinate the orderly work of the whole computer. According to the user’s pre-programmed
program, it takes out each instruction from the memory in turn, puts it in the instruction register IR, determines what operation
should be performed through instruction decoding (analysis), and then sends micro-operation control signals to the corresponding
components through the operation controller OC according to the determined time sequence. Operation controller OC mainly
includes control logic such as beat pulse generator, control matrix, clock pulse generator, reset circuit and start-stop circuit.
