參數(shù)資料
型號： UPD77112GC
廠商： NEC Corp.
元件分類： 數(shù)字信號處理
英文描述： 16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSORS
中文描述： 16位定點(diǎn)數(shù)字信號處理器
文件頁數(shù)： 33/80頁
文件大?。?/td> 451K
代理商： UPD77112GC
Data Sheet U12801EJ4V0DS00
33
μ
PD77110, 77111, 77112
9. INSTRUCTIONS
9.1 Outline of Instructions
An instruction consists of 32 bits. Almost all the instructions, except some such as branch instructions, are
executed with one system clock. The maximum instruction cycle of the
μ
PD77110 is 15.3 ns. The maximum
instruction cycle of the
μ
PD77111 and 77112 is 13.3 ns. The following nine types of instructions are available:
(1) Trinomial operation instructions
These instructions specify an operation by the MAC. As the operands, three general-purpose registers can be
specified.
(2) Binomial operation instructions
These instructions specify an operation by the MAC, ALU, or BSFT. As the operands, two general-purpose
registers can be specified. An immediate value can be specified for some of these instructions, instead of a
general-purpose register, for one input.
(3) Uninominal operation instructions
These instructions specify an operation by the ALU. As the operands, one general-purpose register can be
specified.
(4) Load/store instructions
These instructions transfer 16-bit values between memory and a general-purpose register. Any general-purpose
register can be specified as the transfer source or destination.
(5) Register-to-register transfer instructions
These instructions transfer data from one general-purpose register to another.
(6) Immediate value setting instructions
These instructions write an immediate value to a general-purpose register and the registers of the address
operation unit.
(7) Branch instructions
These instruction specify branching of program execution.
(8) Hardware loop instructions
These instruction specify repetitive execution of an instruction.
(9) Control instructions
These instructions are used to control the program.
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