Texas Instruments C2000 Workshop Guide And Lab Manual

Control Law Accelerator (CLA)
10 - 14 C2000 Microcontroller Workshop - Control Law Accelerator
CLA Assembly Parallel Instructions
 Parallel bars indicate a parallel instruction
 Parallel instructions operate as a single instruction with
a single opcode and performs two operations
 Example: Add + Parallel Store
MADDF32 MR3, MR3, MR1
|| MMOV32 @_Var, MR3
Instruction Example Cycles
Multiply
& Parallel Add/Subtract
MMPYF32 MRa,MRb,MRc
|| MSUBF32 MRd,MRe,MRf
1
Multiply, Add, Subtract
& Parallel Store
MADDF32 MRa,MRb,MRc
|| MMOV32 mem32,MRe
1
Multiply, Add, Subtract, MAC
& Parallel Load
MADDF32 MRa,MRb,MRc
|| MMOV32 MRe, mem32
1
Both operations complete in a single cycle
CLA Assembly Addressing Modes
 Two addressing modes: Direct and Indirect
 Both modes can access the low 64Kw of memory only:
 All of the CLA data space
 Both message RAMs
 Shared peripheral registers
 Direct –
Populates opcode field with 16-bit address of the variable
example 1: MMOV32 MR1, @_VarA
example 2: MMOV32 MR1, @_EPwm1Regs.CMPA.all
 Indirect – Uses the address in MAR0 or MAR1 to access memory;
after the read or write MAR0/MAR1 is incremented by a
16 bit signed value
example 1: MMOV32 MR0, *MAR0[2]++
example 2: MMOV32 MR1, *MAR1[-2]++

Texas Instruments C2000 Specifications

General

Brand	Texas Instruments
Model	C2000
Category	Microcontrollers
Language	English