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This module has details of assembly programming on the TI C6000 family of processors.


This module contains details on how to program the TI C6000 family of processors in assembly. The C6000 family of processors has many variants. Therefore, it would not be possible to describe how to program all the processors here. However, the basic architecture and instructions are similar from one processor to another. They differ by the number of registers, the size of the registers, peripherals on the device, etc. This module will assume a device that has 32 general-purpose 32-bit registers and eight functional units, like the C6713 processor.


  • SPRU198: TMS320C6000 Programmer's Guide
  • SPRU186: TMS320C6000 Assembly Language Tools User's Guide 
  • SPRU733: TMS320C67x/C67x+ DSP CPU and Instruction Set Reference Guide

Overview of c6000 architecture

The C6000 consists of internal memory, peripherals (serial port, external memory interface, etc), and most importantly, the CPU that has the registers and the functional units for execution of instructions. Although you don't need to care about the internal architecture of the CPU for compiling and running programs, it is necessary to understand how the CPU fetches and executes the assembly instructions to write a highly optimized assembly program.

Core dsp operation

In many DSP algorithms, the Sum of Products or Multiply-Accumulate (MAC) operations are very common. A DSP CPU is designed to handle the math-intensive calculations necessary for common DSP algorithms. For efficient implementation of the MAC operation, the C6000 CPU has two multipliers and each of them can perform a 16-bit multiplication in each clock cycle. For example, if we want to compute the dot product of two length-40 vectors a[n] and x[n], we need to compute:

y = n = 1 N a [ n ] x [ n ] size 12{y= Sum cSub { size 8{n=1} } cSup { size 8{N} } {a \[ n \] x \[ n \]} } {}

(For example, the FIR filtering algorithm is exactly the same as this dot product operation.) When an a[n] and x[n]are stored in memory, starting from n=1, we need to compute a[n]x[n]and add it to y (y is initially 0) and repeat this up to n=40. In the C6000 assembly, this MAC operation can be written as:

MPY .M a,x,prod ADD .L y,prod,y

Ignore .M and .L for now. Here, a , x , prod and y are numbers stored in memory and the instruction MPY multiplies two numbers a and x together and stores the result in prod . The ADD instruction adds two numbers y and prod together storing the result back to y .


Below is the structure of a line of assembly code.

Label: Parallel bars (||) [Condition] Instruction Unit Operands ;Comments

Labels identify a line of code or a variable and represent a memory address that contains either an instruction or data. The first character of a label must be must be in the first column and must be a letter or an underscore (_) followed by a letter. Labels can include up to 32 alphanumeric characters.

An instruction that executes in parallel with the previous instruction signifies this with parallel bars (||). This field is left blank for an instruction that does not execute in parallel with the previous instruction.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
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what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:  OpenStax, Dsp lab with ti c6x dsp and c6713 dsk. OpenStax CNX. Feb 18, 2013 Download for free at http://cnx.org/content/col11264/1.6
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