dsp microprocessor

change is discrete, then discrete processing, and finally to a continuous.The ideal digital-to-analog/digital converter is a time-varying system.The ideal ADC sees no quantization error, which is equivalent to sampling only.The spectrum of the DAC equals the spectrum of the sample sequence multiplied by the shaping spectrum. The ideal digital-to-analog converter has a function similar to window function in the frequency domain, but it can not be regarded as a filter, because the filter is the L

).However, after the reset, it is possible to write a new value to the ISTB to reposition the ist. Assuming another location, the first ISFP (corresponding to the reset interrupt) will never be run, since the reset causes the ISTB to be set to 0.Hpeint The field is given the highest priority interrupt number in the current ier (relative to the location of the IFR relative bit), which is the highest priority interrupt number currently pending and enabled in Ier. The ISTP can be used to manually j

pole of the N-square, n is large when it tends to 0, the system is stable. The system's implementation is proportional to multiply, and the coefficients in front of Y (z) are replaced by 1.3.47 cause and effect signal.3.48 is the single-sided Z-transform of the step signal3.49 is a simple unilateral time shift transformation, will not consider the original cause and effect signal added.3.50 means the central symmetry, the even function is actually the symmetric value of the 2*0-n=-n and N.3.51

Code:x1 = [1,2,2]; x2 = [1,2,3,4]; y = Circonvt (x1,x2,4) n1 = 0:1:length (x1) -1;n2 = 0:1:length (x2) -1;ny = 0:1:length (y) -1;%%------------------------------ -----------------------------------percent START a%%------------------------------------------------------- ----------figure (' Numbertitle ', ' off ', ' Name ', ' Exameple5.14 ') set (GCF, ' Color ', ' white '); Subplot (3,1,1); Stem (n1,x1); Title (' Sequence x1 (n) '); Axis ([0,5,0,5]); Xlabel (' n '); Ylabel (' x1

Code:b = [1, 0,-1]; A = [1, 0,-0.81]; % [R, p, C] = Residuez (b,a); Mp = (ABS (p)) ' Ap = (angle (p)) '/pi%%----------------------------------------------percent START a determine H (z) and SKETC H-Percent----------------------------------------------figure (' Numbertitle ', ' off ', ' Name ', ' Example4.13 H (z) ' of its pole-zer o plot ') set (GCF, ' Color ', ' white '); Zplane (B,a); title (' Pole-zero plot '); Grid on;%%----------------------------------------------end%%-------

Brief process of c66x DSP interruption: 1. enable global interruption and sub-interruption. If the hardware detects the interruption, the CPU will jump. 2. The software pushes the values of Class A and Class B registers inside the CPU into the stack for storage, put the value of the current PC Register into the IRP/NRP register for interruption return to find the currently interrupted position. 3. The PC pointer of the CPU reads the address of the

1: custom data segments # Pragma data_section (symbol, ". Section ")Int32 symbol [length]; 2: I encountered a problem a few days ago. The DSP executes an algorithm for over 100 ms. After this time, we will set some optimization options for CCS. Reduced to 42 Ms. This still cannot meet our needs. Later I learned that I did not open the cache. Therefore, the execution takes a long time. I have been searching for it online for a long time and there is

Platform dm6437, seed Simulator Objective: to implement the hello World Program in the BIOS system 1. Create a hello_bios Project 2. Create a TCF configuration file and save the concurrent "hello_bios" as the file name, for example: 3. Right-click "Inset log" and name it "trace ". Save the settings as follows: 4. Add a file to the project, "hello_bios.tcf" and "hello_bioscfg.cmd ". (When you add these two files, some files will be automatically added) 5. add your own main source file he

some variable storage space. However, because many controllers, such as DSP, arm, and other high-end single-chip microcomputer, do not have a location-addressable area, they need to implement a data structure similar to a location operation, you need to perform operations such as bit or shift on the byte where the current BIT is located. In this case, whether the code is beautiful or not, the amount of generated code is too large, and the CPU cycle

First, the output formula of the FIR filter is:(If you can see the digital signal processing books, it's almost forgotten ...) ）Assumption: The input signal is x (n) = sin (2*pi*f1*n/fs) + sin (2*pi*f2*n/fs)The filter designed is a low-pass FIR filter using the Hamming window with a order of 10You can use the Filter design tool in MATLAB to design the filter:You can then create a C header file to obtain the desired value by designing the filter:The C program of the FIR filter is as follows:#incl

Digression: In recent studies and studies, I have inadvertently found some of the great gods and their writings that I am currently studying and studying in the same direction. Really "heart grow flowers flower not open, inadvertently inserted willow willow shade", "Pale no hiding place, marvelous", perhaps everything is the best arrangement. Recommended blogger: Ye Jianje--about speech enhancement: http://blog.csdn.net/YJJat1989/article/category/2118623 XIAOHOUZUOLIN--

Paving the way for Sandy Bridge This is such a basic law. It should be the first lesson in your computer history: "The number of transistors in an integrated circuit doubles every two years ." However, Moore's Law (Assumption proposed by Intel

The problem is as follows: As the processor's pipeline grows longer and the clock speed increases, the performance loss caused by the branch problem becomes more and more obvious. According to statistics, branch commands account for 10% of the total

The following content is reprinted: First, let's look at a piece of assembly code. LDR R0,=0x56000010 #R0 is set to be register GPBCON and is used to select pin function for Port B #in,out special function and others MOV R1,#0x0000

The definition of ADR is: a small range of addresses read pseudoinstructions, the ADR command reads the address value based on the relative offset of the PC to the register, when the source program is compiled, the ADR directive is replaced by an

1. The CPU performs an access to the external memory or I/O interface through Biu, which is called the CPU to perform a bus operation, according to a certain timing relationship. The cycle of performing a bus operation is called a bus cycle. In

The following describes how to set event and interrupt ISR in a detailed application. Taking the queue monitoring interruption (not excep) of QM as an example, it mainly includes configuring QM accumulator (used to monitor QM Queue) and ISR (ISR and

Text/zookeeper Zhang. zhilong # gmail.com because a chip clock and enable signal in the project have very strict requirements on synchronization. Therefore, the PWM timer is used to solve the problem. Project parameters: f2812, clock speed 100 m,

1. If the SPI speed cannot exceed 15 MB, a serious error will occur. 2. If the receiving method is interrupted, the spiccr character Length Control bit determines the interrupt length. For example, if the word length is 8 and the interrupt level is 1

Positive Solution: Generally, the stack is in the high-speed RAM zone, so local variables are faster, while global variables are in the ebss or BSS zone. This region is relatively large and is generally defined as external Ram, Which is slower. So