This example sets up the PLL in x10/2 mode, divides SYSCLKOUT by six to reach a 25Mhz HSPCLK (assuming a 30Mhz XCLKIN). The
clock divider in the ADC is not used so that the ADC will see the 25Mhz on the HSPCLK. Interrupts are enabled and the EVA is setup to generate a periodic ADC SOC on SEQ1. Two channels are converted, ADCINA3 and ADCINA2.
) Compression using huffman code
-with a number of bits k per code word
-provide huffman table
Huffman coding is optimal for a symbol-by-symbol coding with a known input probability distribution.This technique uses a variable-length code table for encoding a source symbol. The table is derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol .Huffman coding uses a specific method for representing each symbol, resulting in a prefix code that expresses the most common characters using shorter strings of bits than those used for less common source symbols.The Huffman coding is a procedure to generate a binary code tree.
USBHostSlave is a USB 1.1 host and Device IP core.
– Supports full speed (12Mbps) and low speed (1.5Mbps) operation.
– USB Device has four endpoints, each with their own independent FIFO.
– Supports the four types of USB data transfer control, bulk, interrupt, and isochronous
transfers.
– Host can automatically generate SOF packets.
– 8-bit Wishbone slave bus interface.
– FIFO depth configurable via paramters.
a true random number generator (TRNG) in hardware which is targeted for FPGA-based crypto embedded systems. All crypto protocols require the generation and use of secret values that must be unknown to attackers.Random number generators (RNG) are required to generate public/private key pairs for asymmetric algorithm such as RSA and symmetric algorithm such as AES.
Main program running when workpiece is ready on deferent belt(deferent_ready=ture).
* Call Square_Wave subroutine to generate 0.5ms square wave on P1.2 to drive
* electromotor,then drive deferent belt step forward. When it steps to the measure
* zone, it stops to be measured. Then call A_D subroutine to transform analog
* signals to digital signals , after then call serial subroutine to transfer
* digital signals to PC. Call square wave subroutine to drive deferent belt step to
* original position waitting for defere ready flag to run the next circle.
This book provides the reader with the basics in radio engineering,
the techniques needed to generate, control, detect, and use radio waves. The
text approaches the relevant problems both from the electromagnetic theory
based on Maxwell抯 equations and from the circuit theory based on Kirchoff
and Ohm抯 laws. Brief introductions to the electromagnetic theory as well
as to the circuit theory are provided. Besides passive transmission lines and
components, active RF circuits are also addressed.
UML for C# This paper describes the primary constructs in the C# language and how they are modeled in WinA&D using the UML notation. The model can be used to generate C# code. WinTranslator scans source code to generate a UML model for an existing project.
