UART 4 UART參考設計，Xilinx提供VHDL代碼 uart_vhdl
This zip file contains the following folders:
\vhdl_source -- Source VHDL files:
uart.vhd - top level file
txmit.vhd - transmit portion of uart
rcvr.vhd - - receive portion of uart
\vhdl_testfixture -- VHDL Testbench files. This files only include the testbench behavior, they
do not instantiate the DUT. This can easily be done in a Top-Level VHDL
file or a schematic. This folder contains the following files:
txmit_tb.vhd -- Test bench for txmit.vhd.
rcvr_tf.vhd -- Test bench for rcvr.vhd.
Compact Flash Support For Nios II 5.0, To download supporting materials for this new Compact Flash support, download the following .zip file, extract to a computer with Quartus II 5.0 & Nios II 5.0 installed, and proceed to use the hardware and/or software examples of your choice to proceed. Additional information is available in the readme.txt document, included in the Top-Level of the .zip file
The running time of quicksort can be improved in practice by taking advantage of the fast
running time of insertion sort when its input is “nearly” sorted. When quicksort is called on a
subarray with fewer than k elements, let it simply return without sorting the subarray. After the
Top-Level call to quicksort returns, run insertion sort on the entire array to finish the sorting process.
LIKE SO MANY OTHERS , THIS BOOK WAS WRITTEN BECAUSE WE COULDN ’ T FIND ONE LIKE IT . We
needed something to hand to all of those people who have come to us asking for “a good
book to read on RFID.” When we looked for candidates we found some great books, but
most were aimed at electrical engineers or Top-Level managers, with very little for those of
us who are in between. This book is for developers, system and software architects, and
project managers, as well as students and professionals in all of the industries impacted by
Radio Frequency Identification (RFID) who want to understand how this technology
works. As the title suggests, this book is about RFID in general and not just the most
recent developments; however, because so much is going on in the area of RFID for the
supply chain and especially the Electronic Product Code (EPC), we have devoted consider-
able space to these topics. Regardless of the type of RFID work you may be doing, we
think you will find something useful here.
The PCA9517 is a CMOS integrated circuit that provides level shifting between lowvoltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I2C-bus or SMBus applications.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of the I2C-bus by providing bidirectional buffering forboth the data (SDA) and the clock (SCL) lines, thus enabling two buses of 400 pF. Usingthe PCA9517 enables the system designer to isolate two halves of a bus for both voltageand capacitance. The SDA and SCL pins are over voltage tolerant and arehigh-impedance when the PCA9517 is unpowered.
