Edn Magazine December 2 2010


E-Book Content

DEC 2 Issue 23/2010 Superman’s X-ray vision would’ve come in handy Pg 56 EDN.comment Pg 9 www.edn.com Voices: DAC and the birth of the EDA Industry Pg 18 Signal Integrity: Impulsive behavior Pg 21 VOICE OF THE ENGINEER Design Ideas Pg 45 USE GPUs TO BOOST ACCELERATION Page 32 DESIGNING RELIABLE POWER-LINE COMMUNICATIONS Page 24 SOC-PLL DESIGN REQUIRES TRADE-OFFS Page 40 POWER MANAGEMENT | ANALOG & RF | INTERFACE & CONNECTIVITY | CLOCKS & TIMING | MEMORY & LOGIC | TOUCH & USER INTERFACE | VIDEO & DISPLAY | AUDIO Integrated Device Technology – Leader in PCI Express® Solutions PCI Express Switches Industry’s most comprehensive family of high-performance, scalable PCIe switching solutions t (FOBOE(FO1PSUGPMJP t 6QUPMBOFBOEQPSUEFWJDFT t )JHIMZGMFYJCMFQPSUDPOGJHVSBUJPOT t 6OQSFDFEFOUFEOPOUSBOTQBSFOU  CSJEHJOH /5# GVODUJPOTUP  FOBCMFNVMUJSPPUBQQMJDBUJPOT PCI Express Repeaters 5Gbps Gen 2 PCIe Signal Repeaters t 'PVSBOEFJHIUDIBOOFMTJHOBMSFQFBUFST t $PNQFOTBUFTGPSDBCMFBOE1$#USBDF  BUUFOVBUJPOBOE*4*KJUUFS t 1SPHSBNNBCMFSFDFJWFSFRVBMJ[BUJPOUP  E#BOEEFFNQIBTJTUPE# t -FBEJOHFEHFQPXFSNJOJNJ[BUJPOJO  BDUJWFBOETIVUEPXONPEFT t /PFYUFSOBMCJBTSFTJTUPSTPSSFGFSFODF  DMPDLTSFRVJSFE t $IBOOFMNVYNPEF EFNVYNPEF   UPDIBOOFMTNVMUJDBTU BOE  ;TXJUDIGVODUJPONPEF PCI Express Bridges High performance PCIe bridging to legacy PCI and PCI-X protocols t 6MUSBMPXQPXFSWFSTJPOGPS  DPOTVNFSBQQMJDBUJPOT t 'PSXBSENPEFCVGGFSPQUJNJ[BUJPO t 0OMZ1$*&YQSFTTCSJEHFTXJUI  4IPSU5FSN$BDIJOHGPSTJHOJGJDBOU  JNQSPWFNFOUJO1$*3FBEQFSGPSNBODF t 1JODPNQBUJCJMJUZXJUIDPNQFUJUJWF  PGGFSJOHGPSEVBMTPVSDJOHTPMVUJPO PCI Express Clocking Solutions Industry’s broadest offering of PCIe Gen1, Gen2 and Gen3 clock generation and buffering solutions t 8PSMET'JSTU1$*&YQSFTT(FO'BNJMZ  PG5JNJOH%FWJDFT t $MPDL(FOFSBUPSTBOE4ZOUIFTJ[FST t 4QSFBE4QFDUSVN$MPDL(FOFSBUPST t 'BOPVU#VGGFSTBOE.VYFT t +JUUFS"UUFOVBUPST t 'SFRVFODZ5SBOTMBUPST t ;FSP%FMBZ#VGGFST Integrated Device Technology The Analog and Digital Company™ For more information visit us online at www.IDT.com MachXO2™ PLD MachXO2. DO-IT-ALL DEVICES DEMAND A DO-IT-ALL PLD. With the MachXO2 PLD family, you now have everything you need to meet your low power, small form factor, high functionality and low price requirements for your next consumer or system design. Access free reference designs and software, development kits and supporting literature at: latticesemi.com/machxo2 Applications Benefits latticesemi.com/machxo2 And more... And more... ©2010 Lattice Semiconductor Corporation. All rights reserved. Lattice Semiconductor Corporation, L (& design), Lattice (& design), MachXO2 and specific product designations are either registered trademarks or trademarks of Lattice Semiconductor Corporation or its subsidiaries, in the United States and/or other countries. Other marks are used for identification purposes only, and may be trademarks of other parties. 12.2.10 contents Designing reliable power-line communications Use GPUs to boost acceleration No longer just for games, graphics-processing units can speed design and simulation programs and, ultimately, the code in your embedded systems. by Graham Prophet, Editor, EDN Europe 32 pulse System designers can source PLC from more than 10 semiconductor vendors. To choose, developers must understand the factors that affect PLC systems’ performance and reliability and the options for overcoming design challenges. by Ashish Garg and Angad Singh Gill, Cypress Semiconductor 24 Dilbert 14 12