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Manual Xilinx XAPP169

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Summary
  • Xilinx XAPP169 - page 1

    XAPP169 (v1.0 ) November 24, 1999 www .x ilinx.com 1 1-800- 255-7778 Summary This applic ation note illustr ates the use of Xi linx Sp artan-II F PGA and an IDT RC32364 RISC control ler in a ha ndheld, cons umer ele ctronics p latform. S pecific ally the target appl ication is an MP3 audi o player wi th advanc ed user in terface f eatures. In this ...

  • Xilinx XAPP169 - page 2

    2 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R MP3 T e chnology MP3 refe rs to the MP EG Lay er 3 audio c ompressi on schem e that was d efined as part of th e Internati onal Stan dards O rganizati on (ISO ) Movi ng Pict ure Exp erts Gro up (MPE G) audio/ video coding sta ndard. M ...

  • Xilinx XAPP169 - page 3

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 3 1-800-255-7 778 R IDT RC32364 RISCont roller™ The proces sor chos en for this design is the IDT RC323 64. The fea tures of this d evice tha t are leve raged in this applic ation are: • Paged mem ory man agemen t unit. • High-perfo rmance, 175 ...

  • Xilinx XAPP169 - page 4

    4 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R The vari able page size le ts eac h mapping indep endently represent memory regions tha t can range from 4 KB t o 16 MB. Thi s featur e lets the system designer ad just the address mapping granula rity for di fferent memory regions . ...

  • Xilinx XAPP169 - page 5

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 5 1-800-255-7 778 R The RC323 64 inter faces to the sys tem throu gh a 32-b it multi plexe d address/ data bu s. The b us offers a rich set of si gnals to c ontrol transfers of which o nly a su bset was require d for this applica tion. Fi gure 4 shows ...

  • Xilinx XAPP169 - page 6

    6 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R Crystal CS4343 Stereo DAC The Digital -to-Analo g Conver ter chosen for this des ign is the Crystal CS 4343 from Cirrus Logic. T his devic e featur es: • 1.8V to 3.3 V operat ion. • 24-bit con version at up to 96 kHz. • Digi tal ...

  • Xilinx XAPP169 - page 7

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 7 1-800-255-7 778 R The serial port can be conf igured for seve ral operatin g modes . The mode of ope ration ch osen for this applicat ion is re ferred to in the CS4 343 docum entation a s "Serial Audio For mat 2". Figure 7 gives an ov ervi ...

  • Xilinx XAPP169 - page 8

    8 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R Samsung FLASH Memory The FLASH me mory cho sen for this des ign is the KM 29U6400 0T 8M x 8 devi ce from Sam sung Semicon ductor . This devic e is base d on NAND FLASH te chnology and is popul ar in MP3 p layer applica tions due to it ...

  • Xilinx XAPP169 - page 9

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 9 1-800-255-7 778 R Micron SDRAM Memory The S DRAM memo ry chose n for this design is the MT 48LC1M16 A1S - 51 2K x 16 x 2 bank device fr om Micron S emicond uctor . This devi ce is a vailable i n speed grad es from 125 to 166 MHz oper ating ove r an ...

  • Xilinx XAPP169 - page 10

    10 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R 11 11 11 RAS# REFRESH CONTROLLER 2,048 REFRESH COUNTER CAS# 256 256 (x16) 8 COLUMN- ADDRESS BUFFER BURST COUNTER ROW- ADDRESS MUX CLK CS# WE# CKE 256 (x16) BANK1 MEMORY ARRAY (2,048 x 256 x 16) SENSE AMPLIFIERS I/O GATING DQM MASK LO ...

  • Xilinx XAPP169 - page 11

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 11 1-800-255-7 778 R National Semiconductor USBN9602 USB Function Controller The USB interfac e in the d esign is based o n a Nati onal Semi conduct or USBN96 02 con troller . This d evice, pac kaged in a 28-pin SOIC pac kage, su pports fu ll speed US ...

  • Xilinx XAPP169 - page 12

    12 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R System Implementation This secti on descr ibes how all of the se piece s are i ntegrated into a com plete system. First describe d is the s oftware arc hitecture a nd the f unctionalit y of the key mod ules. Nex t is the archite ctur ...

  • Xilinx XAPP169 - page 13

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 13 1-800-255-7 778 R The RTOS provides process schedul ing and m emory al loca tion funct ions. The RTOS could be any of th e commer cially a vailabl e packages . Proba bly more o f a fac tor than any tech nical iss ue is the licen sing model for the ...

  • Xilinx XAPP169 - page 14

    14 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R The refer ence cod e that was develope d for the stan dard is av ailable from the Fr aunhofer Institute at the foll owing URL: http://www .iis.fhg.de /amm/techi nf/layer3/i ndex.html A comm ercial d ecoder i s availab le from X audio ...

  • Xilinx XAPP169 - page 15

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 15 1-800-255-7 778 R While m ost of the b locks are fairly independ ent, the F LASH, SDRA M, and Comp actFla sh interfac es share c ommo n address a nd data busses. While th is resul ts in a fai rly comp lex muxing s cheme for th ese datapa ths it is ...

  • Xilinx XAPP169 - page 16

    16 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R CPU Interface The CPU Interfac e block per forms three function s: protoc ol conversi on, CPU initia lizatio n and address de-mul tiplexi ng. Figure 16 shows a block di agram of t his block . The CPU i nitiali zation bl ock gen erate ...

  • Xilinx XAPP169 - page 17

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 17 1-800-255-7 778 R There is no dire ct softwar e suppor t requi red for thi s block, b ut the US B inter face itsel f requir es consid erable s oftware fo r operation . This s oftware co nsists o f the USB p rotocol stack, w hich include s a US B in ...

  • Xilinx XAPP169 - page 18

    18 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R The LCD Co ntroller is an IP bus master and f etches da ta for sc reen refres h indepen dently of CPU activ ities. Th e displa y data that is fe tched is loaded in to a FIF O using a block tr ansfer across th e IP bus. T he shift reg ...

  • Xilinx XAPP169 - page 19

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 19 1-800-255-7 778 R The onl y softwar e suppo rt requ ired for th is bloc k is t he screen BIOS wh ich con sists of fu nctio ns to generate screen imag es by manip ulating the fr ame buffer memor y . This buffer appears as an array of 5 12, 32-bi t w ...

  • Xilinx XAPP169 - page 20

    20 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R SDRAM Contro ller The SDRA M controll er desi gn ( Figure 19 ) is based o n the de sign dev eloped by X ilinx in applica tion no te XAPP 134: Virtex Synthe sizabl e High Perf ormance S DRAM Control ler . T he changes made in the orig ...

  • Xilinx XAPP169 - page 21

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 21 1-800-255-7 778 R When the a rchitec ture for th is sys tem was be ing plann ed, one is sue that n eeded to be address ed was wh ether to exec ute the pr ogram imag e directly from FLA SH or to copy it to SDRAM. T here were two k ey issu es that ne ...

  • Xilinx XAPP169 - page 22

    22 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R Software support required fo r this bloc k consis ts of the FL ASH BIO S which impl ements l ow leve l primit ives for p rogramm ing, e rasing, and chec king va lidity o f memor y blocks . IRDA Controller The IRDA control ler is es s ...

  • Xilinx XAPP169 - page 23

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 23 1-800-255-7 778 R Audio DAC Interface The inte rface for t he CS4343 con sists of two separat e function al block s, one fo r each of the serial in terfaces that are required t o suppor t this devic e. Figu re 22 shows a b lock di agram of this int ...

  • Xilinx XAPP169 - page 24

    24 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R Like the IRDA con troller , an interrupt is gener ated eve ry tim e the FIF Os tran sfer the ir last wo rd into th e shift regi sters. Assuming a 48 kH z audio s ampling rate, this will r esult in an interru pt every 83.3 µ s. T o p ...

  • Xilinx XAPP169 - page 25

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 25 1-800-255-7 778 R Spartan Device Selec tion Spartan dev ices a re availab le in a r ange of d ensities and pac kages. The followin g criter ia were used to s elect the device us ed in this applicati on: • I/O Pins. The design r equire s a total o ...

  • Xilinx XAPP169 - page 26

    26 www.xi linx .co m XAPP169 (v1.0 ) November 24, 1999 1-800-255-7 778 MP3 NG: A Next Generation Consumer Platform R References RC32 364 RISCon troller , Hardware User’s Manu al , April 1999 , Integ rated Dev ice T echno logy Xilinx Sp artan-II FPGA Data She et , Ja nuary 2000 , Xilin x IRMS6100 1.15 Mb/s IrDT Data T ransceiver Data Sheet , May 1 ...

  • Xilinx XAPP169 - page 27

    MP3 NG: A Next Generation Consumer Platform XAPP169 (v1 .0) November 24 , 1999 w ww .x ilin x.c om 27 1-800-255-7 778 R Revision History © 1999 Xil inx, Inc. All rights reserved. All Xili nx tradema rks, registe red tradema rks, patents , and disclaim - ers ar e as liste d at http://www .xilinx .com/legal. htm . All o ther trademark s and regi ste ...

Manufacturer Xilinx Category MP3 Player

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