PCI Specification 3.0_PCI 3.0 规范
PCI 3.0 规范,英文原版。PCI Local Bus Specification Revision 3.0PCI LOCAL BUS SPECIFICATION, REV.3.0ContentsPREFACESPECIFICATION.……13INCORPORATION OF ENGINEERING CHANGE NOTICES (ECNS)1查音音鲁垂音音13DOCUMENT CONVENTIONS.………14l. INTRODUCTION…151.1. SPECIFICATION CONTENTS······151.2. MOTIVATION……151.3. PCI LOCAL BUS APPLICATIONS1. 4. PCI LOCAL BUS OVERVIEW171.5. PCI LOCAL BUS FEATURES AND BENEFITS……181. 6. ADMINISTRATION…………………202. SIGNAL DEFINITION m...mn.. 212.1 SIGNAL TYPE DEFINITION222.2. PIN FUNCTIONAL GROUPS..…………222.2.1. System Pins……,…,…,,…,…232.2.2. Address and data pins242.2.3. Interface Control Pins........................252.2.4. Arbitration Pins(Bus Masters Only)272.2.5. Error Reporting Pins....垂看d。普音看鲁D指音着音,。音音自。音音音。音自垂272.2.6. Interrupt Pins( Optional)……282.2.7. Additional signals312.2.8.64- Bit bus extension pins( Optiona)…,,……………………………332.2.9. TAG/Boundary scan Pins(Optional).......342. 10. System Management Bus Interface Pins(Optional)352. 3. SIDEBAND SIGNALS362. 4. CENTRAL RESOURCE FUNCTIONS.····:·····.·············363. BUS OPERATION373.1 BUS COMMANDS373.1. Command definition373. 1.2. Command Usage rules393.2. PCI PROTOCOL FUNDAMENTALS423.2.1. Basic Transfer Control····:············.················433.2.2. Addressing.............143.2.3. Byle lane and Byte enable usage……563.2.4. Bus Driving and Turnaround非音垂垂·非573.2.5. Transaction Ordering and posting….583. 2.6. Combining Merging, and Collapsing。。音垂。音62PCI LOCAL BUS SPECIFICATION, REV.3.03.3. BUS TRANSACTIONS……643.3.1. Read transaction……………653.3.2. Write transaction3.3.3. Transaction termination.………….673.4. ARBItRAtION音垂3.4.1. Arbitration Signaling protoco1..…………………893.4.2. Fast Back-to-Back Transactions. .........................................................93.4.3. Arbitration Parking………………………………………93.5 LATENCY953.5.1. Target Latency…….953.5.2. Master Data latency……….….…….,….….…..……..….,983.5.3. Memory Write Maximum Completion Time limit3.5.4. Arbitration Latency3.6. OTHER BUS OPERATIONS……·。垂,音着垂。着音D。。着。D音着音垂。音着D音非非音垂音非·非1103.6.1. Device selection…....…,103.6.2. Special cycle...........3.6.3. IDSEL Stepping…………,,…,…,,…,,…,,,,,………,…1133.6.4. Interrupt acknowledg3.7. ERROR FUNCTIONS春音·。音垂1153.7.. Parity ger1153.7.2. Parity Checking...........………,163.7.3. Address parity errors…...…,…163.7.4.Error Reporting…17173.7.5. Delayed Transactions and Data Parity Errors.......... 203.7.6. Error Recovery.............,213. 8. 64-BIT BUS EXTENSION1233.8.1. Determining bus Width during System initialization.…….…,1263.9.64- BIT ADDRESSING…..…………………………………………1273.10SPECIAL DESIGN CONSIDERATIONS.1304. ELECTRICAL SPECIFICATION.. m.m.9.1374.1. OVERVIEW…1374.1.1. Transition Road Map……1374.1.2. Dynamic vs Static Drive specificalion…1384.2. COMPONENT SPECIFICATION.……,………………,1…………………1394.2.1. 5V Signaling environment1404.2.2. 33V Signaling environment鲁鲁·垂垂1464.2.3. Timing specification1504.2.4.1determinate Inputs and metastable作,…………1554.2.5. Vendor provided specification..,..…,.…………….………17564.2.6. Pinout recommendation157PCI LOCAL BUS SPECIFICATION. REV.3.04.3. SYSTEM BOARD SPECIFICATION.………1584.3.1. Clock skew,…………………1584.3.2.R··1584.3.3. Pull-ups:····.················:·····…1614.3.4Power1634.3.5. System Timing Budget. ...........1644.3.6. Physical requirements............………674.3.7. Connector Pin assignments……/6844. ADD-IN CARD SPECIFICATION1714.4.1.Add- in Card Pin Assignment..,.,.,………………,1714.4.2. Power Requirements….,.,.,.,.,.,.,,.….,764.4.3. Physical requirements.........1785. MECHANICAL SPECIFICATION1815.1. OVERVIEW1812. ADD-IN CARD PHYSICAL DIMENSIONS AND TOLERANCES...........1825.3. CONNECTOR PHYSICAL DESCRIPTION…………………1954. CONNECTOR PHYSICAL REQUIREMENTS. ...............................2055. CONNECTOR PERFORMANCE SPECIFICATION……………,…2066. SYSTEM BOARD IMPLEMENTATION……………2076. CONFIGURATION SPACEb●看●鲁D鲁0e●2136. 1. CONFIGURATION SPACE ORGANIZATION音垂垂D·垂看垂…2136.2. CONFIGURATION SPACE FUNCTIONS .......................2166.2.1. Device ldentification鲁垂垂2166.2.2. Device Control鲁着鲁D垂2176.2.3. Device status2196. 2.4. Miscellaneous registers·······:········:···:·:··:·:······:··············4······:····2216.2.5. Base addresses……………………….22463. PCI EXPANSION ROMS2286.4. VITAL PRODUCT DATA.2296.5. DEVICE DRIVERS2296.6. SYSTEM RESET.…………………………2306.7. CAPABILITIES LIST2308. MESSAGE SIGNALED INTERRUPTS ...................................................................2316.8.1. MSI Capability Structure..............2326.8.2. MSl-X Capability and Table structures……………….……..2386.8.3. MSI and Msi-X Operation2467. 66 MHZ PCI SPECIFICATION2557. 1. INTRODUCTION2557.2. SCOPE7. 3. DEVICE IMPI TION CONSIDERATIONS7.3.1. Configuration space.......2557. 4. AGENT ARCHITECTURE256PCI LOCAL BUS SPECIFICATION, REV.3.07.5. PROTOCOL.……2567.5.1.66 MHZ ENABLE(M66EN) Pin definition.…………,………,,2567.52Latency..-..-.-2577.6. ELECTRICAL SPECIFICATION……………2577.6.. Overview·.·······.··2577.6.2. Transition roadmap to 66 MHz PCI··········.2577.6.3. Signaling Environment.......... 2587.6.4. Timing specification.……2597.6.5. Vendor provided specification. 26.57.6.6. Recommendations·.·························:············:······:········.:··········2657.7. SYSTEM BOARD SPECIFICATION.………,…,……………2667.7.1. Clock Uncertainty ......2667.7.2. Reset2677.7.3. Pullups..2677.7.4. Power..······.·.·::·····布鲁····音D鲁番。是。音垂看····非D∴2677.7.5. System Timing Budget7.7.6. Physical requirements2687.7.7. Connector Pin assi! nments…..,.,.,..,.,.,..,.,.,2697.8. ADD-IN CARD SPECIFICATIONS春音·。音垂2698. SYSTEM SUPPORT FOR SMBUSn2718. 1. SMBUS SYSTEM REQUIREMENTS2718.1.1. Power………278. 2. Physical and Logical sMBi27l8.1.3. Bus connectivit2728.1.4. Master and slave support....….….…..…..…..,2738.1.5. Addressing and Configuration2738.1.6.Ele2748.1.7. SMBus behavior on Pcl reset.........................2748.2.ADD- IN CARD SMBUS REQUIREMENTS…………2758.2.7Connection2758.2.2. Master and Slave Support...,.…..…….…,...….,2758.2.3. Addressing and Configuration……,…,…,……,…,…,…,….….…..….,2758. 2. 4. Power2758. 2.5. Electrical.········.····························275A. SPECIAL CYCLE MESSAGES●鲁●e鲁277A 1. MESSAGE ENCODINGS277A,2. USE OF SPECIFIC ENCODINGS ................................................277B. STATE MACHINES279B. 1. TARGET LOCK MACHINE·;.···.:..···:...···:··.·:····281B.2. MASTER SEQUENCER MACHINE283B 3. MASTER6PCI LOCAL BUS SPECIFICATION. REV.3.0C. OPERATING RULES289C 1. WHEN SIGNALS ARE STABLE..·····.:·.·.::···:·;289C.2. MASTER SIGNALS…音·。·看290C.3. TARGET SIGNALS…291C.4. DATA PHASES…292C.5. ARBITRATION.……………………………………292C.6. LATeNCY······:“·······293C.7. DEVICE SELECTION……………,……………………………293C 8. PARITY垂垂垂D·垂294D. CLASS CODESD 1. BASE CLASS OOH...w.w...296D 2. BASE CLASS OlH296D. 3. BASE CLASS O2H··297D 4. BASE CLASS O3H297D.5. BASE CLASS04H.………………………298D. 6. BASE CLASS OSH298D.7. BASE CLASS06H...………….…………………299D 8. BASE CLASS OZH,300D 9. BASE CLASS OSH.301D.10. BASE CLASS C9H.……………………………………………….301D.11. BASE CLASS OAH.…………………302D 12. BASE CLASS OBH302D. 13. BASE CLASS OCH303D.14. BASE CLASS ODH….…304D. 15. BASE CLASS OEH304D. 16. BASE CLASS OFH·····.····;····:·;:·······304D.17. BASE CLASS JOH.……………………………………………1305D, 18. BASE CLASS 11H305E. SYSTEM TRANSACTION ORDERINGE.I. PRODUCER- CONSUMER ORDERING MODEL308E. 2. SUMMARY OF PCI ORDERING REQUIREMENTS310E.3. ORDERING OF REQUESTS........................................311E.4. ORDERING OF DELAYED TRANSACTIONS…………312E.5. DELAYED TRANSACTIONS AND LOCK#.317E.6. ERROR CONDⅠ TIONS……318. EXCLUSIVE ACCESSES..m.msn0..319F.1. EXCLUSIVE ACCESSES ON PCIF 2. STARTING AN EXCLUSIVE ACCESS321F.3. CONTINUING AN EXCLUSIVE ACCESS323F 4. ACCESSING A LOCKED AGENT324F 5. COMPLETING AN EXCLUSIVE ACCESS325F. 6. COMPLETE BUS LOCK ......................................................................325IO SPACE ADDRESS DECODING FOR LEGACY DEVICES..9.... 327PCI LOCAL BUS SPECIFICATION, REV.3.0CAPABILITY IDS。,0329I. VITAL PRODUCT DATA331VPD FORMAT3I.2COMPATIBILITY……………………………334L.3. VPD DEFINITIONS3341.3.1. VPD Large and small resource Data Tags......·D垂看3341.3.2. VPD Example…3378PCI LOCAL BUS SPECIFICATION. REV.3.0FiquresFIGURE -I: PCI LOCAL BUS APPLICATIONS春DFIGURE 1-2: PCI SYSTEM BLOCK DIAGRAM17FIGURE2-1: PCI PIN LIST.…………..…………21figure 3-1: ADDRESS PHASE FORMATS OF CONFIGURATION TRANSACTIONS...... 48Figure 3-2: LAYOUT OF CONFIG ADDRESS REGISTER, ..............................................50Figure 3-3: HOST BRIDGE TRANSLATION FOR TYPE O CONFIGURATION TRANSACTIONSADDRESS PHASE51FIGURE3-4: CONFIGURATION READ…………156FIGURE3-5: BASIC READ OPERATION………………………65FIGURE 3-6: BASIC WRITE OPERATION66FIGure 3-7: MASTER INITIATED TERMINATION........................ 68FIGURE3-8: MASTER- ABORT TERMINATION…………69Figure 3-9: RETRY. ..........................................................................................................73FiGure 3-10: DISCONNECT WITH DATA. ........................74FiGure 3-11: MASTER COMPLETION TERMINATION:·:····:··.·4····.···…75FiGURE 3-12: DISCONNECT-1 WITHOUT DATA TERMINATION·····76Figure 3-13: DISCONNECT-2 WITHOUT DATA TERMINATION76FiGure 3-14: TARGET-ABORT…177figure 3-15: BASIC ARBITRATIONFIGuRE 3-16: ARBITRATION FOR BACK-TO-BACK ACCESS…94FiGurE 3-17: DEVSEL# AsSERTION·····:···.·:··110Figure 3-1 8: IDSEL STEPPING114FiGure 3-19: INTERRUPT ACKNOWLEDGE CYCLE. ...................................................114FIGURE3-20: PARITY OPERATION………116FIGuRE 3-21: 64-BIT READ REQUEST WITH 64-BIT TRANSFER125FIGURE 3-22: 64-BIT WRITE REQUEST WITH 32-BIT TRANSFER..........126FIGURE 3-23 64-BIT DUAL ADDRESS READ CYCLE129FIGURE 4-1: ADD-IN CARD CONNECTORS...........................138FIGURE4-2:V/ICURⅤ ES FOR5 V SIGNALING.…………………143FIGURE 4-3: MAXIMUM AC WAVEFORMS FOR 5V SiGnaling145FIGURE 4-4: V/I CURVES FOR 3.3V SIGNALING148FIGURE4-5:MAⅹ IMUM AC WAⅤ EFORMS FOR3.3ⅴ SIGNALING………150FIGURE 4-6: CLOCK WAVEFORMS151FIGURE 4-7: OUTPUT TIMING MEASUREMENT CONDITIONS.··4·:······.·154FIGURE4-8: INPUT TIMING MEASUREMENT CONDITIONS…………154FIGURE 4-9: SUGGESTED PINOUT FOR POFP PCI COMPONENT···“···:.···.····:·········157FIGURE4-10: CLOCK SKEW DIAGRAM………158FIGURE 4-1: RESET TIMING16lFIGURE4-12: MEASUREMENT OF TPROP,3.3 VOLT SIGNALING……………166FIGURE 5-1: PCI RAW ADD-IN CARD(3.3V, 32-BIT).183FIGURE 5-2: PCI RAW VARIABLE HEIGHT SHORT ADD-IN CARD(3.3V, 32-BIT)..........184FIGURE 5-3: PCI RAW VARIABLE HEIGHT SHORT ADD-IN CARD(3.3V, 64-BIT)....185FIGURE 5-4: PCI RAW LOW PROFILE ADD-IN CARD(3.3V, 32-BIT)..........186PCI LOCAL BUS SPECIFICATION, REV.3.0FIGURE5-5: PCI ADD-Ⅰ N CARD EDGE CONNECTOR BEⅤEL……187FIGURE56: PCI ADD-IN CARD ASSEMBLY(3.3V)……………………………88FIGURE 5-7: LOW PROFILE PCI ADD-IN CARD ASSEMBLY 3.3V)189FIGURE 5-8: PCI STANDARD BRACKET………190FIGuRE 5-9: PCI LOW PROFILE BRACKET191FIGURE 5-10: PCI STANDARD RETAINER···192FIGURE5-11: IO WINDOW HEIGHT∴………………193FIGURE 5-12: ADD-IN CARD INSTALLATION WITH LARGE IO CONNECTOR.......194FIGURE 5-13: 32-BIT CONNECTOR196FIGURE 5-14: 3.3V/32-BIT CONNECTOR LAYOUT RECOMMENDATION. ........................197FIGURE5-15:3.3V/64-BIT CONNECTOR198FIGURE 5-16: 3.3V/64-BIT CONNECTOR LAYOUT RECOMMENDATION 199FIGURE 5-17: 3.3V/32-BIT ADD-IN CARD EDGE CONNECTOR DIMENSIONS ANDTOLERANCES2(垂D·。垂,音着垂。着音D。。着。D音着音垂。音着音FIGURE 5-18: 3.3V/64-BIT ADD-IN CARD EDGE CONNECTOR DIMENSIONS ANDTOLERANCES….201FIGURE5-19: UNIVERSAL 32-BIT ADD-IN CARD EDGE CONNECTOR DIMENSIONS ANDTOLERANCES………………………………202FIGURE 5-20: UNIVERSAL 64-BIT ADD-IN CARD EDGE CONNECTOR DIMENSIONS ANDTOLERANCES203FIGURE5-21:PCⅠADD- IN CARD EDGE CONNECTOR CONTACTS……204FIGURE5-22: CONNECTOR CONTACT DETAIL………………205FIGURE 5-23: PCI CONNECTOR LOCATION ON SYSTEM BOARD208FIGURE5-24:32- BIT PCI RISER CONNECTOR……209FIGURE 5-25: 32-BIT/3.3V PCI RISER CONNECTOR FOOTPRINT210FIGURE 5-26: 64-BIT/3.3V PCI RISER CONNECTOR211FIGuRE5-27:64-BI/3.3ⅴ PCI RISER CONNECTOR FOOTPRINT∴………212FIGURE 6-1: TYPE OOH CONFIGURATION SPACE HEADER215FIGURE 6-2: COMMAND REGISTER LAYOUT217FIGURE6-3: STATUS REGISTER LAYOUT……………………………219FIGURE 6-4: BIST REGISTER LAYOUT222FIGURE 6-5: BASE ADDRESS REGISTER FOR MEMORY........... 225FIGURE 6-6: BASE ADDRESS REGISTER FOR L/O225鲁着D音看FIGURE 6-7: EXPANSION ROM BASE ADDRESS REGISTER LAYOUT.....,..... 228FIGURE6-8: EXAMPLE CAPABILITIES LIST…….231FIGURE6-9: MSI CAPABILITY STRUCTURES…..……233FIGURE 6-10: MSI-X CAPABILITY STRUCTURE238FIGurE 6-11: MSI-X TABLE STRUCTURE翻音。音239FIGurE 6-12: MSI-X PBA STRUCTURE…239FIGURE 7-1: 33 MHZ PCI VS 66 MHZ PCI TIMING······:··················257FIGURE7-2:3.3 V CLOCK WAVEFORM.…………259FIGURE 7-3: OUTPUT TIMING MEASUREMENT CONDITIONS263FIGURE -4: INPUT TIMING MEASUREMENT CONDITIONS263FIGURE75:TvAL(MAX) RISING EDGE…………264FIGURE 7-6: TVAL(MAX) FALLING EDGE·265FIGURE77:TVAL(MIN) AND SLEW RATE……26510
- 2020-06-05下载
- 积分:1
Gardner 算法
Gardner算法,用于在通信过程中的时钟恢复-(+1)(-1)121=(+1)A(-2)1+一IC+223工(+1)(-1)(t-2)+12C1=I-j(-1)(1-2)11-J从而可得y(r)=∑cx(m-1)=C2xmx+2)+C-1x(m+1)+0(n)+Cix(m-1)22时钟误差检测在 Gardner算法中,每个符号仅需要两个采样点,一个在符号判决点附近,另一个在两个符号判决点中间附近,用连续个采样点来求定时误差,并且与载波相位偏差无关。计算公式可以表示为REx()x〔2.3环路滤波器及数控振荡器由时钟误差检测器得到到时钟误差必须绎环路滤波器滤去高频噪声,以减小定时误差抖动,并通过数控振荡器来控钊基点n和小数偏差u。环路滤波器系数K和κ2与相对环路等效噪声带宽B和咀尼系数S及鉴相器增益K有关。公式如下14B12Bk|1+4定时恢复环的内插滤波器由数控振荡器控制,它接收定时误差信号,给内插滤波器提供内插运算所需要的参数m和山,数控振荡器的时钟频率为1/T,其计算过程妇图3所示。n(one +1)寄存器几0:(2+17m2+(m2+)图3数控振荡器的计算过程数控振荡器(NO)是一个相位递减器,它的差分方程为:7(m)=[(m-1)-Wm-1)]mod-1md为模函数,只取余数部分,n(m)为第m个工作吋钟的NCO寄存器内容,W(m)为NO控制字,即相位递减器的步长,两者都是正小数。3仿真结果根据环路设计,我们进行了 Matlab仿真。仿真采用16QAM调制方式,采样时钟频率为80Kz,符号频率为20KHz,对环路滤波器参数的设置,其中的阻尼系数取经验值0.707,当k1取0.6,k2取0.003时,在信噪比为15邢B的情况下,环路的收敛效果比较好,图4、图5分别为定时误差和小数偏差的仿真「线。从仿頁结果可以看岀,用此环路实现的定时恢复,定时误差的收敛速度比较快,不到500个符号,环眳就能达到稳定,且收敛之后定时误差抖动比较小,系统稳定性较髙。且很重要的一点是,环路屮采用的定时淏差检测算法是 Gardner算法,此算法和载波相位冮相独立,定时误差不受载波的影响,这样定时恢复环路与载波同步在接收系统中勍可以独立工作,増强了系统灵活性。0.5图4定时误差的收敛曲线0.80.20.5u的收敛曲线图5小数偏差的仿真曲线
- 2020-12-08下载
- 积分:1