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Zynq-7000 All Programmable SoC PCB Design Guide UG933 (v1.8) November 7, 2014

Zynq-7000 PCB Design Guide www.xilinx.com 10UG933 (v1.8) November 7, 2014Chapter 2: PCB Technology BasicsZ-direction spacing of signal trace layers t

Zynq-7000 PCB Design Guide www.xilinx.com 11UG933 (v1.8) November 7, 2014Chapter 2: PCB Technology BasicsReturn CurrentsAn often neglected aspect of

Zynq-7000 PCB Design Guide www.xilinx.com 12UG933 (v1.8) November 7, 2014Chapter 3Power Distribution SystemIntroductionThis chapter documents the pow

Zynq-7000 PCB Design Guide www.xilinx.com 13UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systemthe quantity per I/O bank. Device perfor

Zynq-7000 PCB Design Guide www.xilinx.com 14UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemTable 3-2 lists the decoupling requireme

Zynq-7000 PCB Design Guide www.xilinx.com 15UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemCapacitor SpecificationsThe electrical c

Zynq-7000 PCB Design Guide www.xilinx.com 16UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemPCB Bulk CapacitorsThe purpose of the bu

Zynq-7000 PCB Design Guide www.xilinx.com 17UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systeminches of the device’s outer edge is acc

Zynq-7000 PCB Design Guide www.xilinx.com 18UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systemsupply, often referred to as ripple volt

Zynq-7000 PCB Design Guide www.xilinx.com 19UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemFor example, if current demand in the de

Zynq-7000 PCB Design Guide www.xilinx.com 2UG933 (v1.8) November 7, 2014Revision HistoryThe following table shows the revision history for this docum

Zynq-7000 PCB Design Guide www.xilinx.com 20UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systemmoves at a different rate. Because momen

Zynq-7000 PCB Design Guide www.xilinx.com 21UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemIf tantalum capacitors are not available

Zynq-7000 PCB Design Guide www.xilinx.com 22UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemAs different capacitor values are select

Zynq-7000 PCB Design Guide www.xilinx.com 23UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systemplane, up through one via, through the c

Zynq-7000 PCB Design Guide www.xilinx.com 24UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemPlane InductanceSome inductance is assoc

Zynq-7000 PCB Design Guide www.xilinx.com 25UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systembetween power and ground planes decrease

Zynq-7000 PCB Design Guide www.xilinx.com 26UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution System• Both mounting inductances are reduced

Zynq-7000 PCB Design Guide www.xilinx.com 27UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution System• Ceramic chip capacitors with a lower E

Zynq-7000 PCB Design Guide www.xilinx.com 28UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemLMOUNT= 0.8 nH (based on PCB mounting ge

Zynq-7000 PCB Design Guide www.xilinx.com 29UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemCapacitor Placement BackgroundTo perform

Zynq-7000 PCB Design Guide www.xilinx.com 3UG933 (v1.8) November 7, 201412/04/2013 1.6Changed “DDR3” to “DDR3/3L” throughout document. Updated capaci

Zynq-7000 PCB Design Guide www.xilinx.com 30UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemAnother delay of the same duration occur

Zynq-7000 PCB Design Guide www.xilinx.com 31UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemUnconnected VCCO PinsIn some cases, one

Zynq-7000 PCB Design Guide www.xilinx.com 32UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemPDS MeasurementsMeasurements can be used

Zynq-7000 PCB Design Guide www.xilinx.com 33UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution System• Place the oscilloscope in infinite per

Zynq-7000 PCB Design Guide www.xilinx.com 34UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemThe measurement shown in Figure 3-8 and

Zynq-7000 PCB Design Guide www.xilinx.com 35UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemExcessive noise at a certain frequency i

Zynq-7000 PCB Design Guide www.xilinx.com 36UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemOptimum Decoupling Network DesignIf a hi

Zynq-7000 PCB Design Guide www.xilinx.com 37UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution Systemspecially designed capacitor network can

Zynq-7000 PCB Design Guide www.xilinx.com 38UG933 (v1.8) November 7, 2014Chapter 3: Power Distribution SystemOther improvements of geometry are via-i

Zynq-7000 PCB Design Guide www.xilinx.com 39UG933 (v1.8) November 7, 2014Chapter 4SelectIO SignalingIntroductionThe Zynq-7000 AP SoC SelectIO resourc

Zynq-7000 PCB Design Guide www.xilinx.com 4UG933 (v1.8) November 7, 2014Table of ContentsRevision History . . . . . . . . . . . . . . . . . . . . . .

Zynq-7000 PCB Design Guide www.xilinx.com 40UG933 (v1.8) November 7, 2014Chapter 4: SelectIO Signalingthe VIL threshold, the state is considered Low.

Zynq-7000 PCB Design Guide www.xilinx.com 41UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingSome I/O standards have attributes to control d

Zynq-7000 PCB Design Guide www.xilinx.com 42UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingThe SelectIO standards can be used in countless

Zynq-7000 PCB Design Guide www.xilinx.com 43UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingIn general, parallel resistive termination (RP)

Zynq-7000 PCB Design Guide www.xilinx.com 44UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingParallel termination can be less desirable than

Zynq-7000 PCB Design Guide www.xilinx.com 45UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingThe SSTL standards tend to not have rigid requi

Zynq-7000 PCB Design Guide www.xilinx.com 46UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingThe main transmission line should be kept as sh

Zynq-7000 PCB Design Guide www.xilinx.com 47UG933 (v1.8) November 7, 2014Chapter 4: SelectIO Signalingtopography is point-to-point or multi-point def

Zynq-7000 PCB Design Guide www.xilinx.com 48UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingIn general, parallel resistive termination (RP)

Zynq-7000 PCB Design Guide www.xilinx.com 49UG933 (v1.8) November 7, 2014Chapter 4: SelectIO Signalingexternal precision resistors placed on the VRN

Zynq-7000 PCB Design Guide www.xilinx.com 5UG933 (v1.8) November 7, 2014Chapter 6: Migration from XC7Z030-SBG485 to XC7Z015-CLG485 DevicesIntroductio

Zynq-7000 PCB Design Guide www.xilinx.com 50UG933 (v1.8) November 7, 2014Chapter 4: SelectIO SignalingLVTTL and LVCMOS do not specify any canonical t

Zynq-7000 PCB Design Guide www.xilinx.com 51UG933 (v1.8) November 7, 2014Chapter 5Processing System (PS) Power and SignalingPowerZynq-7000 AP SoC dev

Zynq-7000 PCB Design Guide www.xilinx.com 52UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and Signalingcapacitor to the adjace

Zynq-7000 PCB Design Guide www.xilinx.com 53UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingPS DDR Power SuppliesVC

Zynq-7000 PCB Design Guide www.xilinx.com 54UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingPS_DDR_VRN, PS_DDR_VRP

Zynq-7000 PCB Design Guide www.xilinx.com 55UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingMIO[7] and MIO[8] are d

Zynq-7000 PCB Design Guide www.xilinx.com 56UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingPS Clock and ResetPS_CL

Zynq-7000 PCB Design Guide www.xilinx.com 57UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingDynamic MemoryZynq-7000

Zynq-7000 PCB Design Guide www.xilinx.com 58UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingUnused DDR pins should

Zynq-7000 PCB Design Guide www.xilinx.com 59UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingX-Ref Target - Figure 5

Zynq-7000 PCB Design Guide www.xilinx.com 6UG933 (v1.8) November 7, 2014Chapter 1IntroductionAbout This GuideThis guide provides information on PCB d

Zynq-7000 PCB Design Guide www.xilinx.com 60UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingX-Ref Target - Figure 5

Zynq-7000 PCB Design Guide www.xilinx.com 61UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingDDR Supply VoltagesTabl

Zynq-7000 PCB Design Guide www.xilinx.com 62UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingDDR TerminationFor bett

Zynq-7000 PCB Design Guide www.xilinx.com 63UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingIn addition, DDR signal

Zynq-7000 PCB Design Guide www.xilinx.com 64UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingNote: For PS_DDR_DQxx,

Zynq-7000 PCB Design Guide www.xilinx.com 65UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingMIO/EMIO IP Layout Guid

Zynq-7000 PCB Design Guide www.xilinx.com 66UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and Signalingthe Zynq-7000 AP SoC de

Zynq-7000 PCB Design Guide www.xilinx.com 67UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingQSPIThe clock, data, an

Zynq-7000 PCB Design Guide www.xilinx.com 68UG933 (v1.8) November 7, 2014Chapter 5: Processing System (PS) Power and SignalingEquation 5-3For Fmax1,

Zynq-7000 PCB Design Guide www.xilinx.com 69UG933 (v1.8) November 7, 2014Chapter 6Migration from XC7Z030-SBG485 to XC7Z015-CLG485 DevicesIntroduction

Zynq-7000 PCB Design Guide www.xilinx.com 7UG933 (v1.8) November 7, 2014Chapter 2PCB Technology BasicsIntroductionPrinted circuit boards (PCBs) are e

Zynq-7000 PCB Design Guide www.xilinx.com 70UG933 (v1.8) November 7, 2014Chapter 6: Migration from XC7Z030-SBG485 to XC7Z015-CLG485 DevicesFunctional

Zynq-7000 PCB Design Guide www.xilinx.com 71UG933 (v1.8) November 7, 2014Chapter 6: Migration from XC7Z030-SBG485 to XC7Z015-CLG485 Devicesconnected

Zynq-7000 PCB Design Guide www.xilinx.com 72UG933 (v1.8) November 7, 2014Appendix AAdditional Resources and Legal NoticesXilinx ResourcesProduct Supp

Zynq-7000 PCB Design Guide www.xilinx.com 73UG933 (v1.8) November 7, 2014Appendix A: Additional Resources and Legal NoticesSolution CentersSee the Xi

Zynq-7000 PCB Design Guide www.xilinx.com 74UG933 (v1.8) November 7, 2014Appendix A: Additional Resources and Legal Notices°UG479, Xilinx 7 Series FP

Zynq-7000 PCB Design Guide www.xilinx.com 75UG933 (v1.8) November 7, 2014Appendix A: Additional Resources and Legal NoticesXilinx ISE Design Suite ht

Zynq-7000 PCB Design Guide www.xilinx.com 76UG933 (v1.8) November 7, 2014Appendix A: Additional Resources and Legal Notices°ARM Debug Interface v5.1

Zynq-7000 PCB Design Guide www.xilinx.com 77UG933 (v1.8) November 7, 2014Appendix A: Additional Resources and Legal Noticesterms contained in a licen

Zynq-7000 PCB Design Guide www.xilinx.com 8UG933 (v1.8) November 7, 2014Chapter 2: PCB Technology BasicsTracesA trace is a physical strip of metal (u

Zynq-7000 PCB Design Guide www.xilinx.com 9UG933 (v1.8) November 7, 2014Chapter 2: PCB Technology BasicsLandsFor the purposes of soldering surface mo