Altera Stratix IV GX Manual
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- Reference manual (78 pages) ,
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- Reference manual (44 pages)
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Summary of Contents for Altera Stratix IV GX
- Page 1 Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide 101 Innovation Drive Document Version: San Jose, CA 95134 Document Date: March 2009 www.altera.com...
- Page 2 Altera warrants performance of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed to in writing by Altera Corporation.
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Page 3: Table Of Contents
How to Contact Altera ........ - Page 4 Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation...
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Page 5: Introduction
The purpose of the PDN tool is to help the design of a robust power delivery network for Stratix IV GX devices by determining an optimum number, type, and value of decoupling capacitors needed for selected device/power rail to meet the desired up to F . - Page 6 PDN current gives rise to voltage fluctuation within the PDN, which may lead to logic and timing issues. You can reduce excessive voltage fluctuation by reducing PDN impedance. One design guide line is target impedance Z TARGET Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation...
- Page 7 Stratix IV GX devices. Table 1–1. Settings for Some Stratix IV GX Device Power Rails (Sheet 1 of 2) (Note 1) Allowable Ripple...
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Page 8: Major Tabs Of The Pdn Tool
1–4 Chapter 1: Power Delivery Network (PDN) Tool User Guide for Stratix IV Devices Major Tabs of the PDN Tool Table 1–1. Settings for Some Stratix IV GX Device Power Rails (Sheet 2 of 2) (Note 1) Allowable Ripple Transient Current... - Page 9 You can input design-specific information in the various tabs to arrive at a very accurate PDN profile for a given power supply. The following sections describe the major tabs for the tool. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide...
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Page 10: Bga Via
This tab takes the layout-specific information, such as the via drill diameter, via length, via pitch, and the number of power/ground via pairs under the BGA and calculates an effective via loop inductance and resistance value. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... -
Page 11: Plane Cap
You can enter the details specific to this design such as plane dimensions, dielectric material, and plane configuration to calculate an accurate capacitance value.You can save custom values, restore custom values, and restore the default settings. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... -
Page 12: Cap Mount
Custom field in the Decoupling Cap section of the library). As with the other tabs, you can save the changes made to the tab, restore the changes, and restore the tab back to the default settings. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... -
Page 13: X2Y Mount
As with the other tabs, you can save the changes made to the tab, restore the changes, and restore the tab back to the default settings. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... -
Page 14: Library
Dielectric Material Library You can change each of the default values listed in the respective sections to meet the specific needs of your design. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... - Page 15 The thickness of the dielectric material between the power/ground pair directly influences the amount of spreading/loop inductance that a decoupling cap can see with respect to the FPGA. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide...
- Page 16 Restore Default located at the top right-hand corner of the Library page. You can also restore the saved custom library by clicking Restore Custom. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation...
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Page 17: Decap Selection
Device/Power Rail Information Component Parameters Setting ■ ■ Electric Parameters and Design Guidelines ■ Decoupling Capacitor (High/Mid Frequency) ■ Decoupling Capacitor (Bulk) ■ ZEFF Plot © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... - Page 18 You select the device/power rail to work in this field. A pull-down menu with the names of the available devices and power rails in the Stratix IV GX family is shown when you click the corresponding cell. The tool validates the selected device/power rail combination.
- Page 19 Library tab. You also have the option of defining custom capacitor values (User5 and User6) for low/mid frequency decoupling specific to the design. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide...
- Page 20 Chapter 1: Power Delivery Network (PDN) Tool User Guide for Stratix IV Devices Major Tabs of the PDN Tool Plot The effective impedance that the Stratix IV GX device encounters is shown in (Figure 1–12). Other information, such as Z...
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Page 21: Bom
Print BOM on the top right corner. It defaults to the default printer assigned in the File/Print menu. You can also export the data as an .xls file by clicking Export Data. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... -
Page 22: Design Pcb Decoupling Using The Pdn Tool
Figure 1–14 in the Library tab. To use the default values, go directly to the Decap Selection tab to begin the analysis. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... -
Page 23: Derive Decoupling In A Single-Rail Scenario
2. Select the parameter setting for the PDN components. 3. Enter the electric parameters to set Z and F TARGET EFFECTIVE. 4. Derive the PCB decoupling scheme. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... - Page 24 Table 1–1 on page 1–3. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation...
- Page 25 Z TARGET Figure 1–16. Enlarged Plot of Zeff Using the Figure 1-16 Design © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide...
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Page 26: Derive Decoupling In The Power-Sharing Scenarios
. VCCIO 7A has four power via. The length of BGA via is EFFECTIVE assumed to be 25 mil. The PDN tool calculates that the F is approximately EFFECTIVE 70 MHz. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... - Page 27 Z TARGET Figure 1–17. Decap Selection Tab in a Power-Sharing Design © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide...
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Page 28: Summary
Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation... -
Page 29: Document Revision History
Email nacomp@altera.com Non-technical support (Software Email authorization@altera.com Licensing Note to table: (1) You can also contact your local Altera sales office or sales representative. © March 2009 Altera Corporation Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide... -
Page 30: Typographic Conventions
A warning calls attention to a condition or possible situation that can cause injury to the user. The angled arrow indicates you should press the Enter key. The feet direct you to more information on a particular topic. Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide © March 2009 Altera Corporation...