Xilinx Spartan-6 FPGA Series Design And Pin Planning Manual

13, Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 13 UG393 (v1.1) April 29, 2010 Chapter 2 Power Distribution System This chapter documents the power distribution system (PDS) for Spartan®-6 FPGAs, including decoupling capacitor selection, placement, and PCB geometries. A sim…

47, Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 47 UG393 (v1.1) April 29, 2010 Chapter 5 Design of Transitions for High-Speed Signals Each transition in the channel must be designed to minimize any negative impact on the link performance. This chapter addresses the inte…

57, Xilinx Spartan-6 FPGA Series Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 57 UG393 (v1.1) April 29, 2010 Microstrip/Stripline Bends Turns add capacitance because the trace at a 90° corner is 41% wider. That difference is reduced to 8% with a 45° turn. The addition of plane cutouts to a depth of 30 mi…

45, Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 45 UG393 (v1.1) April 29, 2010 Traces Trace Routing High-speed serial differential traces are routed with the highest priority to ensure that the optimal path is available to these critical traces. This reduces the need for bends and v…

7, Spartan-6 FPGA PCB Design and Pin Planning www.xilinx.com 7 UG393 (v1.1) April 29, 2010 Preface About This Guide This guide provides information on PCB design for Spartan®-6 devices, with a focus on strategies for making design decisions at the PCB and interface level. Guide Conten…

14, 14 www.xilinx.com Spartan-6 FPGA PCB Design and Pin Planning UG393 (v1.1) April 29, 2010 Chapter 2: Power Distribution System Required PCB Capacitor Quantities Table 2-1 lists the PCB decoupling capacitor guidelines per V CC supply rail. Table 2-1: Required PCB Capacitor Quantities per Device…