Multiple Cores

-- DISCONTINUED PRODUCT --

Note: Although not illustrated, if the optional Management Interface is used, host_clk can also be shared between cores.

IBUFG BUFG

gtx_clk

1-Gigabit Ethernet MAC

gtx_clk gmii_rx_clk

1-Gigabit Ethernet MAC

gtx_clk gmii_rx_clk

BUFG IBUFG

gmii_rx_clk1

BUFG IBUFG

gmii_rx_clk2

Figure 10-3:Clock Management Logic with External GMII (Multiple Cores)

With RGMII

Figure 10-4illustrates sharing clock resources across multiple instantiations of the core using the optional RGMII. gtx_clk may be shared between multiple cores as illustrated, resulting in a common transmitter clock domain across the device.

As a general rule, a common receiver clock domain is not possible. Each core receives an independent receiver clock from the PHY attached to the other end of the RGMII—as illustrated in Figure 10-4. This results in a separate receiver clock domain for each core.

Note: Although not illustrated, if the optional Management Interface is used, host_clk can also be shared between cores.

1-Gigabit Ethernet MAC v8.5 User Guide

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UG144 April 24, 2009

UG144 specifications

The Xilinx UG144, a comprehensive user guide for the versatile Zynq-7000 SoC (System on Chip) architecture, serves as an essential resource for developers and engineers designing embedded systems. Emphasizing the blend of programmable logic and processing power, this guide highlights the array of features and technologies that make the Zynq-7000 series particularly attractive for a wide range of applications.

One of the standout characteristics of the Zynq-7000 is its dual-core ARM Cortex-A9 processor, which delivers substantial performance for complex processing tasks. This soft processor enables high-speed computation, making it ideal for applications in fields such as automotive, industrial automation, and telecommunications. The guide emphasizes the ability to run multiple operating systems, including Linux and real-time operating systems, providing developers with versatile options for application design.

Additionally, the Xilinx UG144 outlines the extensive programmable logic resources integrated within the Zynq-7000 device. This FPGA fabric allows for customization and parallel processing capabilities, allowing designers to create powerful hardware accelerators tailored to specific application needs. The guide details how these programmable logic resources can easily interface with the ARM processors through a high-bandwidth AXI interface, promoting efficient data flow between the hardware and software components.

Key features highlighted in the UG144 include advanced connectivity options, including PCIe, USB, and Serial interfaces, which facilitate communication with other devices and systems. Furthermore, the guide provides insights into the supported design tools, such as the Xilinx Vivado Design Suite, which aids in both hardware and software co-design. This integrated environment significantly reduces development time while providing an efficient workflow for prototyping and testing.

In terms of performance optimizations, the guide discusses support for digital signal processing (DSP) capabilities, making the Zynq-7000 suitable for high-performance applications such as video processing and data analytics. The built-in DSP slices allow for efficient execution of complex mathematical functions, which is crucial for real-time data processing tasks.

Overall, the Xilinx UG144 guide encapsulates the versatility, performance, and flexibility of the Zynq-7000 SoC architecture. With its combination of ARM processing and programmable logic, along with robust connectivity options and development tools, it empowers engineers to create innovative solutions across a spectrum of industries, solidifying Xilinx's position as a leader in the field of embedded system design.

Xilinx UG144 manual 3Clock Management Logic with External Gmii Multiple Cores

Models: UG144