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Overview

UltraSoC provides a toolkit of more than 30 different modules that the SoC system architect can use in a variety of ways. We support any mixture of licensed-in IP and custom logic designed in-house. The system architect and design team have complete freedom to choose which blocks to monitor and to what level of detail. UltraSoC uses a message-based architecture that makes it entirely host interface agnostic . Modules range from dedicated, optimized IP to highly parametrized modules that are configurable at design-time and run-time.

  • Debug DMA module

    Provides memory access, enabling the debugger to read or write a block of memory via a bus fabric such as AXI, APB or OCP, in response to UltraSoC messages or events when preconfigured with a transfer description.

  • JTAG master module

    Allows control of the IEEE1149.1 JTAG TAP from UltraSoC messages instead of from chip pins. Can be used to access and control IP components that are limited to access over JTAG, and enable power-on-self-test and other scan-based debug activities

  • System memory buffer module

    Allows storage of debug messages in system memory using a bus interface like AXI.

  • Utility (GPIO) module

    Connectivity module allowing the conversion of events into I/O signals that can be used internally or wired to chip I/O pins to enable interaction with external tools such as oscilloscopes.

  • Trace communicator

    Drives UltraSoC messages into an alternative debug system s trace funnel for export to an external parallel port or high-speed serial interface. Versions are available for ARM s CoreSight (ATB Communicator), MIPS s PDTrace (MPDT Communicator), external parallel port interfaces, in-house trace solutions or AXI4 streaming interface.

  • Internal bus communicator

    Enables software running inside the chip to actively drive UltraSoC through a bus slave as though it were the host debugger, allowing the software to monitor itself during pre-deployment testing and post-deployment / early-adoption.

  • Message engine and message hub modules

    Universal blocks that can be connected hierarchically to form an on-chip debug fabric with a tree topology based on the UltraSoC message interface. Prioritize and route messages and real-time events between their interfaces and provide optional features such as buffering and shared security services.

  • Message network

    A non-blocking message-based interconnect for joining the debug hierarchies of multiple sub-systems into a large-scale system in a variety of topologies (e.g. a ring). This is especially useful in larger SoCs, and with sub-systems in different power domains or clock domains.

  • Message slice module

    Used to break the combinatorial path between one message interface and another by registering the signals in each direction. Aids timing closure by breaking a long link into two shorter links.

  • JTAG communicator

    Provides debugger connectivity to UltraSoC via an IEEE 1149.1 scan-test interface.

  • USB communicator

    Connects directly to an on-chip USB PHY to enable interconnection with the debug host at a much higher speed than would be possible using a traditional serial interface. Autonomous, requiring no host processor or software intervention. Optionally there is a hub component enabling the system to simultaneously use the same physical interface without processor intervention.

Features

  • Bus performance monitor with trace

    Passively monitors a master or slave interface on a bus, point-to-point fabric or on-chip network such as AXI, AXI4, or OCP 2.1. Also supports coherent protocols such as ACE and OCP 3.0 and packet-based interfaces like AMBA 5 CHI, and is easily adaptable to proprietary interconnects. Sophisticated filtering allows monitoring of end-to-end metrics such as bus cycles, transactions, duration, latency and hesitancy. Also allows debugging of bus hangs and error transactions.

  • Status monitor

    A parametrized module that enables a wide variety of monitoring functions, including event and message generation, counting, accumulating and data trace, in response to system states or other conditions or sequences.

  • Processor advanced modules

    Interfaces to processors and their proprietary debug resources (e.g. CoreSight). There are variants for ARM cores (including Cortex-A, -R, and -M), Cadence (Tensilica XTensa) and MIPS processors, allowing access to standard features such as run-control, breakpoint and watch-point resources, cross-triggering, and performance monitoring (eg cache hits). The module can be collocated and directly coupled with a processor or group to offload debug communication from the proprietary debug-interconnect and allow a truly scalable debug solution. Alternatively it can be indirectly coupled using an existing infrastructure such as ARM s CoreSight.

  • Software instrumentation module

    Allows data delivered over a bus fabric such as AXI to be automatically converted to UltraDebug instrumentation trace messages and transferred to the host debugger. The typical use case is to collect trace data from user APIs such as those from an OS. Supports time-stamping and cross-triggering with other modules.

  • Virtual console module

    A peripheral interface that enables the system software to communicate bi-directionally with the debug host (generally running third-party development tools) via UltraSoC.

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