The multiprocessor system-on-chip (MPSoC) uses multiple CPUs along with other hardware subsystems to implement a system. A wide range of MPSoC. Modern system-on-chip (SoC) design shows a clear trend toward integration of multiple processor cores on a single chip. Designing a multiprocessor. A multiprocessor system-on-chip is a system-on-a-chip (SoC) which includes multiple microprocessors. As such, it is a multi-core System-on-Chip. MPSoCs.


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Even more important, automating the creation multiprocessor systems-on-chips these low-level functions on both the hardware and the software sides allows valuable engineering resources to concentrate on adding value to the product. It is a bus-based system consisting of one NEC V CPU and one hardware unit user-defined logic connected to the bus using a multiprocessor systems-on-chips bus interface.


Bridges can be used in order to connect different processing units of this kind. CPU, hardware unit and bridges can all act as masters on the bus and hence an arbitration unit is required.

The architecture of our bridge is shown multiprocessor systems-on-chips Figure 3. It is a bidirectional bridge composed of two identical unidirectional bridges used for implementing both upstream and downstream connections.

Upstream connections are the ones originated on the primary bus Bus Up and directed toward the multiprocessor systems-on-chips bus Bus Down. Downstream multiprocessor systems-on-chips are the ones going in the opposite direction.

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The architecture of our bridge. On the other side, ConversionTableDU multiprocessor systems-on-chips the set of addresses that have to be captured on the secondary bus and propagated to the primary bus.

Interface Synthesis in Multiprocessing Systems-On-Chips

These tables are automatically configured by our interface synthesis tool as it will be shown later. We have used for multiprocessor systems-on-chips blocks the finite state machines shown in Multiprocessor systems-on-chips 4, but different behaviors could be implemented.


multiprocessor systems-on-chips Finite state machines for the bridge. In multiprocessor systems-on-chips, possible masters are the CPU, the bridge, and all the hardware tasks.

Before a bus master can execute a transaction, it must request and be granted the use of the bus. When a master wishes to use the bus, it asserts the REQ signal.

Sometime later multiprocessor systems-on-chips arbiter will assert the corresponding GNT signal indicating that this master is next in line to use the bus. Several bus arbitration policies can be used e.

Bridges are used in order to route a connection from one bus to another. Bu83, in this example, does not have any processor connected to it. Different address ranges, configurable by the user, are multiprocessor systems-on-chips to every bus for memory-mapped communication.

In our mapping strategy, a multi-processor architecture is seen as a collection of multiple single-processor units. Mapping is initially performed separately multiprocessor systems-on-chips each processing unit using the technique presented in [1].

Connections across different processing units are then routed through the bridges and address conversion tables hashes are generated for all the bridges. The basic idea is that once the functionality of the system to be implemented has been partitioned distributed among the different hardware and software processing units available on this architectural template, a certain number of connections between different tasks will be created.

A generic connection is characterized as shown in Figure 7. Connections between multiprocessor systems-on-chips mapped on the same single-processor unit will not require any bridge, while connections between tasks mapped on different single-processor units will utilize a certain number of bridges.

Interface Synthesis in Multiprocessing Systems-On-Chips

For each connection, we store in an internal database the sequence of bridges involved in its implementation. The way in which automatic mapping gets implemented in our methodology is by configuring each bridge with a specific address conversion table.

The basic strategy is the following: Single processor mapping has initially generated an address source for the signal on the multiprocessor systems-on-chips bus.

If the signal is directed toward a different processing unit busan address dest has also been generated for the same signal on the destination bus. The conversion table of the first bridge encountered on the communication path multiprocessor systems-on-chips updated in order to convert the source address in its corresponding destination address: The inputs to the algorithm are: Pseudocode of the mapping algorithm.

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