摘要:
The configurable processor system includes a processor, an internal system bus, and a programmable logic all interconnected via the internal system bus, on a single integrated circuit.
摘要:
Interface logic is disclosed. The interface logic comprises a first address decoder, a first set of mode logic coupled to the address decoder and a first selector coupled to the first set of mode logic. The interface logic is adaptable to connect the programmable logic to the system interconnect via one of a plurality of access modes supported by the system interconnect.
摘要:
In one embodiment, a method for specifying addressability in a memory-mapped device is disclosed. A data access primitive is used to model addressablity for the memory-mapped device. Addressability comprises an address matching function, a lane matching function and one or more bus connections. A first starting address for the memory-mapped device is specified. A first set of addressing matching function, lane matching function and one or more bus connections for the memory-mapped device is generated using the data access primitive and the first starting address.
摘要:
A bidirectional bus structure includes a first multiplexer path propagating signals in a first direction and a second multiplexer path propagating signals in a second direction. For one embodiment, the bus structure further includes a circuit for selectively combining the signals on the first and second paths and selectively propagating the signal on one of the first and second paths. For another embodiment, the bus structure further includes a logic gate for combining the signals on the first and second paths and a circuit for selectively propagating the signal on one of the first path, the second path, and an output signal of the logic gate. For both embodiments, the present invention allows multiple signals to use the bus without contention, thereby providing an extremely flexible interconnect routing resource. This bidirectional bus can selectively drive signals onto the general interconnect as well as onto a system bus in a configurable system on a chip.
摘要:
A method for asserting an address alignment of an address for a memory-mapped device in a logic design is disclosed. An align primitive comprising an alignment size port, an input address port and an output address port is used. The alignment size port has data indicating a desired address boundary. The input address port is used for an address to be verified against the desired address boundary. The output address port is used to provide an address that is on the desired address boundary. The address to be verified against the desired address boundary is provided at the output address port when that address meets the desired address boundary. Another method for specifying an offset address for a memory-mapped device in a logic design is disclosed. An offset primitive is used to assert an address for the memory-mapped device. The offset primitive comprises an incoming address port, an outgoing address port and an offset value port. The offset value port has a data value indicating a desired address offset. The incoming address port has a base address to calculate an offset address. The outgoing address port has the offset address. The offset value is a multiple of a transaction size at the memory-mapped device.
摘要:
Highly integrated programmable arrays, in which a logic array integrated circuit chip is divided into configurable logic blocks interconnected by configurable interconnect lines, have been programmed by automatic means and methods. The present invention provides for allowing a user to manually specify the partitioning of a logic design, and to allow a user to retain portions of a previously partitioned, placed, and routed design when making revisions. To allow for manual control of partitioning, a library of symbols includes a partitioning symbol that specifies which primitive logic functions can be grouped. The user specifies which ports of primitive logic functions will correspond with ports on the logic block symbol. The present invention also allows for partitioning parts of a design before combining the parts.
摘要:
A processor-implemented method is provided for determining controlling pins of a programmable logic device (PLD) design. A netlist that describes the PLD design and an identification of a tile module are input. Characterization data is input for a sub-module of the tile module that specifies a select input pin controlling a programmable function of the sub-module, which is either a multiplexer or a logic site. Characterization data is input for a configuration memory cell of the tile module that specifies a data output pin of the configuration memory cell. The controlling pin is determined for each select input pin of each instance of the sub-module of the tile module. The controlling pin of a select input pin is the data output pin of an instance of a configuration memory cell of the tile module. A specification is output of the select input pin and corresponding controlling pin.
摘要:
A processor-implemented method is provided for determining programmable connections through a switchbox module of a programmable logic device (PLD) design. A netlist that describes the PLD design and an identification of the switchbox module are input. Characterization data is input for each multiplexer module of the switchbox module. The characterization data specifies input pins and at least one output pin of the multiplexer module. The multiplexer module programmably connects each output pin to one of the input pins. Pins of the switchbox module are determined through which the programmable connections are provided via an instance of a multiplexer module of the switchbox module. Each pair of the pins of the switchbox module is determined that are functionally connected via at least one instance of the at least one multiplexer module, with each pair specifying a programmable connection. A specification of the programmable connections is output.
摘要:
A processor-implemented method is provided for determining first and second indices of cell instances of a configuration memory cell of a tile module of a programmable logic device (PLD) design. A netlist is input that describes the PLD design and includes the cell instances of the configuration memory cell. An identification of the tile module is input. Characterization data is input for each configuration memory cell specifying address and data input pins. Characterization data is input for each configuration control module specifying a first ordered set of address output pins and a second ordered set of data output pins. For each of the cell instances, the first index of an address output pin in the first ordered set and the second index of a data output pin in the second ordered set are determined and a specification is output of the cell instance and the first and second indices.
摘要:
A method and apparatus for determining a width of an external memory is described. The method comprises reading a data from memory, and if the data matches an expected data key, determining the width of the memory.