Abstract:
A system for mitigating power supply and power distribution system noise response by throttling execution units based upon voltage sensing in a circuit is provided. A sensing unit senses the voltage of a circuit. The sensing unit determines if the execution of another execution unit will cause the circuit voltage to drop below a threshold level. In response to a determination that the execution of another execution unit will cause the circuit voltage to drop below the threshold level, the execution unit is throttled.
Abstract:
Aspects for routing in multilayer ceramic substrates that reduces via depth and avoids via bulge are described. The aspects include providing a multilayer ceramic substrate with at least two redistribution layers. Vias for each of a plurality of signal lines are jogged on at least a second redistribution layer of the at least two redistribution layers. Further, the aspects include providing the second redistribution layer no more than seven layers deep in the multilayer ceramic substrate.
Abstract:
A system for minimizing the length of the longest diagonal interconnection. A multiple chip module may comprise a first chip connected to a second chip located diagonally to the first chip. The first and second chip are interconnected by one or more interconnections commonly referred to as diagonal interconnections. Since the one or more diagonal interconnections between the first chip and the second chip are interconnected between a set of pins on each chip that form a triangular pattern, the longest diagonal interconnection is substantially the same length as the length of the longest orthogonal interconnection. Furthermore, since the one or more diagonal interconnections between the first chip and the second chip are interconnected between a set of pins on each chip that form a triangular pattern, the longest diagonal interconnection is substantially the same length as the length of the second longest diagonal interconnection.
Abstract:
Aspects for routing in multilayer ceramic substrates that reduces via depth and avoids via bulge are described. The aspects include providing a multilayer ceramic substrate with at least two redistribution layers. Vias for each of a plurality of signal lines are jogged on at least a second redistribution layer of the at least two redistribution layers. Further, the aspects include providing the second redistribution layer no more than seven layers deep in the multilayer ceramic substrate.
Abstract:
Manufacturing circuits with reference plane voids over vias with a strip segment interconnect permits routing critical signal paths over vias, while increasing via insertion capacitance only slightly. The transmission line reference plane defines voids above (or below) signal-bearing plated-through holes (PTHs) that pass through a rigid substrate core, so that the signals are not degraded by an impedance mismatch that would otherwise be caused by shunt capacitance from the top (or bottom) of the signal-bearing PTHs to the transmission line reference plane. In order to provide increased routing density, signal paths are routed over the voids, but disruption of the signal paths by the voids is prevented by including a conductive strip through the voids that reduces the coupling to the signal-bearing PTHs and maintains the impedance of the signal path conductor.
Abstract:
For testing whether an optical fiber is properly connected to a device, a beam of light is output to the optical fiber. An intensity is detected of light reflected by the device back through the optical fiber in response to the beam of light. In response to the detected intensity, a determination is made of whether the optical fiber is properly connected to the device.
Abstract:
A function of an integrated circuit is selectively disabled by mechanical intervention at a module that contains the integrated circuit, such as drilling a hole through the module, cutting a slot in the module or burning a hole with a laser through the laser. Mechanical destruction of the module at a predetermined spot disrupts a function enable signal that is otherwise provide through wires of the module to a connection with the integrated circuit. Without the function enable signal from the module wires to the integrated circuit connector, the function associated with the function enable signal cannot run on the integrated circuit.
Abstract:
An improved system and method for assigning power and ground pins and single ended or differential signal pairs for a ball grid array semiconductor package. In certain embodiments, the system uses a hexagonal pattern where the grid may be represented by a multiplicity of nested hexagonal patterns.
Abstract:
An improved system and method for assigning power and ground pins and single ended or differential signal pairs for a ball grid array semiconductor package. In certain embodiments, the system uses a hexagonal pattern where the grid may be represented by a multiplicity of nested hexagonal patterns.
Abstract:
Mechanisms for interconnecting and distributing signals and power between PCBs are provided. A first PCB having land grid arrays (LGAs) and a first wiring layer designed for interconnect components on the first PCB, and a second wiring layer for connecting the components to a second PCB, are provided. The second PCB has opposed parallel first and second surfaces, the first surface having a LGA. A wiring layer designed to interconnect components on the second PCB, and a layer for interconnecting the components on the second PCB with the components on the first PCB, are provided. A first interposer couples to a LGA of a first surface of the first PCB and connects a component to the first PCB. A second interposer is sandwiched between and couples to a LGA of a second surface of the first PCB and to the LGA of the first surface of the second PCB.