摘要:
A method for effecting an in-band reset of the physical layers of two agents interconnected through a link-based interconnection scheme. In accordance with one embodiment of the invention, a first of the two agents ceases its forwarded clock to initiate the in-band reset. Upon realization of the cessation, a second agent ceases its forwarded clock and proceeds to a reset state. The first agent then proceeds to a reset state. Subsequently, after waiting a specified period of time, both agents proceed with a re-initialization of the physical layer. In accordance with one embodiment of the invention, the re-initialization of the physical layer is effected without impacting other layers of the interconnection hierarchy.
摘要:
A method for setting multiple chip parameters using one IC terminal is described. The chip comprises a first circuit coupled to the pin for setting a first parameter. A second circuit coupled to the pin sets a second parameter. In addition, a third circuit coupled to the pin sets a third parameter of the chip.
摘要:
A multi layer printed circuit board with a 3-load topology is disclosed. First, second, and third integrated circuit (IC) printed wiring board packages having first, second, and third sets of terminals respectively are mounted on opposite sides of the board so that the second set of terminals are directly opposite the third set of terminals. Each package contains an IC die coupled to the respective set of terminals. The IC die in the first package is substantially identical to the one contained in the second package, and different than the one contained in the third package. For improved fanout of the metal lines that interconnect the first package to the second and third packages, each of the first, second, and third sets of terminals in the packages is arranged in substantially a U-shape. Each set of terminals has the same set of signal assignments of a parallel bus implemented by metal lines in the board. The 3-load topology is particularly useful for personal computer motherboard units having twin processors and a bridge chip set, yielding a motherboard having significantly lower number of metal layers, a faster bus and significantly improved noise margin, all with high density IC packages on a wide parallel bus.
摘要:
According to an embodiment of the invention a circuit that is to be coupled to a reference voltage line. The circuit includes a noise coupling circuit that is to couple noise from the circuit to a reference voltage line based upon whether a driver is driving a data line.
摘要:
A topology for mounting processors on opposite sides of a printed circuit board (PCB) orients rows of processor connection pins parallel to the bus orientation within the PCB and defines a relative 180 degree orientation between the opposing processors.
摘要:
A method of reducing random, processing-induced timing variations in a field effect transistor device includes providing a semiconductor substrate having an active area, and forming a transistor having a gate over a portion of the active area, the gate having a first leg and a second leg. In a further aspect, a method of improving the timing skew of critically-matched circuits is presented. In a still further aspect of the invention, a field effect transistor and an integrated circuit device that can be used to improve timing robustness in the presence of random fabrication- or process-induced variations are presented.
摘要:
Systems and methods of managing a link provide for receiving a remote width capability during a link initialization, the remote width capability corresponding to a remote port. A link between a local port and the remote port is operated at a plurality of link widths in accordance with the remote width capability.
摘要:
A link latency management for a high-speed point-to-point network (pTp) is described The link latency management facilitates calculating latency of a serial interface by tracking a round trip delay of a header that contains latency information. Therefore, the link latency management facilitates testers, logic analyzers, or test devices to accurately measure link latency for a point-to-point architecture utilizing a serial interface.
摘要:
Systems and methods of managing a link provide for receiving a remote width capability during a link initialization, the remote width capability corresponding to a remote port. A link between a local port and the remote port is operated at a plurality of link widths in accordance with the remote width capability.
摘要:
Embodiments of the invention provide an algorithm for dividing a link into one or more reduced-width links. For one embodiment of the invention, a multiplexing scheme is employed to effect a bit transmission order required by a particular cyclic redundancy check. The multiplexed output bits are then swizzled on-chip to reduce on-board routing congestion.