摘要:
A system and method for configuring expansion bus links to generate a double-bandwidth link slot are disclosed. An information handling system includes a central processing unit (CPU) and memory operable to store program instructions executable by the CPU. A chip set operably couples the CPU and the memory to a first slot and a second slot. The chipset includes a root port that generates a first link coupled to the first slot and a second link coupled to the second slot. An adapter card is inserted into either of the first or second slots such that the adapter card routes either the first or second link to the slot not populated by the adapter card.
摘要:
A time division multiplexed communication bus is disclosed that provides a low latency, low pin count solution for communications among information handling systems. The time division multiplexed serial bus is advantageous in providing communications among modular computing systems, passthrough modules and chassis management controllers, as part of a modular computing system chassis.
摘要:
An information handling system is set forth which includes a fully connected 4S topology that can also be populated with two processors and two link modules (e.g., two passive “slugs”) to implement a fully connected 2S topology. More specifically, the link module is a printed circuit board that implements a loopback connection between certain links of the architecture. In certain embodiment, the link module includes no electrical components. The link module merely includes a set of electrical connections (e.g., copper traces) connecting pads (e.g., gold plated pads) on a thick printed circuit board (PCB) dielectric material that is shaped to fit the processor socket. The link module is used to carry user data when the information handling system is configured in a 2S topology. The link module includes proper lane assignment that allows the module to be passive without performance reduction.
摘要:
A test coupon on a printed circuit board used for verifying that vias in the printed circuit board are back drilled to a proper predetermined depth. Use of the coupon involves correlating a via on the board to a via of a test coupon drilling the board via and the test coupon via to substantially the same depth, where the depth is predetermined based on the board via. Then measuring the impedance of the test coupon to reveal the actual depth of the back drilling of the coupon via. Knowing the actual back drill depth of the coupon via is used to verify the back drill depth of the board via.
摘要:
An information handling system is set forth which includes a fully connected 4S topology that can also be populated with two processors and two link modules (e.g., two passive “slugs”) to implement a fully connected 2S topology. More specifically, the link module is a printed circuit board that implements a loopback connection between certain links of the architecture. In certain embodiment, the link module includes no electrical components. The link module merely includes a set of electrical connections (e.g., copper traces) connecting pads (e.g., gold plated pads) on a thick printed circuit board (PCB) dielectric material that is shaped to fit the processor socket. The link module is used to carry user data when the information handling system is configured in a 2S topology. The link module includes proper lane assignment that allows the module to be passive without performance reduction.
摘要:
An information handling system includes a printed circuit board (PCB) including a signal path with a trace coupled to a source, another trace coupled to a load, a tuned stub, and a via connecting the traces and the tuned stub. A method includes providing a signal path on a PCB with a trace coupled to a source, a trace coupled to a load, a tuned stub, and a via connecting the traces and the tuned stub, driving a signal on the signal path, and adjusting the tuned stub length so that the signal is unchanged between the source and the load. A PCB includes a signal path between a source and a load with two traces and a via, and a tuned path between the source and the load with the two traces, another trace, and the via, the length of the tuned path being a half wavelength stub.
摘要:
A time division multiplexed communication bus is disclosed that provides a low latency, low pin count solution for communications among information handling systems. The time division multiplexed serial bus is advantageous in providing communications among modular computing systems, passthrough modules and chassis management controllers, as part of a modular computing system chassis.
摘要:
An interposer module may be used between a unified architecture blade compute module and a mid-plane of a present technology blade compute module system. The interposer module may contain input-output controllers for desired input-output fabrics. The mid-plane couples these input-output controllers to associated input-output fabric switches. The same unified architecture blade compute module may also be used without the interposer module in a new technology blade compute module system having multi-context fabric input-output controllers. The multi-context fabric input-output controllers may be coupled to the unified architecture blade compute modules of the information handling system by a switch such as a PCI Express (PCIe) switch.
摘要:
A test coupon on a printed circuit board used for verifying that vias in the printed circuit board are back drilled to a proper predetermined depth. Use of the coupon involves correlating a via on the board to a via of a test coupon drilling the board via and the test coupon via to substantially the same depth, where the depth is predetermined based on the board via. Then measuring the impedance of the test coupon to reveal the actual depth of the back drilling of the coupon via. Knowing the actual back drill depth of the coupon via is used to verify the back drill depth of the board via.
摘要:
An information handling system including a system fan control for maintaining operating temperatures of electronics within the information handling system is disclosed. The information handling system can include a power trace provided in association with a power circuit that can power electronics within the information handling system. The power trace can include a reduced trace width region that may be operable to provide a temperature differential in response to a current change within the reduced trace width region. A thermistor may be provided in close proximity to the reduced trace width region and can be operable to detect the temperature differential provided in response to the current change. The thermistor may provide an input to a fan controller that may be operable to alter a fan speed to maintain an operating temperature of the electronics that may be coupled to the power trace.