Abstract:
Embodiments of the present disclosure are directed toward interconnect routing configurations and associated techniques. In one embodiment, an apparatus includes a substrate, a first routing layer disposed on the substrate and having a first plurality of traces, and a second routing layer disposed directly adjacent to the first routing layer and having a second plurality of traces, wherein a first trace of the first plurality of traces has a width that is greater than a width of a second trace of the second plurality of traces. Other embodiments may be described and/or claimed.
Abstract:
Embodiments of the present disclosure are directed towards techniques and configurations for ground via clustering for crosstalk mitigation in integrated circuit (IC) assemblies. In some embodiments, an IC package assembly may include a first package substrate configured to route input/output (I/O) signals and ground between a die and a second package substrate. The first package substrate may include a plurality of contacts disposed on one side of the first package substrate and at least two ground vias of a same layer of vias, and the at least two ground vias may form a cluster of ground vias electrically coupled with an individual contact. Other embodiments may be described and/or claimed.
Abstract:
Transmission lines with a first dielectric material separating signal traces and a second dielectric material separating the signal traces from a ground plane. In embodiments, mutual capacitance is tuned relative to self-capacitance to reverse polarity of far end crosstalk between a victim and aggressor channel relative to that induced by other interconnect portions along the length of the channels, such as inductively coupled portions. In embodiments, a transmission line for a single-ended channel includes a material of a higher dielectric constant within the same routing plane as a microstrip or stripline conductor, and a material of a lower dielectric constant between the conductor and the ground plane(s). In embodiments, a transmission line for a differential pair includes a material of a lower dielectric constant within the same routing plane as a microstrip or stripline conductors, and a material of a higher dielectric constant between the conductors and the ground plane(s).
Abstract:
Systems, apparatuses, and methods may include a circuit board having a plated through hole with a via portion and a stub portion and a self-coupled inductor electrically coupled to the via portion of the plated through hole. The self-coupled inductor may include a first inductor mutually coupled to a second inductor in series to reduce a capacitive effect of the stub portion of the plated through hole.
Abstract:
Some embodiments described herein include apparatuses and methods of forming such apparatuses. One such embodiment may include a routing arrangement having pads to be coupled to a semiconductor die, with a first trace coupled to a first pad among the pads, and a second trace coupled to a second pad among the pads. The first and second traces may have different thicknesses. Other embodiments including additional apparatuses and methods are described.