Abstract: A memory device comprising a programmable command-and-address (CA) interface and/or a programmable data interface is described. In an operational mode, two or more CA interfaces may be active. In another operational mode, at least one, but not all, CA interfaces may be active. In an operational mode, all of the data interfaces may be active. In another operational mode, at least one, but not all, data interfaces may be active. The memory device can include circuitry to select: an operational mode; a sub-mode within an operational mode; one or more CA interfaces as the active CA interface(s); a main CA interface from multiple active CA interfaces; and/or one or more data interfaces as the active data interfaces. The circuitry may perform these selection(s) based on one or more bits in one or more registers and/or one or more signals received on one or more pins.

Abstract: A keying system for an electrical connector (10, 16) is disclosed. Keying members (160, 234) are provided in mating pairs so that one is assembled to the cable connector (10) and the other is assembled to the mating panel connector (16). Each of the keying members (160,234) is assembled by inserting it into the open end of the connector so that lugs (186,236) on the dielectric insert (44,218) within the connector enter camming slots (178) in the keying member (160,234) which is then twisted to lock it in place. The keying members can be easily and conveniently assembled and disassembled in the field by the end user.