Memory channel having deskew separate from redrive

摘要

A memory module may have a redrive circuit having a plurality of redrive paths, a memory device, and a deskew circuit. The deskew circuit may be separate from the plurality of redrive paths. The deskew circuit may be coupled between the plurality of redrive paths and the memory device to selectively deskew data received in the redrive circuit.

主权项

1. An integrated circuit to provide a memory buffer to isolate one or more dynamic random access memory devices (DRAM devices) from a differential point-to-point channel, the integrated circuit comprising:
an inbound redrive circuit to receive and redrive signals on an inbound path of the differential point-to-point channel, the inbound redrive circuit including, at least in part, two or more bit-lanes for the inbound path of the differential point-to-point channel; an outbound redrive circuit to receive and redrive signals on an outbound path of the differential point-to-point channel, the outbound redrive circuit including, at least in part, two or more bit-lanes for the outbound path of the differential point-to-point channel; a double data rate (DDR) memory interface to couple the memory buffer with the one or more DRAM devices, the memory interface to receive data from the outbound redrive circuit and to send data to the inbound redrive circuit; and a deskew circuit separate from the outbound redrive circuit and coupled between the outbound redrive circuit and the DDR memory interface, the deskew circuit to deskew data received from the two or more bit-lanes of the outbound path.