LRDIMM MWD Center Training - 1.0 English

Versal ACAP Programmable Network on Chip and Integrated Memory Controller LogiCORE IP Product Guide (PG313)

Document ID
PG313
Release Date
2022-12-14
Version
1.0 English
This training center aligns Write MDQS in the Write MDQ window at the DRAM. In this training mode, the controller pre-programs the data buffer MPR registers with the expected pattern, issues write commands to load the data into memory, and issues reads to the memory. The data buffer compares the read data with the expected data and feeds back the result on the DQ bus. Calibration finds the left and right edges of the MDQ valid window and centers MDQS in it.
Table 1. MWD Center Training Register
Register Name Quantity Description
Fx_DB_MWD_CENTER Rank Data Buffer MWD Taps [4:0]