app_zq_req - 1.0 English

Versal Adaptive SoC Soft DDR4 SDRAM Memory Controller LogiCORE IP Product Guide (PG353)

Document ID
PG353
Release Date
2023-10-18
Version
1.0 English

When asserted, this active-High input requests that the Memory Controller send a ZQ calibration command to the DRAM. It must be pulsed for a single cycle to make the request and then deasserted at least until the app_zq_ack signal is asserted to acknowledge the request and indicate that it has been sent.