Intel® Core™ Ultra 200H and 200U Series Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 844345 | 01/29/2025 | 001 | Public |
WR to RD Timings (TC_WRRD_0_0_0_MCHBAR) – Offset e014
DDR timing constraints related to timing between write and read transactions
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:25 | 4h | RW | Write to Read Different DIMM Delay - tWRRD_dd (tWRRD_dd) Minimum delay from WR to RD to the other DIMM in tCK (WCK for LPDDR5) cycles. |
| 24:18 | 4h | RW | Write to Read Different Rank Delay - tWRRD_dr (tWRRD_dr) Minimum delay from WR to RD to the other rank in the same DIMM in tCK (WCK for LPDDR5) cycles. |
| 17:9 | 4h | RW | Write to Read Different Bank Group Delay - tWRRD_dg (tWRRD_dg) LPDDR4/LPDDR5: Minimum delay from WR to RD to different banks in tCK (WCK for LPDDR5) cycles. |
| 8:0 | 4h | RW | Write to Read Same Bank Group Delay - tWRRD_sg (tWRRD_sg) LPDDR4/LPDDR5: Minimum delay from WR to RD to the same bank in tCK (WCK for LPDDR5) cycles. |