Intel® Core™ Ultra 200H and 200U Series Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 844345 | 01/29/2025 | 001 | Public |
RD to RD Timings (TC_RDRD_0_0_0_MCHBAR) – Offset e00c
DDR timing constraints related to timing between read and read transactions
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:24 | 4h | RW | Read to Read Different DIMM Delay - tRDRD_dd (tRDRD_dd) Minimum delay from RD to RD to the other DIMM in tCK (WCK for LPDDR5) cycles. |
| 23:16 | 4h | RW | Read to Read Different Rank Delay - tRDRD_dr (tRDRD_dr) Minimum delay from RD to RD to the other rank in the same DIMM in tCK (WCK for LPDDR5) cycles. |
| 15 | 0h | RO | Reserved |
| 14:8 | 4h | RW | Read to Read Different Bank Group Delay - tRDRD_dg (tRDRD_dg) LPDDR4/LPDDR5: Minimum delay from RD to RD to different banks in tCK (WCK for LPDDR5) cycles. |
| 7 | 0h | RO | Reserved |
| 6:0 | 4h | RW | Read to Read Same Bank Group Delay - tRDRD_sg (tRDRD_sg) LPDDR4/LPDDR5: Minimum delay from RD to RD to the same bank in tCK (WCK for LPDDR5) cycles. |