Intel® Core™ Ultra Processors for H-series and U-series Platforms CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795258 | 12/14/2023 | Public |
A newer version of this document is available. Customers should click here to go to the newest version.
Channel 0 DIMM Characteristics (MAD_DIMM_CH0_0_0_0_MCHBAR) – Offset d80c
This register defines the channel DIMM characteristics - number of DIMMs, number of ranks, size and type.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:27 | 0h | RO | Reserved |
| 26 | 0h | RW | DIMM S Number of Ranks (dsnor) DIMM S number of ranks |
| 25 | 0h | RO | Reserved |
| 24 | 0h | RW | DIMM S Width (dsw) Width of DDR chips |
| 23 | 0h | RO | Reserved |
| 22:16 | 0h | RW | DIMM S Size (dimm_s_size) Size of DIMM S in 0.5GB multiples. |
| 15:10 | 0h | RO | Reserved |
| 9 | 0h | RW | DIMM L Number of Ranks (dlnor) 0: 1 Rank |
| 8 | 0h | RO | Reserved |
| 7 | 0h | RW | DIMM L Width (dlw) DIMM L width of DDR chips |
| 6:0 | 0h | RW | DIMM L Size (dimm_l_size) Size of DIMM L in 0.5GB multiples |