12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
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 |
---|---|---|---|
31:30 | 0x0 | RW | Decoder Extended Bank Hashing (Decoder_EBH) Enable address decoder Extended bank hashing. |
29:28 | 0x1 | RW | BG0 Bit Options (BG0_bit_options) depending on value, BG[0] will be replaced with C[5] or C[6]. |
27:26 | 0x0 | RW | DIMM S Number of Ranks (DSNOR) DIMM S number of ranks |
25:24 | 0x0 | RW | DIMM S Width (DSW) Width of DDR chips |
23 | 0h | RO | Reserved |
22:16 | 0x0 | RW | DIMM S Size (DIMM_S_SIZE) Size of DIMM S in 0.5GB multiples. |
15:13 | 0h | RO | Reserved |
12 | 0x1 | RW | DDR5 DIMM L capacity 8Gb (ddr5_dl_8Gb) 0: DDR5 DIMM L capacity is more than 8Gb |
11 | 0x1 | RW | DDR5 DIMM S capacity 8Gb (ddr5_ds_8Gb) 0: DDR5 DIMM S capacity is more than 8Gb |
10:9 | 0x0 | RW | DIMM L Number of Ranks (DLNOR) 0: 1 Rank |
8:7 | 0x0 | RW | DIMM L Width (DLW) DIMM L width of DDR chips |
6:0 | 0x0 | RW | DIMM L Size (DIMM_L_SIZE) Size of DIMM L in 0.5GB multiples |