Intel® Core™ Ultra Series 3 Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872351 | 04/14/2026 | 001 | Public |
Inter-Channel Decode Parameters (MAD_INTER_CHANNEL_0_0_0_MCHBAR) – Offset d800
This register holds parameters used by the channel decode stage.
It defines virtual channel L mapping, as well as channel S size.
Also defined is the DDR type installed in the system (what DDR/LPDDR type is used).
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:24 | 0h | RO | Reserved |
| 23:16 | 0h | RO/V | Channel 1 Size (CH_1_SIZE) Channel 1 size in 0.5 GBs. Updated by the HW based on MAD_INTRA_CHANNEL_0_0_0_MCHBAR[1] configuration. |
| 15:8 | 0h | RO/V | Channel 0 Size (CH_0_SIZE) Channel 0 size in 0.5 GBs. Updated by the HW based on MAD_INTRA_CHANNEL_0_0_0_MCHBAR[0] configuration. |
| 7:3 | 0h | RO | Reserved |
| 2 | 0h | RW | Enable ECC logics (ECC) ECC configuration of the system: |
| 1:0 | 0h | RW | DDR TYPE (DDR_TYPE) DDR_TYPE - defines the DDR type in system: |