Intel® Core™ Ultra Processors for H-series and U-series Platforms SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795260 | 12/14/2023 | 001 | Public |
Active LTR Value (ACTIVELTR_VALUE) – Offset 210
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:16 | 0h | RO | Reserved |
| 15 | 0h | RW | Snoop Requirement (snoop_requirment) If the Requirement (bit 15) is clear, that indicates that the device has no LTR |
| 14:13 | 0h | NA | Reserved (reserved_low)
|
| 12:10 | 2h | RW | SW LTR Snoop Scale (i2c_sw_ltr_snoop_scale_reg_12_10) Support for codes 010 (1us) or 011 (32us) for Snoop Latency Scale(1us -> 32ms total span) only. Writes to this CSR which dont match those values will be dropped completely, next read will return previous value. |
| 9:0 | 0h | RW | snoop_value (snoop_value) 10-bit latency value |