Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
| ID | Date | Version | Classification |
|---|---|---|---|
| 834576 | 10/10/2024 | 001 | Public |
RTC Update In Progress SMI Control (UIPSMI) – Offset 3f04
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:18 | 0h | RO | Reserved (RSVD_UIPSMI_1) Reserved |
| 17 | 0h | RW/1C/V | RTC UIP Low-to-High (UIP_L2H) This sticky status bit is set whenever the RTC Update-In-Progress signal transitions from low to high (i.e., at the start of an update). |
| 16 | 0h | RW/1C/V | RTC UIP High-to-Low (UIP_H2L) This sticky status bit is set whenever the RTC Update-In-Progress signal transitions from high to low (i.e., at the start of an update). |
| 15:2 | 0h | RO | Reserved (RSVD_UIPSMI_0) Reserved |
| 1 | 0h | RW | RTC UIP Low-to-High SMI Enable (UIP_L2H_SMI_en) When this bit is set, a '1' in bit 17 will assert the internal SMI signal to the Power Management SMI logic |
| 0 | 0h | RW | RTC UIP High-to-Low SMI Enable (UIP_H2L_SMI_en) When this biot is set, a '1' in bit 16 will assert the internal SMI signal to the Power Management SMI logic |