Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
REG IC_FS_SCL_HCNT (IC_FS_SCL_HCNT) – Offset 1c
This register can be written only when the I2C interface is disabled, which corresponds to the IC_ENABLE register being set to 0. Writes at other times have no effect.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:16 | 0h | RO | RSVD_IC_FS_SCL_HCNT (RSVD_IC_FS_SCL_HCNT) IC_FS_SCL_HCNT Reserved bits - Read Only |
| 15:0 | 4bh | RW | IC_FS_SCL_HCNT (IC_FS_SCL_HCNT) This register must be set before any I2C bus transaction can take place to ensure proper I/O timing. This register sets the SCL clock high-period count for fast mode or fast mode plus. |