Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
Microphone Control Register (PDMCTRL1_MIC_CONTROL) – Offset 1210c
Write 0000_C001 to operate in stereo mode when all coefficients are written.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:16 | 0h | RO | Reserved Bits (RSVD0) This is a Reserved Register |
| 15:8 | 6h | RW | PDM CLKDIV (PDMCLKDIV) Clock divider used for producing the microphone clock from audio IO clock with approximately 50% duty cycle |
| 7:4 | 0h | RW | PDM SKEW (PDMS) Selects the delay of the clocks output for microphones to align the sampling point of the data and clock edge. |
| 3 | 0h | RW | CLK EDGE (CLKE) Inverts the clock edge that will be used to sample microphone data stream. |
| 2 | 0h | RW | Follower Mode (FOLLOWMODE) Indicates the PDM DMIC clock for the decimator will be sourced from external component instead of using the PDM DMIC clock generator output. |
| 1 | 0h | RW | PDM_EN B (PDMEB) Enable clock on microphone B (left). |
| 0 | 0h | RW | PDM_EN A (PDMEA) Enable clock on microphone A (left). |