Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
SSP x Multi Output DMA y Data (I2S1_SSMOD2D) – Offset 29204
This register is a single address location that write data transfers can access. It is temporary storage for data on its way out through the transmit FIFO.
As the system accesses the register, FIFO control logic transfers data automatically between registers and FIFOs as fast as the system moves it. Data in the FIFO shifts down to accommodate the new word (unless it is an attempted write to full transmit FIFO).
Status bits (such as SSxMODyCS.TFL and SSxMODyCS.TNF) show users whether the FIFO is full, above/below a programmable FIFO trigger threshold, or empty. The register can be loaded (written) by the system processor, anytime it falls below its threshold level when using programmed I/O. When a data size of less than 32-bits is selected, users should not left-justify data written to the transmit FIFO. Transmit logic left-justifies the data and ignores any unused bits.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:0 | 0h | WO | FIFO Data (DATA) Data word to be written to transmit FIFO. |