Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
SSP x Multi Input DMA y Data (I2S1_SSMID5D) – Offset 291b4
This register is a single address location that read data transfers can access. It is temporary storage for data coming in through the receive 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 up to accommodate the new word (unless it is an attempted read to empty receive FIFO).
Status bits (such as SSxMIDyCS.RFL and SSxMIDyCS.RNE) show users whether the FIFO is full, above/below a programmable FIFO trigger threshold, or empty. The register can be unloaded (read) by the system processor, anytime it rises above its threshold level when using programmed I/O. Received data of less than 32-bits is automatically right-justified in the receive FIFO.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:0 | 0h | RO/V | FIFO Data (DATA) Data word to be read from receive FIFO. |