Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
SSP x Control 1 (I2S2_SSC1) – Offset 2a104
This register controls various functions within the SSP Interface. All bits must be set to preferred value before enabling the SSP Interface.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31 | 1h | RW | Reserved (Preserved) (RSVD31) SW must preserve the original value when writing. |
| 31 | 1h | RW | TXD Tri-state Enable on Last Phase (TTELP) 0: TXD line will be tri-stated on same clock edge as TXD is to be flopped. |
| 30 | 0h | RW | TXD Tri-state Enable (TTE) 0: TXD line will not be tri-stated. |
| 29 | 0h | RW | Enable Bit Count Error Interrupt (EBCEI) 0: Interrupt due to a bit count error is disabled. |
| 28 | 0h | RW | Device Clock Free Running (SCFR) 0: Clock input to SCLK is continuously running. |
| 27:26 | 0h | RW | Reserved (Preserved) (RSVD27) SW must preserve the original value when writing. |
| 25 | 0h | RW | SSP Serial Bit Rate Clock Direction (SCLKDIR) 0: Host mode, SSP drives SCLK. |
| 24 | 0h | RW | SSP Frame Direction (SFRMDIR) 0: Host mode, SSP drives SFRM. |
| 23 | 0h | RW | Reserved (Preserved) (RSVD23) SW must preserve the original value when writing. |
| 23 | 0h | RW | Received Without Transmit (RWOT) 0: Transmit / Receive mode. |
| 22 | 0h | RW | Trailing Byte (TRAIL) 0: Processor based, trailing bytes are handled by processor. |
| 21:20 | 0h | RW | Reserved (Preserved) (RSVD21) SW must preserve the original value when writing. |
| 19 | 0h | RW | Receiver Time-out Interrupt Enable (TINTE) 0: Receiver Time-out interrupts are disabled. |
| 18:17 | 0h | RW | Reserved (Preserved) (RSVD18) SW must preserve the original value when writing. |
| 16 | 0h | RW | Invert Frame Signal (IFS) 0: Frame polarity is determined by SSP format and PSP polarity. |
| 15:3 | 0h | RW | Reserved (Preserved) (RSVD15) SW must preserve the original value when writing. |
| 2 | 0h | RW | Loopback Mode (LBM) 0: Normal serial port operation enable. |
| 1 | 0h | RW | Transmit FIFO Interrupt Enable (TIE) 0: Transmit FIFO level interrupt is disabled. |
| 0 | 0h | RW | Receive FIFO Interrupt Enable (RIE) 0: Receive FIFO level interrupt is disabled. |