Intel® Core™ Ultra Processors for H-series and U-series Platforms SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795260 | 12/14/2023 | 001 | Public |
REG SGR1 (SGR1) – Offset 8a0
The Source Gather register contains two fields: Source gather count field (SGRx.SGC). Specifies the number of
contiguous source transfers of CTLx.SRC_TR_WIDTH between successive gather intervals. This is defined as a gather
boundary. Source gather interval field (SGRx.SGI). Specifies the source address increment/decrement in multiples of
CTLx.SRC_TR_WIDTH on a gather boundary when gather mode is enabled for the source transfer. The CTLx.SINC
field controls whether the address increments or decrements. When the CTLx.SINC field indicates a fixed-address
control, then the address remains constant throughout the transfer and the SGRx register is ignored.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:20 | 0h | RW | SGC (SGC) Source gather count. Source contiguous transfer count between successive gather |
| 19:0 | 0h | RW | SGI (SGI) Source gather interval. |