Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
ID | Date | Version | Classification |
---|---|---|---|
834576 | 10/10/2024 | 001 | Public |
Source Gather 0 (SGR0) – Offset 848
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. |