Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
ID | Date | Version | Classification |
---|---|---|---|
834576 | 10/10/2024 | 001 | Public |
THC Read PRD Control for the 1st RXDMA (THC_M_PRT_RPRD_CNTRL_1) – Offset 1108
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:20 | 0h | RO | Reserved (RSVD_31_20) Reserved. |
19:16 | 0h | RO | Reserved |
15:8 | 0h | RW | PRD Table Entry Count for the 1st RX DMA (PTEC) The number of PRD entries in each of the PRD tables held in the circular buffer. The PRD Entry Count must be large enough to contain the maximum raw data buffer size for any touch device. A fragmented data buffer could require a PRD entry for every 4KB of host memory allocated. In this case, for a 1MB raw data buffer, 128 PRD entries would be required. |
7 | 0h | RO | Reserved (RSVD_7) Reserved. |
6:0 | 0h | RW | PRD CB Depth for the 1st RX DMA (PCD) This field indicates the number of PRD tables contained in the PRD address space. |