4.1.3.2 Memory Region R Start Index Register (0x00000004 + 16×R)
The Memory Region R Start Index Register (Figure 4-9) is written by the host to configure index of the first descriptor in this memory region. For KeyStone I devices, the start index must be in ascending order from one region to the next.
Figure 4-9 Memory Region R Start Index Register (0x00000004 + 16×R)
Legend: R = Read only; R/W = Read/Write; - n = value after reset |
Table 4-11 Memory Region R Start Index Register Field Descriptions
Bit |
Field |
Description |
31-19 |
Reserved |
Reads return 0 and writes have no effect |
18-0 |
START_INDEX |
This field indicates where in linking RAM does the descriptor linking information corresponding to memory region R starts. |