dmagrp_current_host_transmit_descriptor
<b> Register 18 (Current Host Transmit Descriptor Register) </b>
The Current Host Transmit Descriptor register points to the start address of the current Transmit Descriptor read by the DMA.
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_emac_emac0 | 0xFF800000 | 0xFF801048 |
| i_emac_emac1 | 0xFF802000 | 0xFF803048 |
| i_emac_emac2 | 0xFF804000 | 0xFF805048 |
Size: 32
Offset: 0x1048
Access: RO
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
|
curtdesaptr RO 0x0 |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|
curtdesaptr RO 0x0 |
|||||||||||||||
dmagrp_current_host_transmit_descriptor Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 31:0 | curtdesaptr |
Host Transmit Descriptor Address Pointer Cleared on Reset. Pointer updated by the DMA during operation. |
RO | 0x0 |