dma_config
Consist of control bit and status information.
Module Instance | Base Address | Register Address |
---|---|---|
i_fpga_mgr_fpgamgrregs | 0xFFD03000 | 0xFFD03090 |
Offset: 0x90
Access: RW
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 |
Reserved |
clearFifo 0x0 |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
dmareq_enable 0x0 |
dmareq_level 0x0 |
dma_config Fields
Bit | Name | Description | Access | Reset | ||||||
---|---|---|---|---|---|---|---|---|---|---|
16 | clearFifo | A write 1 to this bit field will empty the TxFifo. A read will always return 0. |
RW | 0x0 | ||||||
8 | dmareq_enable | Writing 1 will enable DMA request handshake from FPGA manager. Writing 0 will disable DMA request handshake from FPGA manager.
|
RW | 0x0 | ||||||
7:0 | dmareq_level | DMA request threshold level |
RW | 0x0 |