dma
Registers used by the DMA Controller. All fields are reset by a cold or warm reset.
These register bits should be updated during system initialization prior to removing the DMA controller from reset. They may not be changed dynamically during DMA operation.
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_sys_mgr_core | 0xFFD06000 | 0xFFD06020 |
Offset: 0x20
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 |
irq_ns RW 0x0 |
Reserved |
mgr_ns RW 0x0 |
|||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
chansel_2 RW 0x1 |
Reserved |
chansel_1 RW 0x0 |
Reserved |
chansel_0 RW 0x0 |
||||||||||
dma Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 31:24 | irq_ns | Specifies the security state of an event-interrupt resource. If bit index [x] is 0, the DMAC assigns event<x> or irq[x] to the Secure state. If bit index [x] is 1, the DMAC assigns event<x> or irq[x] to the Non-secure state. |
RW | 0x0 | ||||||
| 16 | mgr_ns | Specifies the security state of the DMA manager thread. 0 = assigns DMA manager to the Secure state. 1 = assigns DMA manager to the Non-secure state. Sampled by the DMA controller when it exits from reset. |
RW | 0x0 | ||||||
| 8 | chansel_2 | select between FPGA interface 5 and Security Manager to be mapped to DMA peripheral request index 5
|
RW | 0x1 | ||||||
| 4 | chansel_1 | select between FPGA interface 7 and I2C4_Rx to be mapped to DMA peripheral request index 7
|
RW | 0x0 | ||||||
| 0 | chansel_0 | Select between FPGA interface 6 and I2C4_Tx to be mapped to DMA peripheral request index 6
|
RW | 0x0 |