flash_burst_length
Module Instance | Base Address | Register Address |
---|---|---|
sdm_i_nand_dma | 0xFFA10700 | 0xFFA10770 |
Size: 32
Offset: 0x70
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 |
polling_sync_counter_value RW 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
polling_sync_counter_value RW 0x0 |
Reserved |
continous_burst RW 0x0 |
Reserved |
value RW 0x1 |
flash_burst_length Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
31:8 | polling_sync_counter_value |
Number of cycles CMDDMA channel has to wait before polling the SYNC Pointer again. If this counter value is 0, no polling is done. |
RW | 0x0 |
4 | continous_burst |
When this bit is set, the Data DMA will burst the entire page from/to the flash device. Please make sure that the host system can provide/sink data at a fast pace to avoid unnecessary pausing of data on the device interface. |
RW | 0x0 |
1:0 | value |
Sets the burst used by data dma for transferring data to/from flash device. This burst length is different and is larger than the burst length on the host bus so that larger amount of data can be transferred to/from device, descreasing controller data transfer overhead in the process. 00 - 64 bytes, 01 - 128 bytes, 10 - 256 bytes, 11 - 512 bytes. The host burst size multiplied by the number of outstanding requests on the host side should be greater than equal to this value. If not, the device side burst length will be equal to host side burst length. |
RW | 0x1 |