dramtiming2
This register implements JEDEC standardized timing parameters. It should be programmed in clock cycles, for the value specified by the memory vendor.
| Module Instance | Base Address | Register Address |
|---|---|---|
| sdr | 0xFFC20000 | 0xFFC25008 |
Offset: 0x5008
Access: RW
Important: To prevent indeterminate
system behavior, reserved areas of memory must not be accessed by software or
hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
twtr RW 0x0 |
twr RW 0x0 |
trp RW 0x0 |
trcd RW 0x0 |
|||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
trcd RW 0x0 |
trefi RW 0x0 |
||||||||||||||
dramtiming2 Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 28:25 | twtr | The write to read timing parameter. |
RW | 0x0 |
| 24:21 | twr | The write recovery timing. |
RW | 0x0 |
| 20:17 | trp | The precharge to activate timing parameter. |
RW | 0x0 |
| 16:13 | trcd | The activate to read/write timing parameter. |
RW | 0x0 |
| 12:0 | trefi | The refresh interval timing parameter. |
RW | 0x0 |