dramtiming3
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 | 0xFFC2500C |
Offset: 0x500C
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 |
tccd RW 0x0 |
tmrd RW 0x0 |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
tmrd RW 0x0 |
trc RW 0x0 |
tras RW 0x0 |
trtp RW 0x0 |
dramtiming3 Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
22:19 | tccd | The CAS to CAS delay time. |
RW | 0x0 |
18:15 | tmrd | Mode register timing parameter. |
RW | 0x0 |
14:9 | trc | The activate to activate timing parameter. |
RW | 0x0 |
8:4 | tras | The activate to precharge timing parameter. |
RW | 0x0 |
3:0 | trtp | The read to precharge timing parameter. |
RW | 0x0 |