9.6.2.5
MEMSREFR - SDRAM refresh register
This register defines the refresh period in auto-refresh mode.
The refresh period is the time between two refresh operations, the Memory
Controller carries out automatically on consecutie rows.
The refresh period is defined in number of system clocks periods 1/f
HCLK
.
Access
This register can be read/written in 32-bit units.
Address
<MemC_Base> + 10
H
Initial Value
0000 0410
H
. This register is initialized by any reset.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TREF[15:0]
R/W
Writing to the read-only bits is ignored, reading returns undefined values.
Bit
Bit name
Function
15 to 0
TREF[15:0]
Number of clock cycles between consecutive refresh cycles (default: 1040 clocks).
Chapter 9
External Memory Interface Controller
322
Preliminary User's Manual S19203EE1V3UM00
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