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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 237 -
Revision V1.30
NUC97
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CHNIC
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SDRAM Extended Mode Register 3 (SDIC_EMR3)
The SDRAM Extended Mode Register 3 is used to configure SDRAM Extend Mode Register 3. This
Extended Mode Register 3 value will be applied to both SDRAM 0 and SDRAM 1 devices.
Write this register, the SDRAM controller will generate a Load Mode Register (LMR) command to the
SDRAM. This Extended Mode Register is only used for DDR2 SDRAM.
Register
Offset
R/W
Description
Reset Value
SDIC_EMR3
S 0x024
R/W
SDRAM Extended Mode Register 3
0x0000_C000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
Configure
7
6
5
4
3
2
1
0
Configure
Bits
Description
[31:18]
Reserved
Reserved.
[17:15]
MR_DEF
Mode Register Definition
For Extended Mode Register 3, this field is fixed at 3AM.th S
[14:0]
Configure
SDRAM Dependent Configuration
The value of this field is SDRAM type dependent and only available for DDR2 SDRAM.
Please refer the SDRAM initial sequence and related SDRAM specification to know what value
should be configured in this field.