CONTROL_MODULE Registers
9.3.53 ddr_io_ctrl Register (offset = E04h) [reset = 0h]
ddr_io_ctrl is shown in
and described in
.
Figure 9-56. ddr_io_ctrl Register
31
30
29
28
27
26
25
24
ddr3_rst_def_val
ddr_wuclk_disable
Reserved
mddr_sel
Reserved
R/W-0h
R/W-0h
R-0h
R/W-0h
R/W-0h
23
22
21
20
19
18
17
16
Reserved
R/W-0h
15
14
13
12
11
10
9
8
Reserved
R/W-0h
7
6
5
4
3
2
1
0
Reserved
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 9-63. ddr_io_ctrl Register Field Descriptions
Bit
Field
Type
Reset
Description
31
ddr3_rst_def_val
R/W
0h
DDR3 reset default value
30
ddr_wuclk_disable
R/W
0h
Disables the slow clock to WUCLKIN and ISOCLKIN of DDR emif
SS and IOs (required for proper initialization, after which clock could
be shut off).
0 = free running SLOW (32k) clock
1 = clock is synchronously gated
29
Reserved
R
0h
28
mddr_sel
R/W
0h
0: IOs set for DDR2/DDR3 (STL mode)
1: IOs set for mDDR (CMOS mode)
27-0
Reserved
R/W
0h
817
SPRUH73H – October 2011 – Revised April 2013
Control Module
Copyright © 2011–2013, Texas Instruments Incorporated