LM3S1607 Luminary Micro, Inc, LM3S1607 Datasheet - Page 165
LM3S1607
Manufacturer Part Number
LM3S1607
Description
Lm3s1607 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1607.pdf
(548 pages)
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Reset
Reset
Type
Type
User Debug (USER_DBG)
Base 0x400F.E000
Offset 0x1D0
Type R/W, reset 0xFFFF.FFFE
June 02, 2008
Bit/Field
30:2
31
R/W
R/W
NW
1
0
31
15
1
1
R/W
R/W
Register 12: User Debug (USER_DBG), offset 0x1D0
Note:
This register provides a write-once mechanism to disable external debugger access to the device
in addition to 27 additional bits of user-defined data. The DBG0 bit (bit 0) is set to 0 from the factory
and the DBG1 bit (bit 1) is set to 1, which enables external debuggers. Changing the DBG1 bit to 0
disables any external debugger access to the device permanently, starting with the next power-up
cycle of the device. The NOTWRITTEN bit (bit 31) indicates that the register is available to be written
and is controlled through hardware to ensure that the register is only written once.
30
14
1
1
R/W
R/W
29
13
1
1
Name
DBG1
DBG0
DATA
Offset is relative to System Control base address of 0x400FE000.
NW
R/W
R/W
28
12
1
1
R/W
R/W
27
11
1
1
Type
R/W
R/W
R/W
R/W
R/W
R/W
26
10
1
1
0x1FFFFFFF
R/W
R/W
Reset
25
1
9
1
1
1
0
DATA
Preliminary
R/W
R/W
24
1
8
1
Description
User Debug Not Written. Specifies that this 32-bit dword has not been
written.
User Data. Contains the user data value. This field is initialized to all 1s
and can only be written once.
Debug Control 1. The DBG1 bit must be 1 and DBG0 must be 0 for debug
to be available.
Debug Control 0. The DBG1 bit must be 1 and DBG0 must be 0 for debug
to be available.
DATA
R/W
R/W
23
1
7
1
R/W
R/W
22
1
6
1
R/W
R/W
21
1
5
1
R/W
R/W
20
1
4
1
R/W
R/W
19
1
3
1
LM3S1607 Microcontroller
R/W
R/W
18
1
2
1
DBG1
R/W
R/W
17
1
1
1
DBG0
R/W
R/W
16
1
0
0
165
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