LM3S1N16 Datasheet, PDF (228/794 Pages) Texas Instruments – Stellaris® LM3S1N16 Microcontroller

System Control
Register 20: Device Capabilities 4 (DC4), offset 0x01C
This register is predefined by the part and can be used to verify features. If any bit is clear in this
register, the module is not present. The corresponding bit in the RCGC0, SCGC0, and DCGC0
registers cannot be set.
Device Capabilities 4 (DC4)
Base 0x400F.E000
Offset 0x01C
Type RO, reset 0x0004.301F
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
PICAL
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
UDMA ROM
reserved
GPIOE GPIOD GPIOC GPIOB GPIOA
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
1
1
0
0
0
0
0
0
0
1
1
1
1
1
Bit/Field
31:19
18
17:14
13
12
11:5
4
3
2
1
0
Name
reserved
PICAL
reserved
UDMA
ROM
reserved
GPIOE
GPIOD
GPIOC
GPIOB
GPIOA
Type
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
1
0
1
1
0
1
1
1
1
1
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
PIOSC Calibrate
When set, indicates that the PIOSC can be calibrated.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Micro-DMA Module Present
When set, indicates that the micro-DMA module present.
Internal Code ROM Present
When set, indicates that internal code ROM is present.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
GPIO Port E Present
When set, indicates that GPIO Port E is present.
GPIO Port D Present
When set, indicates that GPIO Port D is present.
GPIO Port C Present
When set, indicates that GPIO Port C is present.
GPIO Port B Present
When set, indicates that GPIO Port B is present.
GPIO Port A Present
When set, indicates that GPIO Port A is present.
228
January 21, 2012
Texas Instruments-Production Data