LM3S1627 Datasheet, PDF (196/719 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

System Control
Bit/Field
13
12
11
10:7
6:4
3:0
Name
PWRDN2
reserved
BYPASS2
reserved
OSCSRC2
reserved
Type
R/W
RO
R/W
RO
R/W
RO
Reset
1
0
1
0x0
0x1
Description
Power-Down PLL
When set, powers down the PLL.
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.
Bypass PLL
When set, bypasses the PLL for the clock source.
See Table 5-5 on page 174 for programming guidelines.
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.
Oscillator Source
Selects the input source for the OSC. The values are:
Value Description
0x0 MOSC
Main oscillator
0x1 IOSC
Internal oscillator
0x2 IOSC/4
Internal oscillator / 4
0x3 30 kHz
30-kHz internal oscillator
0x4 Reserved
0x5 Reserved
0x6 Reserved
0x7 Reserved
0
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.
196
November 17, 2011
Texas Instruments-Production Data