LM3S2965-IQC20-A0T Luminary Micro, Inc., LM3S2965-IQC20-A0T Datasheet - Page 79

• Manufacturer Part Number: LM3S2965-IQC20-A0T
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

June 04, 2007
Bit/Field
5:4
3:2
1
0
Table 6-3. Default Crystal Field Values and PLL Programming
Crystal Number (XTAL Binary Value)
MOSCDIS
OSCSRC
IOSCDIS
reserved
Name
0000
0001
0010
0100
0101
1000
1001
1010
0011
0110
0111
1011
1100
1101
1110
1111
Type
R/W
R/W
R/W
RO
Crystal Frequency (MHz) Not Using
the PLL
Reset
0x1
0x0
0
1
Preliminary
Description
Picks among the four input sources for the OSC. The values are:
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.
Internal Oscillator (IOSC) Disable
0: Internal oscillator is enabled.
1: Internal oscillator is disabled.
Main Oscillator Disable
0: Main oscillator is enabled.
1: Main oscillator is disabled (default).
Value
00
01
10
11
1.8432
2.4576
1.000
2.000
Input Source
Main oscillator (default)
Internal oscillator (default)
Internal oscillator / 4 (this is necessary if used as input to PLL)
reserved
6 MHz (reset value)
3.579545 MHz
3.6864 MHz
4.9152 MHz
7.3728 MHz
4.096 MHz
6.144 MHz
8.192 MHz
5.12 MHz
4 MHz
5 MHz
8 MHz
Crystal Frequency (MHz) Using the PLL
reserved
reserved
reserved
reserved
LM3S2965 Microcontroller
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