LM3S316-IQN25 Luminary Micro, Inc., LM3S316-IQN25 Datasheet - Page 83

• Manufacturer Part Number: LM3S316-IQN25
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

October 8, 2006
Bit/Field
9:6
5:4
3
2
1
0
Table 6-3. PLL Mode Control
Table 6-4. Default Crystal Field Values and PLL Programming
MOSCVER
MOSCDIS
IOSCVER
OSCSRC
IOSCDIS
PWRDN
Name
XTAL
(XTAL Binary Value)
1
0
Crystal Number
0000-0011
0100
0101
Type
R/W
R/W
R/W
R/W
R/W
R/W
OEN
X
0
Reset
Oscillator-Related Bits
reserved
3.579545 MHz
3.6864 MHz
0xB
0x0
Mode
Power down
Normal
0
0
0
0
Preliminary
Crystal Frequency (MHz)
Description
This field specifies the crystal value attached to the main
oscillator. The encoding for this field is provided in Table 6-4
on page 83.
Picks among the four input sources for the OSC. The
values are:
function. If set, the verification timer is enabled and an
interrupt is generated if the timer becomes inoperative.
Otherwise, the verification timer is not enabled.
function. If set, the verification timer is enabled and an
interrupt is generated if the timer becomes inoperative.
Otherwise, the verification timer is not enabled.
Internal Oscillator Disable
0: Internal oscillator is enabled.
1: Internal oscillator is disabled.
Main Oscillator Disable
0: Main oscillator is enabled.
1: Main oscillator is disabled.
This bit controls the internal oscillator verification timer
This bit controls the main oscillator verification timer
Value
00
01
10
11
Input Source
Main oscillator (default)
Internal oscillator
Internal oscillator / 4 (this is necessary if used
as input to PLL)
reserved
LM3S316 Data Sheet
83