K60P100M100SF2RM Datasheet, PDF (543/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Field
Chapter 24 Multipurpose Clock Generator (MCG)
MCG_C1 field descriptions (continued)
Description
0 Internal reference clock is disabled in Stop mode.
1 Internal reference clock is enabled in Stop mode if IRCLKEN is set or if MCG is in FEI, FBI, or BLPI
modes before entering Stop mode.
24.3.2 MCG Control 2 Register (MCG_C2)
Address: MCG_C2 is 4006_4000h base + 1h offset = 4006_4001h
Bit
7
6
5
4
3
2
1
0
Read
0
0
Write
RANGE
HGO
EREFS
LP
IRCS
Reset
0
0
0
0
0
0
0
0
MCG_C2 field descriptions
Field
7
Reserved
6
Reserved
5–4
RANGE
Description
This read-only field is reserved and always has the value zero.
This read-only field is reserved and always has the value zero.
Frequency Range Select
Selects the frequency range for the crystal oscillator or external clock source. Refer to the Oscillator
(OSC) chapter for more details and the device data sheet for the frequency ranges used.
3
HGO
00 Encoding 0 — Low frequency range selected for the crystal oscillator .
01 Encoding 1 — High frequency range selected for the crystal oscillator .
1X Encoding 2 — Very high frequency range selected for the crystal oscillator .
High Gain Oscillator Select
Controls the crystal oscillator mode of operation. Refer to the Oscillator (OSC) chapter for more details.
2
EREFS
0 Configure crystal oscillator for low-power operation.
1 Configure crystal oscillator for high-gain operation.
External Reference Select
Selects the source for the external reference clock. Refer to the Oscillator (OSC) chapter for more details.
0 External reference clock requested.
1 Oscillator requested.
1
Low Power Select
LP
Controls whether the FLL (or PLL) is disabled in BLPI and BLPE modes. In FBE or PBE modes, setting
this bit to 1 will transition the MCG into BLPE mode; in FBI mode, setting this bit to 1 will transition the
MCG into BLPI mode. In any other MCG mode, LP bit has no affect.
Table continues on the next page...
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
543