K60P100M100SF2RM Datasheet, PDF (577/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Chapter 25 Oscillator (OSC)
XTAL
OSC
V_SS
EXTAL
I/O
Clock Input
Figure 25-5. External Clock Connections
25.7 Memory Map/Register Definitions
Some oscillator module register bits are typically incorporated into other peripherals such
as MCG or SIM.
25.7.1 OSC Memory Map/Register Definition
Absolute
address
(hex)
OSC memory map
Register name
Width
(in bits)
Access
Reset value
4006_5000 OSC Control Register (OSC_CR)
8
R/W
00h
Section/
page
25.71.1/
577
25.71.1 OSC Control Register (OSC_CR)
After OSC is enabled and starts generating the clocks, the configurations such as low
power and frequency range, must not be changed.
Address: OSC_CR is 4006_5000h base + 0h offset = 4006_5000h
Bit
Read
Write
Reset
7
ERCLKEN
0
6
5
4
0
0
EREFSTEN
0
0
0
3
SC2P
0
OSC_CR field descriptions
Field
7
ERCLKEN
External Reference Enable
Description
Enables external reference clock (OSCERCLK).
Table continues on the next page...
2
SC4P
0
1
SC8P
0
0
SC16P
0
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
577