Texas Instruments C2000 Workshop Guide And Lab Manual

Oscillator/PLL Clock Module
C2000 Microcontroller Workshop - System Initialization 5 - 5
Clock Control Register
SysCtrlRegs.CLKCTL (lab file: SysCtrl.c)
15 14 13 11 10 9 812
NMIRESET
SEL
XTAL
OSCOFF
INTOSC2
HALTI
INTOSC2
OFF
INTOSC1
HALTI
INTOSC1
OFF
WDHALTI
XCLKIN
OFF
Upper Register:
Internal
Oscillator 1 Off
0 = on
1 = off
Internal Oscillator 1
HALT Mode Ignore
0 = automatic turn on/off
1 = ignores HALT Mode
Internal
Oscillator 2 Off
0 = on
1 = off
Internal Oscillator 2
HALT Mode Ignore
0 = automatic turn on/off
1 = ignores HALT Mode
Watchdog
HALT Mode Ignore
0 = automatic turn on/off
1 = ignores HALT Mode
XCLKIN
Off
0 = on
1 = off
Crystal
Oscillator
Off
0 = on
1 = off
NMI
Reset
0 = no delay
1 = delay
0 = default
Clock Control Register
SysCtrlRegs.CLKCTL (lab file: SysCtrl.c)
7 - 5 4 - 3 2 1 0
TMR2CLKSRCSEL
WDCLK
SRCSEL
OSCCLK
SRC2SEL
OSCCLK
SRCSEL
TMR2CLKPRESCALE
Oscillator
Clock Source
0 = internal OSC1
1 = external or
internal OSC2
Oscillator 2
Clock Source
0 = external
1 = internal OSC2
Lower Register:
Watchdog
Clock Source
0 = internal OSC1
1 = external or
internal OSC2
CPU Timer 2
Clock Source
00 = SYSCLKOUT
01 = external
10 = internal OSC1
11 = internal OSC2
CPU Timer 2
Clock Prescale
000 = /1
001 = /2
010 = /4
011 = /8
100 = /16
1xx = reserved
0 = default

Texas Instruments C2000 Specifications

General

Brand	Texas Instruments
Model	C2000
Category	Microcontrollers
Language	English