Texas Instruments C2000 Workshop Guide And Lab Manual

Oscillator/PLL Clock Module
C2000 Microcontroller Workshop - System Initialization 5 - 3
Oscillator/PLL Clock Module
F2806x Oscillator / PLL Clock Module
(lab file: SysCtrl.c)
XCLKINOFF
X2
XTAL OSC
X1
XTAL
0*
1
0
XCLKIN
Internal
OSC 1
(10 MHz)
Internal
OSC 2
(10 MHz)
OSCCLKSRC2
0*
1
WDCLKSRCSEL
0*
1
OSCCLKSRCSEL
0*
1
10
11
01
00*
CPU
Timer 2
SYSCLKOUT
TMR2CLKSRCSEL
PLL
VCOCLK
OSCCLK
C28x
Core
CLKIN
SYSCLKOUT
LOSPCP
LSPCLK
(PLL bypass)
LSPCLK
DIV
SCI, SPI
All other peripherals
clocked by SYSCLKOUT
MUX
1/n
DIVSEL
OSC1CLK
OSC2CLK
EXTCLK
Watchdog
Module
WDCLK
CPUTMR2CLK
* = default
The oscillator/PLL clock module has two internal, 10 MHz oscillators, and the availability of an
external oscillator or crystal. This provides redundancy in case an oscillator fails, as well as the
ability to use multiple oscillators. The asterisks in the multiplexers show the default settings.
This module has the capability to clock the watchdog, core, and CPU timer 2 from independent
clock sources, if needed.
The on-chip oscillator and phase-locked loop (PLL) block provide all the necessary clocking
signals for the F2806x devices. The two internal oscillators (INTOSC1 and INTOSC2) need no
external components.

Texas Instruments C2000 Specifications

General

Brand	Texas Instruments
Model	C2000
Category	Microcontrollers
Language	English