SysCtl

System control determines the overall operation of the device. It provides information about the device, controls the clocki for the core and individual peripherals, and handles reset detection and report. More...

Collaboration diagram for SysCtl:

Modules
	xSysCtl
	CoX SysCtl Peripheral Interface.

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Detailed Description

System control determines the overall operation of the device. It provides information about the device, controls the clocki for the core and individual peripherals, and handles reset detection and report.

• Configure system clock, multiple clock sources can be selected(including Main Oscillator (MOSC), Internal Oscillator (IOSC), Internal 30-kHz Oscillat or,External Real-Time Oscillator).
• Reset or enable/disable the peripheral individually thourgh software.
• Configure system operation level,including Run Mode and Sleep Mode.

Contents

• 1. SysCtl Function Desc
  • 1.2 Reset Control
  • 1.3 Clock Control
    • 1.3.2 Clock Sources
    • 1.3.3 Clock Configuration
  • 1.5 System Control
• 2. SysCtl Applications

1. SysCtl Function Desc

1.1 Device Identification

Several read-only registers provide software with information on the microcontroller, such as version, part number, SRAM size, flash size, and other features.

1.2 Reset Control

The controller has five sources of reset :

• External reset input pin (RST) assertion
• Power-on reset (POR)
• Internal brown-out (BOR) detector
• Software-initiated reset (with the software reset registers)
• A watchdog timer reset condition violation

1.3 Clock Control

1.3.1 Main clock tree:

1.3.2 Clock Sources

There are multiple clock sources for use in the device:

• Internal Oscillator (IOSC).
• Main Oscillator (MOSC).
• Internal 30-kHz Oscillator.
• External Real-Time Oscillator.

1.3.3 Clock Configuration

• Source of clocks in sleep and deep-sleep modes
• System clock derived from PLL or other clock source
• Enabling/disabling of oscillators and PLL
• Clock divisors
• Crystal input selection

1.5 System Control

There are four levels of operation for the device defined as:

• Run Mode
• Sleep Mode
• Deep-Sleep Mode
• Hibernate Mode

2. SysCtl Applications

add in the future

Note:

Here describes the common functions of the SysCtl Peripheral. The CoX Peripheral Interface is based on the functions above.