Datasheet

244
32142D–06/2013
ATUC64/128/256L3/4U
14. System Control Interface (SCIF)
Rev: 1.1.0.0
14.1 Features
• Supports crystal oscillator 0.45-16MHz (OSC0)
• Supports Digital Frequency Locked Loop 20-150MHz (DFLL)
• Supports Phase Locked Loop 80-240MHz (PLL)
• Supports 32KHz ultra-low-power oscillator (OSC32K)
• Supports 32kHz RC oscillator (RC32K)
• Integrated low-power RC oscillator (RCSYS)
• Generic clocks (GCLK) with wide frequency range provided
• Generic Clock Prescaler
• Controls Bandgap
• Controls Brown-out detectors (BOD) and supply monitors
• Controls Voltage Regulator (VREG) behavior and calibration
• Controls Temperature Sensor
• Controls Supply Monitor 33 (SM33) operating modes and calibration
• Controls 120MHz integrated RC Oscillator (RC120M)
• Four 32-bit general-purpose backup registers
14.2 Overview
The System Control Interface (SCIF) controls the oscillators, Generic Clocks, BODs, Bandgap,
VREG, Temperature Sensor, and Backup Registers.
14.3 I/O Lines Description
14.4 Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
Table 14-1. I/O Lines Description
Pin Name Pin Description Type
RC32OUT RC32 output at startup Output
XIN0 Crystal 0 Input Analog/Digital
XIN32 Crystal 32 Input (primary location) Analog/Digital
XIN32_2 Crystal 32 Input (secondary location) Analog/Digital
XOUT0 Crystal 0 Output Analog
XOUT32 Crystal 32 Output (primary location) Analog
XOUT32_2 Crystal 32 Output (secondary location) Analog
GCLK9-GCLK0 Generic Clock Output Output
GCLK_IN2-GCLK_IN0 Generic Clock Input Input