Introduction

This is the documentation for the data structures, functions, variables, defines, enums, and typedefs for the SCIF driver.
It also gives an example of usage of the SCIF & PM module on UC3 products. This example shows how to configure the System Control Interface(SCIF) to:

• generate a high frequency clock (~24MHz) with a DFLL in closed-loop mode,
• switch the main clock source to the DFLL and set the clock domains to 12MHz (use of the PM module),
• set-up a generic clock at 12MHz with the DFLL as a source,
• output the generic clock to a pin. At the end of the example, using the Power manager(PM), the program goes into the frozen sleep mode (while still maintaining GCLK output to the pin).

Compilation Info

This software was written for the GNU GCC for AVR32 and IAR Systems compiler for AVR32. Other compilers may or may not work.

Device Info

All AVR32 devices with a PM module and a SCIF module can be used. This example has been tested with the following setup:

• STK600 starter kit with the RCUC3L0 routing card
• AT32UC3L-EK board

Setup Information

CPU speed: 115 kHz

On the STK600 + RCUC3L0 setup and also on the AT32UC3L-EK setup, the generic clock is output to the GCLK_1_0 pin. This is the GPIO pin 6/pin pa06/pin#10 on a UC3L QFP48 package. For the RCUC3L0 routing card, this pin is mapped on STK600.PORTA.PA6.

• Check the GCLK1_0 pin with an oscilloscope, it oscillates at the frequency 12MHz.

Contact Info

For more info about Atmel AVR32 visit Atmel AVR32
Support and FAQ: https://www.microchip.com/support/