538
42023E–SAM–07/2013
ATSAM4L8/L4/L2
Table 22-5. Clock Sources for CLK_REF
REFSEL Clock/Oscillator Description
0 RCSYS System RC oscillator clock
1 CLK32K 32kHz Output clock from OSC32K or RC32K
2 CLK1K 1kHz Output clock from OSC32K or RC32K
3 GCLK11 Generic clock 11
4-7 Reserved
