a little doco on how to drive

git-svn-id: https://svn.code.sf.net/p/freetel/code@2818 01035d8c-6547-0410-b346-abe4f91aad63

diff --git a/codec2-dev/stm32/src/si53xx.c b/codec2-dev/stm32/src/si53xx.c
index 8181fbd74305e0a71f02039a71890ca974355cdc..a39557b49cb9a6f4dc9604d1de7965f5c2caee96 100644 (file)
--- a/codec2-dev/stm32/src/si53xx.c
+++ b/codec2-dev/stm32/src/si53xx.c
@@ -161,7 +161,8 @@ void si5351_init(uint8_t I2C_Address, uint8_t xtal_load_c, uint32_t ref_osc_freq
  * @brief si5351_set_freq(uint64_t freq, uint64_t pll_freq, enum si5351_clock output)
  * Sets the clock frequency of the specified CLK output
  *
- * @param freq - Output frequency in Hz
+ * @param freq - Output frequency in 0.01 Hz increments, so for 10MHz 
+ *               use 1000000000ULL
  * 
  * @param pll_freq - Frequency of the PLL driving the Multisynth
  *   Use a 0 to have the function choose a PLL frequency