On Fri, Jul 17, 2020 at 10:43 AM, igor-m wrote:
On Fri, Jul 17, 2020 at 07:35 PM, Gary Hale wrote:
Guys, you have to find your SI5351 max frequency, those 310M is the value I
flashed in (for experimental reasons only) because I found out my max
frequency is 321MHz..
Try test 200-350MHz range for better search threshold limit.
PS then i work under H4 vs SI5351+SI4432 i rewrite sweep mode, now it use band table for better ajust settings
I think remove threshold as value and use this table
typedef struct {
uint32_t mode; // mode for SI5351 for set frequency (fixed PLL or fixed Multiplexer divider)
uint32_t freq; // max freq for band
union {
uint16_t div; // divider for fixed Multiplexer mode
uint16_t pll_n; // PLL n for fixed PLL mode
};
uint16_t mul; // Harmonic for main frequency
uint16_t omul; // Harmonic for offset frequency
uint16_t pow; // power (not need)
uint16_t l_gain; // l gain for AIC ADC (ref data)
uint16_t r_gain; //r gain for AIC ADC (measure data)
// uint16_t freq_align; // Not use, frequency align on set
} band_strategy_t;
It allow more easy select sweep settings for every frequency range, but more difficult then now (used threshold step)
Now used this table (for 300MHz threshold)
/*
* Frequency generation divide on band
* Band 1
* 800~10kHz fixed PLL = XTALFREQ * PLL_N_1, fractional divider
* Band 2
* 10kHz~100MHz fixed PLL = XTALFREQ * PLL_N_2, fractional divider
* Band 3
* 100~130MHz fractional PLL = 800-1040MHz, fixed divider 'fdiv = 8'
* Band 4
* 130~170MHz fractional PLL = 780-1080MHz, fixed divider 'fdiv = 6'
* Band 5
* 680~300MHz fractional PLL = 680-1200MHz, fixed divider 'fdiv = 4'
*
* For FREQ_HARMONICS = 300MHz - band range is:
* +-----------------------------------------------------------------------------------------------------------------------------------------------+
* | Band 2 | Band 3 | Band 4 | Band 5 | Band 3 | Band 4 | Band 5 |
* +-----------------------------------------------------------------------------------------------------------------------------------------------+
* | Direct mode x1 : x1 | x3 : x5 | x5-x7 | x7-x9 | x9-x11 |
* +-----------------------------------------------------------------------------------------------------------------------------------------------+
* |10kHz - 100MHz | 100 - 130MHz | 130 - 170MHz | 170 - 300MHz | 300-390MHz | 390-510MHz | 510-900MHz | 900-1500MHz | 1500-2100MHz | 2100-2700MHz |
* +-----------------------------------------------------------------------------------------------------------------------------------------------+
* | f = 50kHz-300MHz | f=100-130 | f=130-170 | f=170-300 | f=180-300 | f=214-300 | f=233-300 |
* | of = 50kHz-300MHz |of= 60- 78 |of= 78-102 |of=102-180 |of=128-215 |of=166-234 |of=190-246 |
* +-----------------------------------------------------------------------------------------------------------------------------------------------+
*/
