package si5351

// The I2C address which this device listens to.
const AddressDefault = 0x60     // Assumes ADDR pin is low
const AddressAlternative = 0x61 // Assumes ADDR pin is high

const (
	OUTPUT_ENABLE_CONTROL = 3

	CLK0_CONTROL = 16
	CLK1_CONTROL = 17
	CLK2_CONTROL = 18
	CLK3_CONTROL = 19
	CLK4_CONTROL = 20
	CLK5_CONTROL = 21
	CLK6_CONTROL = 22
	CLK7_CONTROL = 23

	MULTISYNTH0_PARAMETERS_1 = 42
	MULTISYNTH0_PARAMETERS_3 = 44
	MULTISYNTH1_PARAMETERS_1 = 50
	MULTISYNTH1_PARAMETERS_3 = 52
	MULTISYNTH2_PARAMETERS_1 = 58
	MULTISYNTH2_PARAMETERS_3 = 60

	SPREAD_SPECTRUM_PARAMETERS = 149

	PLL_RESET = 177

	CRYSTAL_INTERNAL_LOAD_CAPACITANCE = 183
)

const (
	CRYSTAL_LOAD_6PF  = (1 << 6)
	CRYSTAL_LOAD_8PF  = (2 << 6)
	CRYSTAL_LOAD_10PF = (3 << 6)
)

const (
	CRYSTAL_FREQ_25MHZ = 25000000
	CRYSTAL_FREQ_27MHZ = 27000000
)

const (
	PLL_A = iota
	PLL_B
)

const (
	R_DIV_1 = iota
	R_DIV_2
	R_DIV_4
	R_DIV_8
	R_DIV_16
	R_DIV_32
	R_DIV_64
	R_DIV_128
)

const (
	MULTISYNTH_DIV_4 = 4
	MULTISYNTH_DIV_6 = 6
	MULTISYNTH_DIV_8 = 8
)

// Frequency constants (in Hz)
const (
	CLKOUT_MIN_FREQ        = 8000      // 8 kHz
	CLKOUT_MAX_FREQ        = 150000000 // 150 MHz
	MULTISYNTH_MAX_FREQ    = 150000000 // 150 MHz
	MULTISYNTH_SHARE_MAX   = 100000000 // 100 MHz
	MULTISYNTH_DIVBY4_FREQ = 150000000 // 150 MHz
	PLL_VCO_MIN            = 600000000 // 600 MHz
	PLL_VCO_MAX            = 900000000 // 900 MHz
)

const (
	SI5351_PLL_C_MAX = 1048575
)