User's Manual

ManualsBrandsCircuit Design ManualsElectronicsUHF Narrow Band Multi Channel Transceiver

9

OG_LMD-400-R_v09e Circuit Design, Inc.

15

OPERATION GUIDE

PLL FREQUENCY SETTING DATA REFERENCE

Example : Setting from 458.000 MHz to 458.6125 MHz

Channel

Frequency FC

H

Expect

Frequency

䌆EXPECT

Lock

Frequency

FVCO

(MHz) (MHz) (MHz)

Number of

Division n

Programable

Counter

N

Swallow Counter

A

458.0000 436.3000 436.3000 17452 272 44

458.0125 436.3125 436.3000 17452 272 44

458.0250 436.3250 436.3250 17453 272 45

458.0375 436.3375 436.3250 17453 272 45

458.0500 436.3500 436.3500 17454 272 46

458.0625 436.3625 436.3500 17454 272 46

458.0750 436.3750 436.3750 17455 272 47

458.0875 436.3875 436.3750 17455 272 47

458.1000 436.4000 436.4000 17456 272 48

458.1125 436.4125 436.4000 17456 272 48

458.1250 436.4250 436.4250 17457 272 49

458.1375 436.4375 436.4250 17457 272 49

458.1500 436.4500 436.4500 17458 272 50

458.1625 436.4625 436.4500 17458 272 50

458.1750 436.4750 436.4750 17459 272 51

458.1875 436.4875 436.4750 17459 272 51

458.2000 436.5000 436.5000 17460 272 52

458.2125 436.5125 436.5000 17460 272 52

458.2250 436.5250 436.5250 17461 272 53

458.2375 436.5375 436.5250 17461 272 53

458.2500 436.5500 436.5500 17462 272 54

458.2625 436.5625 436.5500 17462 272 54

458.2750 436.5750 436.5750 17463 272 55

458.2875 436.5875 436.5750 17463 272 55

458.3000 436.6000 436.6000 17464 272 56

458.3125 436.6125 436.6000 17464 272 56

458.3250 436.6250 436.6250 17465 272 57

458.3375 436.6375 436.6250 17465 272 57

458.3500 436.6500 436.6500 17466 272 58

458.3625 436.6625 436.6500 17466 272 58

458.3750 436.6750 436.6750 17467 272 59

Parameter name Value

Phase Comparing Frequency F

comp

[kHz] 25

Start Channel Frequency F

ch

[MHz] 458.000

Channel Step Frequency [kHz] 12.5

Number of Channel 50

Prescaler M 64

Parameter name Value

Reference Frequency F

osc

[MHz] 21.25

Offset Frequency F

offset

[MHz] 21.7

: For data input

: Result of calculation

: Fixed value

Parameter name Value

Reference Counter R 850

Programmable Counter N Min. Value 272

Programmable Counter N Max. Value 273

Swallow Counter A Min. Value 0

Swallow Counter A Max. Value 63