User's Manual

COD

ITEM

1 0 Number of dividers by CH1 Programmable divider(Fin1)

0 1 Number of dividers by CH2 Programmable divider(Fin2)

1 1 Number of dividers by reference divider(Xin)

0 0 Option control

1) Programmable divider

LSB MSB

D1 D2

D4 D5

D10

D11

1 0

Calculation for generating 450.0125 MHz frequency, as below.

Set basic channel as 6.25 KHz.

450.0125 MHz ÷ 6.25 KHz = 72002

N and A Counter values are 72002 ÷ 64 = 1125. 03125

N value = 1125 ? 465 hex

A value = 0.3125 ? 0.3125 x 64 = 20 ? 14 hex

LSB 4 1 5 6 4 MSB

2) Reference Divider

LSB MSB

Calculation for basic frequency of 6.25 KHz with TCXO frequency

14.4 MHz ÷ 6.25 KHz = 2304 ? 900 hex

D10

D11