CMOSTEK CMT2219B, Руководство пользователя

Страница: 5 / 8

AN199
Rev0.7 | 5
/8
www.cmostek.com
Figure 1. AFC_OVF_TH Screen of RFPDK
Users need to fill in the desired RF frequency of RX for manual configure in RFPDK, then get the value of AFC_OVF_TH <7:0>.
As the last step, fill it into the register with an address of 0x27 CUS_FSK4 to make the receiver work normally, otherwise the
receiver may have error when performing AFC, which may cause receiving failure.
For example, if the target RF frequency for RX to be configured is 433.92 MHz, according to the above calculation, it can obtain
the followings.

.


.

.

is 66 and the corresponding binary is 01000010.

FREQ_RX_K <19:0> is 839282 and the corresponding binary
is 11001100111001110010.

in RFPDK.