21
Request tuner settings for a specified frequency, Command code 67. Parameter 1: frequency,
most significant digit, Parameter 2: frequency, least significant digit. Requests the tuner to return
the tuner parameters for a specified frequency. Frequency expressed as period in "tick" units of
0.8 µSec. Valid values of period range from 370 ticks (55.3 MHz) to 11593 ticks (1.76 MHz).
A shortcut for determining the period value from the desired operating frequency in MHz is
Period = 20,480 / Freq
So, for example to set 14.230 MHz:
Period = 20,480 / 14.230 = 1439
Most significant byte (1439) = 0x05
Least significant byte (1439) = 0x9F
So, the command would be sent as: 0x43 0x05 0x9F
Request memory dump, Command code 68. Requests the tuner to dump all EEPROM settings.
See application notes for details.
