Aurora Multimedia TV/FM Tuner - Manual (Page 12)

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Bits D4-D1 (AFC4-AFC1) Read the 4 bits separate of the other bits for easy use. eg. (afc & 0x1E) then shift the bits 1
place to the right. This will give you a value of 0x00 to 0x0F. Follow the chart below to determine the signal.
Bit4 Bit3 Bit2 Bit1
0 1 1 1 -187.5kHz
0 1 1 0 -162.5kHz
0 1 0 1 -137.5kHz
0 1 0 0 -112.5kHz
0 0 1 1 -87.5kHz
0 0 1 0 -62.5kHz
0 0 0 1 -37.5kHz
0 0 0 0 -12.5kHz
1 1 1 1 +12.5kHz
1 1 1 0 +37.5kHz
1 1 0 1 +62.5kHz
1 1 0 0 +87.5kHz
1 0 1 1 +112.5kHz
1 0 1 0 +137.5kHz
1 0 0 1 +162.5kHz
1 0 0 0 +187.5kHz
Bit 0 -PONR 1 = Power on reset after supply breakdown 0 = After a successful reading of the status register
!CxxxFxxxxx TV Channel Frequency setup for International version. !C002F05525 for
channel 2 to be set to a freq of 55.25MHz.
It is sent as a black backround with white text similar to closed captioning.
!CTxxFxSxCxxHxxVxx-xxxxxxxxxxxxxxxxxxx Txx = 00 to 30, Fx = 0 or 1, Sx = 0 or 1, Cxx = 0 to 60, Hxx = 1 to 99,
Vxx = 1 to 99, -xxxxxxxxxx = ASCII text up to 60 characters
This is the command that does it all.
T is text timeout which is up to 30 seconds. 00 is no timeout.
F is a function command. 0 does nothing but 1 will clear the entire OSD display
S is character size ranging from 0 (normal) to 1 (Wide)
C is amount of characters to be displayed
H is Horizontal position (column) ranging from 01 to 99
V is Vertical position (row) ranging from 01 to 99
Anything after the - can be text up to 60 characters long. Hex 0x0A can be used to go to the next line if used in the
sequence.
The following string will clear the screen then send the text Hello World on the 3 row starting at the 2nd column and
timeout after 4 seconds with a text size of 0. !CT04F1S0C11H03V02-Hello World
It is best if using the text generator to turn off the OSD. If left on any command that utilizes the OSD will clear the
last message sent. It is recommended when using the command to use timeouts since static images can burn into
a display causing damage.
Convert the multi-digit ASCII decimal representation response to a true hexadecimal value. Ex. xx = 13 (0x31,
0x33) turn this into 0D. The bit information is once the ASCII to hexadecimal conversion has been done.
Character Generator Commands
General Info
Unless otherwise noted all valid commands are echoed back if properly received unless the “***” address is used.
When Main TV or FM channel is changed via remote or contact closure, the RS232 is updated by sending a
~MCHxxx or ~FCHxxxx response as long as the address is zero.
When Volume is changed via remote or contact closure, the RS232 is updated by sending a ~VOLxx response
Invalid commands will reply with ~ERROR as long as the address is zero.