L64704 LSI Logic Corporation, L64704 Datasheet - Page 198
L64704
Manufacturer Part Number
L64704
Description
Satellite Decoder Technical Manual 5/97
Manufacturer
LSI Logic Corporation
Datasheet
1.L64704.pdf
(220 pages)
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Equation B.2
B-10
So, in this case the input signal level is
If the AGC loop is not connected, ensure that the L64704 is sending the
correct output power.
Set Group 4, APR 19 to 0x54.
Group 4, APR 20 – Set PWR_BW according to
PWR_BW[1:0] = 0 in this example.
Set Group 4, APR 20 to 0x00.
Group 4, APR 21 – The recommended value for SCALE[7:0] is 158.
Set Group 4, APR 21 to 0x9E.
Group 4, APR 22 – Set SNR_THS[7:0] = 0x1F.
Set Group 4, APR 22 to 0x1F.
Group 4, APR 23 – Set CAR_OFFSET[7:0] = 0.
Set Group 4, APR 23 to 0x00.
Group 4, APR 24 – The recommended value for CAR_RP is 8.
Set Group 4, APR 24 to 0x08.
Group 4, APR 25 – Set CAR_KP to 64. The CAR_KP register has a
limited range between 30 and 127; values above 127 do not work.
For fixed rate operation:
L64704 Application Notes
S
=
B
B
Select B
Equation B.2
0.5 1.0
----------------------
L
L
=
=
1.7
0.001 BaudRate
------ -
2
n
L
(the equivalent noise BW) based on the criteria shown in
=
+
0.29
--------------- -
1
and
+
1
4
Table
.
B.4:
Table 5.5
on
page
5-23.
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