L64724 LSI Logic Corporation, L64724 Datasheet - Page 230
L64724
Manufacturer Part Number
L64724
Description
Satellite Receiver
Manufacturer
LSI Logic Corporation
Datasheet
1.L64724.pdf
(294 pages)
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B-16
Equation B.15
Program the four LSBs of APR 28 with 0xA and the four MSBs of APR
28 with 0xA.
Group 4, APR 29 – Set to 0x1F.
The recommended value for CAR_LC_THSL[7:0] is 31 (0x1F) when
FP_LOCK_LEN (Group 4, APR 54) is set to 0. Otherwise, set it
according to the following table:
Group 4, APR 30 – Set to 0x00.
Group 4, APR 31 – Set to 0x20.
Set the RS Bit/Byte Select bit (D7) as needed to select the Reed-
Solomon bit or byte error count for Group 3 APR 0 and 1. Set the
Errorout_Invert bit (D6) as needed to control the polarity of the
ERROROUTn signal. Set the SPI_On_Off bit (D5) to 1. Clear bits D4
through D0 to 0.
Group 4, APR 32–33 – Set to 0x6AE.
The value for the sweep rate, CAR_SWR[15:0], is set according to
Equation
Equation B.16
Equation B.17
L64724 Application Notes
CAR_SWR
CAR_LAMBDA_SEL
fast_sweeprate
FP_LOCK_LEN
B.16,
0
1
=
Equation B.17
2
----------------------------------------------------------------- - 2
37
=
32 * 21.6 (MS/s) = 691.2 (MS/s)
fast_sweeprate T
CAR_LC_THSL[7:0]
=
F s
l og
2
16
t
31
72
and
b
2
16
Equation
=
l og
Low E
High E
2
B.18.
17.7-6 2
b
b
/N
/N
o
o
16
=
10
=
0xA
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