L64724 LSI Logic Corporation, L64724 Datasheet - Page 93
L64724
Manufacturer Part Number
L64724
Description
Satellite Receiver
Manufacturer
LSI Logic Corporation
Datasheet
1.L64724.pdf
(294 pages)
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CAR_ERROR_SWAP
CAR_AUTO_SWP
Reserved
CAR_PED_SEL
Group 4: Configuration Registers
sweep reaches its limit without achieving carrier lock, or
when the constellation has locked at 45 degrees.
Swap Carrier Error Detector
Set the CAR_ERROR_SWAP bit to control the polarity of
the Carrier Loop Error detector (NDAML, DDML). When
the bit is 1, the polarity of the detector output is
inverted.
Automatic Carrier Sweep Control
Set the CAR_AUTO_SWP bit to enable automatic control
of the carrier sweep mechanism. When the bit is 1,
control of the sweep is handled internally. See
Section 5.6, “Timing Clock Recovery,” page
information on carrier sweep.
Reserved
The Reserved bits are reserved for internal use only.
They should always be cleared to 0, and produce random
results when read.
Carrier Phase Error Detector Select
Program the CAR_PED_SEL bit to select which phase
error estimator will be used for carrier phase tracking. For
CAR_ERROR_SWAP
CAR_AUTO_SWP
CAR_SWP_SWAP
0
1
0
1
0
1
Sweep Mode
Manual sweep control by user
Automatic internal sweep control
Error Detector Output
Normal
Inverted
Sweep Operation
Increasing Frequency
Decreasing Frequency
5-8, for more
[4:3]
3-63
6
5
2
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