L64724 LSI Logic Corporation, L64724 Datasheet - Page 92
L64724
Manufacturer Part Number
L64724
Description
Satellite Receiver
Manufacturer
LSI Logic Corporation
Datasheet
1.L64724.pdf
(294 pages)
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3.6.33 Carrier Loop Filter Initialization (Group 4: APR 38, 39, and 40)
3.6.34 Carrier Loop Configuration Register (Group 4: APR 41)
Read/Write: R/W
3-62
APR
41
CAR_SWP_
SWAP
D7
Program the CAR_LF_INIT[23:0] bits with values that set the content of
the Carrier Loop Filter Accumulator. For details, see
“Loop Characteristics,” page
Read/Write: R/W
CAR_LF_INIT Carrier Loop Filter Init
This resister contains the various control bits that configure the Carrier
Loop Synchronizer Loop logic. For more information, see
“Carrier Recovery Loop,” page 5-12.
CAR_SWP_SWAP
L64724 Registers
APRS
CAR_ERROR_
APR
APR
38
39
40
SWAP
D6
D15
D23
D7
CAR_AUTO_
Program the CAR_LF_INIT[23:0] bits to set the value for
the accumulator in the loop filter of the carrier recovery
loop. CAR_LF_INIT[23:0] is a two’s-complement number.
Swap Carrier Sweep Direction
Set the CAR_SWP_SWAP bit to control whether the
Carrier acquisition frequency sweep direction is normal or
reversed. It should be toggled whenever the carrier
SWP
D5
D4
Reserved
5-17.
CAR_LF_INIT[23:16]
CAR_LF_INIT[15:8]
CAR_LF_INIT[7:0]
D3
CAR_PED_
SEL
D2
CAR_OPEN
Section 5.7.2.2,
D1
Section 5.7,
CAR_SW
D0
D16
[23:0]
D0
D8
7
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