L64724 LSI Logic Corporation, L64724 Datasheet - Page 145
![no-image](/images/no-image-200.jpg)
L64724
Manufacturer Part Number
L64724
Description
Satellite Receiver
Manufacturer
LSI Logic Corporation
Datasheet
1.L64724.pdf
(294 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L64724-75
Manufacturer:
LSI
Quantity:
20 000
Company:
Part Number:
L64724D-90/65085A2-001
Manufacturer:
LSILOGIC
Quantity:
17 007
- Current page: 145 of 294
- Download datasheet (4Mb)
5.7.1 Carrier Acquisition
5.7.1.1 Frequency Sweep Limits
5.7.1.2 Frequency Sweep
Because the outputs of off-the-shelf tuners for DVB satellite receivers
have a large frequency uncertainty (a common order of magnitude is
generator for signal acquisition.
The L64724 implements the entire carrier recovery loop digitally.
During carrier acquisition, the internal frequency sweep generator
searches for the correct frequency. To vary the sweep rate, change the
value in the CAR_SWR register (Group 4, APR 32, 33). To start the
sweep generator, set the CAR_SW bit (Group 4, APR 41) to 1.
The CAR_USWL (Group 4, APR 34, 35) and CAR_LSWL (Group 4,
APR 36, 37) registers set the upper and lower limits, respectively, of the
frequency sweep.
In the case shown in
APR 34, 35) and CAR_LSWL (Group 4, APR 36, 37) registers must be
set. The state of the CAR_SWP_SWAP (Group 4, APR 41) bit controls
the sweep direction. Even though the Carrier Synchronizer controls the
frequency sweep rate based on the value in the CAR_SWR register
(Group 4, APR 32, 33), the microcontroller can monitor the sweep
direction itself.
Figure 5.6
Upper
Sweep
Limit
Carrier Recovery Loop
Lower
Sweep
Limit
Sweep
Start
Point
5 MHz), the L64724 Carrier Synchronizer includes a frequency sweep
frequency
Frequency Sweeping
Figure
time
5.6, both the CAR_USWL (Group 4,
5-13
Related parts for L64724
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![L64105](/images/no-image3.png)
Part Number:
Description:
Mpeg-2 Audio/video Decoder
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64704](/images/no-image3.png)
Part Number:
Description:
Satellite Decoder Technical Manual 5/97
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64733](/images/no-image3.png)
Part Number:
Description:
Tuner/receiver Chipset
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64733C](/images/no-image3.png)
Part Number:
Description:
Tuner And Satellite Receiver Chipset Data Sheet 2/01
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64767](/images/no-image3.png)
Part Number:
Description:
Smatv Qam Encoder
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64777](/images/no-image3.png)
Part Number:
Description:
DVB Qam Modulator
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64780](/images/no-image3.png)
Part Number:
Description:
Dvb-t Cofdm Demodulator Technical Manual 2/00
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64010ADM](/images/no-image3.png)
Part Number:
Description:
16-Bit HCMOS Multiplier / Accumulators
Manufacturer:
LSI Logic Corporation
![L64108](/images/no-image3.png)
Part Number:
Description:
Transport with Embedded CPU and Control
Manufacturer:
LSI Logic Corporation
![L64133-10GM](/images/no-image3.png)
Part Number:
Description:
32-Bit HCMOS IEEE Floating-Point Processor
Manufacturer:
LSI Logic Corporation
![L64118](/images/no-image3.png)
Part Number:
Description:
Controllers, Transport Controller with Embedded MIPS CPU (TR4101)
Manufacturer:
LSI Logic Corporation
Datasheet:
![L64210NM](/images/no-image3.png)
Part Number:
Description:
Variable-Length Video Shift Registers
Manufacturer:
LSI Logic Corporation