Satellite Receiver Copyright © 2005 by Silicon Laboratories 10.5.05
Under embargo until November 7, 2005.
AGC Acquisition Control
Tuner
A/D Converter
Demodulator Viterbi
Decoder
De-interleaver
RS
Decoder
Descrambler
MPEG-TS
LNB Control
RF Sythesizer I2C Interface
XOUT SCL SDA
INT/RLK/GPO
TS_ERR
TS_SYNC
TS_VAL
TS_DATA[7:0]
TS_CLK
PWM/DCS
ISEN/NC
LNB2/DRL
VSEN/TDET
RFIP
LNB1/TGEN
Si2107/08/09/10
Satellite Receiver for DVB-S/DSS
Description
The Si2107/08/09/10 are a family of pin-compatible
complete front end solutions for DSS and DVB-S
digital satellite reception. The IC family incorporates
a tuner, demodulator, and LNB controller into a single
device resulting in a significant reduction in board
space and external components. The device
supports symbol rates of 1 to 45 MBaud over a 950
to 2150 MHz range. A full suite of features including
automatic acquisition, fade recovery, blind scanning,
performance monitoring, and DiSEqC Level 2.2
compliant signaling are supported. The Si2108/10
further add short-circuit protection, overcurrent
protection, and a step-up dc-dc controller to
implement a low-cost LNB supply solution. Si2110/09
versions include a hardware channel scan
accelerator for fast “blindscan”. An I2C bus interface
is used to configure and monitor all internal
parameters.
The Si2107/08/09/10 provides a complete front end
solution for DVB-S and DSS receivers encompassing
the functionality of a satellite network interface
module (NIM), with additional LNB power supply
regulator functionality. By integrating the RF
synthesizer and PLL (including the loop filter),
eliminating the analog I/Q signal interface and the
control loop interfaces between tuner and
demodulator (AGC, clock synchronization), the
product family uses minimal external BOM, resulting
in a low-cost and easy-to-use satellite RF receiver
solution.
Features
- Single-chip tuner, demodulator, and LNB controller
- DVB-S and DSS compliant
- QPSK/BPSK demodulation
- Integrated step-up dc-dc converter for LNB power
supply (Si2108/10 only)
- Input signal level: –81 to –18 dBm
- Symbol rate range: 1 to 45 MBaud
- Automatic acquisition and fade recovery
- Automatic gain control
- On-chip blind scan accelerator (Si2109/10 only)
- DiSEqC™ 2.2 support
- Power, C/N and BER estimators
- I2C bus interface
- 3.3/1.8 V supply, 3.3 V I/O
- Lead-free/RoHS-compliant package
Applications
- Set-top boxes
- Digital video recorders
- Digital televisions
- Satellite PC-TV
- SMATV trans-modulators
(Satellite Master Antenna TV)