SI2107 Datasheet, PDF (1/80 Pages) Silicon Laboratories – SATELLITE RECEIVER FOR DVB-S/DSS

Si2107/08/09/10
SATELLITE RECEIVER FOR DVB-S/DSS
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)
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 significantly
reduced board space and external component count. 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.
Functional Block Diagram
Pin Assignments
Si2107/08/09/10
44 43 42 41 40 39 38 37 36
VDD_LNA 1
REXT 2
ADDR 3
VDD_MIX 4
VDD_BB 5
VDD_ADC 6
VSEN/TDET 7
LNB1/TGEN 8
ISEN 9
LNB2/DRC 10
RESET 11
PWM/DCS 12
VDD_DIG18 13
GND
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GND
35 XTAL1
34 XTAL2
33 VDD_XTAL
32 XTOUT
31 VDD_PLL33
30 INT/RLK/GPO
29 TS_ERR
28 TS_VAL
27 TS_SYNC
26 SDA
25 SCL
24 TS_DATA[7]
23 TS_DATA[6]
14 15 16 17 18 19 20 21 22
AGC
Acquisition Control
RFIP
Tuner
Demodulator
Viterbi
Decoder
RS
Decoder
VSEN/TDET
LNB2/DRL
ISEN/NC
LNB1/TGEN
PWM/DCS
LNB Control
RF Sythesizer
I2C Interface
XOUT
SCL SDA
TS_CLK
TS_DATA[7:0]
TS_VAL
TS_SYNC
TS_ERR
INT/RLK/GPO
Preliminary Rev. 0.7 3/06
Copyright © 2006 by Silicon Laboratories
Si2107/08/09/10
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.