Multimedia Digital Demodulator Copyright © 2013 by Silicon Laboratories 8.12.2013
HDTV MPEG S.o.C.
Si2169
HOST_SCL
HOST_SDA
FRONT
END
OSC
& PLL
nPSK
QAM
DEMOD
S_ADC_IN
S_ADC_IP
S_ADC_QN
S_ADC_QP
ADC (I)
ADC (Q)
EQUAL-
IZER
I
2
C
SWITCH
TUN_SDA
TUN_SCL
GPIOCTRL
MPEG TS
INTERFACE
I
2
C
I/F
MP_C/_D (Sat.)
GPIO_0
RESETB1.2, 3.3V
DSP &
SYNCHRO
DVB-T2/T/C/S/S2
FEC MODULE
OFDM
DEMOD
EQUAL-
IZER
DiSEqC
TM
2.0
DISEQC_IN
DISEQC_OUT
TC_ADC_P
TC_ADC_N
AGCs
ADC
MP_A/_B (T & C)
Ext. Clk or Xtal
Satellite
ZIF Tuner
Silicon Labs
TV Tuner
(Si217x/5x/4x)
CLK_IN_OUT
LDPC BCH
VITERBI RS
TS_ERR/
GPIO_1
TS_SYNC
TS_VAL
8
TS_CLK
TS_DATA
Si2169-B40
DVB-T2/T/C/S/S2 Digital TV Demodulator
Description
The Si2169B integrates DVB-T2, DVB-T, DVB-C, DVB-S, and
DVB-S2 digital demodulators into a single advanced CMOS
technology mixed-signal die for next generation terrestrial,
cable, and satellite TV standards. Leveraging Silicon Labs'
proven digital demodulation architecture, the Si2169B
achieves excellent reception performance for each media
while significantly minimizing front-end design complexity,
cost, and power dissipation. Connecting the Si2169B to a
terrestrial and cable hybrid TV tuner or digital only tuner, such
as Silicon Labs’ Si2178/58/48 devices, results in a
high-performance and cost optimized TV front-end solution.
Silicon Labs internally developed DVB-T2, including T2-Lite,
d
emodu
lator can accept a standard IF (36 MHz) or low-IF
inpu
t and support all modes specified by the DVB-T2
standard. Main features of the DVB-T2 mode are 256 QAM
with rotated constellations, SISO and MISO support, FEF
management, fully autonomous signal acquisition including
automatic L1 signaling parsing, 600 kHz acquisition range,
s
upp
ort for all pilot patterns, and DVB-T2/T auto-detection.
The DVB-T and DVB-C demodulators are enhanced versions
of proven and broadly used Si2167B/68/69 Silicon Labs
devices.
The satellite demodulation functionality allows demodulating
w
i
dely deployed DVB-S, DIRECTV™ (DSS) legacy
standards, and next generation DVB-S2 (AMC compliant)
satellite broadcasts. A zero-IF interface allows for a seamless
connection to market proven satellite silicon tuners. Constant
coding modulation (CCM), 64800 bits frame, and single TS
(broadcast profile) are the main specifications of the DVB-S2
demodulator.
The Si2169B offers an on-chip blind scanning algorithm for
D
VB-S/S2 and DVB-C standards (as well as blind lock). It
also integrates DiSEqC™ 2.0 LNB interface for satellite dish
control and an equalizer to compensate for echoes in long
cable feeds from the LNB to the satellite tuner RF input.
The Si2169B programmable transport stream interface
p
rov
ides a flexible range of output modes and is fully
compatible with all MPEG decoders or conditional access
modules to support any customer application.
Features
- DVB-T2 and T2-Lite (ETSI EN 302 755-V1.3.1)
-
COFDM demodulator and FEC (LDPC/BCH) decoder
- Bandwidth: 1.7, 5, 6, 7 or 8 MHz (and extended BW)
- Supports up to 255 PLPs and outputs the data PLP
plus the common PLP (on a single TS)
- Scrambling of L1 post-signaling supported
- NorDig Unified 2.4, D-Book 7 V2 compliant
- DVB-T (ETSI EN 300 744)
- COFDM demodulator and enhanced FEC decoder
- NorDig Unified 2.4, D-Book 7 V2 compliant
- DVB-C (ETSI EN 300 429) / ITU J.83 Annex A/B/C
- QAM demodulator and FEC decoder
- 1 to 7.2 MSymbol/s
- C-Book compliant
- DVB-S2 (ETSI EN 302 307 and TR102-376)
- QPSK/8PSK demodulator and FEC (LDPC) decoder
-
1 to 45 MSymbol/s
- DVB-S (ETSI EN 300 421)
- QPSK demodulator and enhanced FEC decoder
- 1 to 45 MSymbol/s
- DiSEqC™ 2.x interface, Unicable support
- Enhanced immunity to co-channel interferers
- I
2
C serial bus interfaces (master and host)
- Independent differential IF input for T/C tuner and differ-
ential ZIF I/Q inputs for satellite tuner
- GPIOs and multi-purpose ports for independent AGCs
(up to 4) to control satellite and T/C tuners
- Firmware control for upgradeability
- Flexible TS interface with serial or parallel single output
- Fast lock times for all standards including DVB-T2
- Only two power supplies: 1.2 and 3.3 V
- 7x7 mm, QFN-48 pin package, Pb-free/RoHS compliant
- Pin-to-pin and API compatible with Si2169 and Si2166/
67/68B/64/62/60
Applications
- iDTV: on-board or in a NIM
- Advanced multimedia STB
- PC-TV accessories
- PVR, DVD, and Blu-Ray disc recorders
