Digital Demodulator Copyright © 2015 by Silicon Laboratories 11.5.15
HDTV MPEG S.o.C.
Si2169D
HOST_SCL
HOST_SDA
FRONT
END
OSC
& PLL
x(A)PSK
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
QPSK/8PSK/xAPSK
Satellite
ZIF Tuner
Silicon Labs
(Si217x/5x/4x)
TV Tuner
CLK_IN_OUT
LDPC BCH
VITERBI RS
TS_ERR/
GPIO_1
TS_SYNC
TS_VAL
8
TS_CLK
TS_DATA
Si2169-D60
DVB-T2/T/C/S/S2/S2X Digital TV Demodulator
Description
The Si2169D integrates digital demodulators for first and second
generation DVB standards (DVB-T2/T/C/S/S2 and S2X) in a single
advanced CMOS die. Leveraging Silicon Labs' proven digital
demodulation architecture, the Si2169D achieves excellent
reception performance for each media while significantly
minimizing front-end design complexity, cost, and power
dissipation. Connecting the Si2169D to a hybrid TV tuner or digital
only tuner, such as Silicon Labs' Si217x/5x/4x devices, results in a
high-performance and cost optimized TV or STB front-end
solution.
Silicon Labs internally developed D
V
B-T2, including T2-Lite,
demodulator can accept a standard IF (36 MHz) or low-IF input
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, support for all pilot patterns,
and DVB-T2/T auto-detection.
DVB-T, DVB-C, and DVB-S2/S demodulators are next-generation
enhanced versions
of pr
oven and broadly-used Silicon Labs’
Si2169/68/67/66/64/62/60 devices.
The satellite reception allows
de
modulating widespread DVB-S,
DIRECTV™ (DSS), DVB-S2, DIRECTV™ (AMC) legacy
standards, and new Part II of DVB-S2 (S2X) satellite broadcast
standard. A zero-IF interface (differential) allows for a seamless
connection to market proven satellite silicon tuners. Si2169D
embeds DiSEqC
TM
2.0 LNB interface for satellite dish control and
an equalizer to compensate for echoes in long cable feeds from
the antenna to the satellite tuner input.
The cable reception allows demodulating widely deployed DVB-C
leg
a
cy standard (ITU-T J.83 Annex A/C) and the Americas' cable
standard (ITU-T J.83 Annex B).
The Si2169D offers an on-chip blind scan algorithm for DVB-S/S2/
S2X
and DVB-C st
andards, as well as a blind lock function. The
Si2169D programmable transport stream output interface provides
a flexible range of output modes and is fully compatible with all
MPEG decoders or conditional access modules to support any
customer application.
Features
- Pin-to-pin compatible with all Si216x/8x single demods family
- API compatible with all single and dual demods families
- DVB-T2 (ETSI EN 302 755-V1.4.1) with T2-Lite (Annex I)
- Bandwidth: 1.7, 5, 6, 7, and 8 MHz
- NorDig Unified 2.5 and D-Book 8 compliant
- DVB-S2 (ETSI EN 302 307-1 V1.4.1)
- QPSK/8PSK demodulator
- DVB-S2X (ETSI EN302 307-2 V1.1.1)
- QPSK/8PSK, 8/16/32APSK demodulator
- Roll-off factors from 0.05 to 0.35
- DVB-T (ETSI EN 300 744)
- OFDM demodulator and enhanced FEC decoder
- NorDig Unified 2.5 and D-Book 8 compliant
- DVB-C (ETSI EN 300 429) and ITU-T J.83 Annex A/B/C
- QAM demodulator and FEC decoder
- 1 to 7.2 MSymbol/s
- DVB-S (ETSI EN 300 421) and DSS supported
- QPSK demodulator and enhanced FEC decoder
- 1 to 45 MSymbol/s for all satellite standards (<40 MSps in
32APSK)
- LDPC and BCH FEC decoding for T2 and S2 standards
- I
2
C serial bus interfaces (master and host)
- Firmware control (embedded ROM/NVM)
- Upgradeable with patch download via fast SPI or I
2
C
(broadcast mode supported)
- Flexible TS output interface (serial, parallel, and slave)
- DiSEqC
TM
2.0 interface and Unicable
TM
support for satellite
- Fast lock times for all media
- Low power consumption
- Two power supplies: 1.2 and 3.3 V
- 7x7 mm, QFN-48 pin package, Pb-free/RoHS compliant
Applications
- iDTV: on-board design or in a NIM
- Advanced multimedia STB, PVR, and Blu-ray recorders
- PC-TV accessories
