SI2181-B60 Datasheet, PDF (1/2 Pages) Silicon Laboratories – ISDB-T and DVB-T/C/S/S2/S2X Demodulator

Si2181-B60
ISDB-T and DVB-T/C/S/S2/S2X Demodulator
Description
The Si2181 integrates digital demodulators for the Japanese and
South American terrestrial ISDB-T standard and for all first and
second generation DVB standards (DVB-T/C/S/S2 and S2X) in a
single advanced CMOS die. Leveraging Silicon Labs' proven
digital demodulation architecture, the Si2181 achieves excellent
reception performance for each media while significantly
minimizing front-end design complexity, cost, and power
dissipation. Connecting the Si2181 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.
Leveraging significant field experience in DVB terrestrial
demodulation (DVB-T), Silicon Labs’ internally-developed ISDB-T
demodulator can accept standard or low-IF inputs (differential) and
complies with the Brazilian SBTVD-T terrestrial specifications
(ABNT NBR 16.601 and 15.604). Main features include fast
channel scan, very short lock times, state of the art CCI
performance, partial reception, and auxiliary channels decoding.
DVB-T, DVB-C, and DVB-S2/S demodulators are next-generation
enhanced versions of proven and broadly-used Silicon Labs’
Si2169/68/67/66/64/62/60 devices.
The satellite reception allows demodulating 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. Si2181
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
legacy standard (ITU-T J.83 Annex A/C) and the Americas' cable
standard (ITU-T J.83 Annex B).
The Si2181 offers an on-chip blind scan algorithm for DVB-S/S2/
S2X and DVB-C standards, as well as a blind lock function. The
Si2181 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
- ISDB-T (ABNT NBR 16.601 and 15.604)
- 6, 7, and 8 MHz bandwidth
- Partial reception supported
- AC1 and AC2 decoding
- DVB-S2 (ETSI EN 302 307-1 V1.4.1)
- QPSK/8PSK demodulator
- DVB-S2X (ETSI EN302 307-2 V1.1.1)
- QPSK/8PSK, 8/16/32APSKdemodulator
- 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 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 S2 standard
- I²C serial bus interfaces (master and host)
- Firmware control (embedded ROM/NVM)
- Upgradeable with patch download via I²C or fast SPI
- 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
1.2, 3.3V RESETB
DiSEqC^TM
2.0
DSP &
SYNCHRO
QPSK/8PSK/xAPSK
Satellite
ZIF Tuner
S_ADC_IP
S_ADC_IN
S_ADC_QP
S_ADC_QN
MP_C/_D (Sat.)
MP_A/_B (T & C)
ADC (I)
ADC (Q)
AGCs
FRONT
END
x(A)PSK
QAM
DEMOD
OFDM
DEMOD
EQUAL-
IZER
EQUAL-
IZER
VITERBI
LDPC
CTRL
RS
BCH
GPIO
Silicon Labs
(Si217x/5x/4x)
TV Tuner
TC_ADC_P
TC_ADC_N ^ADC
Ext. Clk or Xtal
CLK_IN_OUT
TUN_SDA
TUN_SCL
I²C
SWITCH
OSC
& PLL
DVB-T/C/S2/S
and ISDB-T FEC MODULE
Si2181
I²C
I/F
TS_ERR/
GPIO_1
TS_SYNC
TS_VAL
TS_CLK
TS_DATA
8
HOST_SDA
HOST_SCL
Digital Demodulator
Copyright © 2015 by Silicon Laboratories
11.5.15