Dual Digital Demodulators Copyright © 2015 by Silicon Laboratories 11.5.15
I2C Block_A
DEMODULATOR_A CORE
DiSEqC_A
ADC_A
ADC_A
ADC_A
HDTV MPEG S.o.C.
Si21832
SCL_HOST
SDA_HOST
RESETB1.2, 3.3V
DiSEqC_IN_A_B
SDA_MAST
SCL_MAST
XO
XTAL_I/CLK_IN
CLK_IN/OUT
I2C Block_B
DEMODULATOR_B CORE
DiSEqC_B
ADC_B
ADC_B
ADC_B
DiSEqC_OUT_A
DiSEqC_CMD
TC_ADC_P_A
TC_ADC_N_A
S_ADC_IN_A
S_ADC_IP_A
S_ADC_QN_A
S_ADC_QP_A
Dual Satellite
Tuner
TC_ADC_N_B
TC_ADC_P_B
S_ADC_QP_B
S_ADC_QN_B
S_ADC_IP_B
S_ADC_IN_B
DiSEqC_OUT_B
MP_C_A
MP_A_A
MP_B_B
MP_D_B
ADDR_A
ADDR_B
TV Tuner
TV Tuner
TS1_CLK
TS1_SYNC
8
TS1_DATA
TS1_VAL
TS2_SYNC
8
TS2_DATA
TS2_VAL
TS2_CLK
GPIO0/
TS_ERR_B
TS_A
TS_B
GPIO1/
TS_ERR_A
Si21832-B60
Dual ISDB-T and DVB-T2/C2/S2/S2X/T/C/S Digital TV Demodulator
Description
The Si21832B integrates two separate high-performance digital
demodulators for the Japanese and South American terrestrial
ISDB-T standard and for the DVB-T2/T, DVB-C2/C, DVB-S2/S and
DVB-S2X standards into a single compact package. Leveraging
Silicon Labs' proven digital demodulation architecture, the
Si21832B achieves excellent reception performance for each
media while significantly minimizing front-end design complexity,
cost, and power dissipation. Connecting the Si21832B to both a
dual terrestrial/cable TV tuner, and a dual satellite tuner, results in
a high-performance and cost optimized TV front-end solution.
Leveraging significant field exper
ie
nce in DVB terrestrial
demodulation (DVB-T2/T), the Si21832B dual 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.
Silicon Labs’ internally-developed
D
VB-T2 (including T2-Lite)
demodulators support all modes specified by the DVB-T2 standard
(V1.4.1). Main features of the DVB-T2 mode are, SISO and MISO
support, FEF management, fully autonomous signal acquisition
including automatic L1 signaling parsing support for all pilot
patterns, and DVB-T2/T auto-detection. The DVB-T and DVB-C,
including ITU-T J.83 annex B, demodulators are enhanced
versions of proven and broadly used Si2164/67/68/69 Silicon Labs
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. It also
integrates two DiSEqC™ 2.0 LNB interfaces for satellite dish
control and, for each satellite demodulator, an equalizer to
compensate for echoes in long cable feeds from the LNB to the
satellite tuner RF input.
The Si21832B offers an on-chip blind scanning
algorithm
for
DVB-S/S2/S2X and DVB-C standards, as well as blind lock
function. The Si21832B embeds two independent programmable
transport stream interfaces which provide a flexible range of output
modes, including a cross-bar functionality, and are fully compatible
with all MPEG decoders or conditional access modules to support
any customer application.
Features
- Pin-to-pin compatible with all dual demodulator family: Si216x2
and Si218x2
- API compatible with all single and all dual demodulators
- ISDB-T (ABNT NBR 16.601 and 15.604)
- 6, 7, and 8 MHz bandwidth
- Partial reception supported
- AC1 and AC2 decoding
- DVB-T2 and T2-Lite (ETSI EN 302 755-V1.4.1)
- Bandwidth: 1.7, 5, 6, 7 or 8 MHz
- NorDig Unified 2.5 and D-Book 8 compliant
- DVB-C2 (ETSI EN 302 769-V1.2.1)
- 16-QAM to 4096-QAM OFDM demodulation
- DVB-T (ETSI EN 300 744)
- NorDig Unified 2.5, D-Book 8 compliant
- DVB-C (ETSI EN 300 429) / ITU-T J.83 Annex A/B/C
- 1 to 7.2 MSymbol/s, C-Book 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
- Channel bonding for TS transmission supported
- DVB-S (ETSI EN 300 421) and DSS supported
- Dual DiSEqC™ 2.x interface, Unicable support
- 1 to 45 MSps for all satellite standards
(<40 MSps in 32APSK)
- I
2
C serial bus interfaces (master and host)
- Upgradeable with firmware patch download via fast SPI or I
2
C
(broadcast mode supported)
- Dual independent differential IF input for T/C tuners and differ-
ential ZIF I/Q inputs for satellite tuners
- GPIOs and multi-purpose ports (two per demodulator)
- Separate flexible TS interfaces with serial or parallel
outputs and cross-bar feature
- Fast lock times for all standards
- Only two power supplies: 1.2 and 3.3 V
- 8x8 mm, QFN-68 pin package, Pb-free/RoHS compliant
Applications
- Multi-receiver iDTV: on-board or in a NIM
- Advanced multimedia PVR STBs
- PC-TV accessories
- PVR, DVD, and Blu-Ray disc recorders
