Dual Digital Demodulators Copyright © 2015 by Silicon Laboratories 10.14.15
Si21662-D60
Dual DVB-S/S2/S2X Digital TV Demodulator
Description
The Si21662D integrates two separate high-performance digital
demodulators for the DVB-S2/S and DVB-S2X standards into a
single compact package. Leveraging Silicon Labs' proven digital
demodulation architecture, the Si21662D achieves excellent
reception performance while significantly minimizing front-end
design complexity, cost, and power dissipation. Connecting the
Si21662D to a dual satellite tuner, results in a high-performance
and cost optimized TV or STB front-end solution.
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. 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.
Variable Coding and Modulation (VCM), QPSK/8PSK, 8/16/
32APSK demodulation schemes and broadcast services profile
are the main specifications of the DVB-S2/S2X demodulator.
Silicon Labs' innovative LDPC and BCH decoding architecture
delivers best-in-class reception while exhibiting low power
dissipation.
The Si21662D offers an on-chip blind scanning algorithm, as well
as blind lock function.
The Si21662D 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
- DVB-S2 (ETSI EN 302 307-1 V1.4.1)
- QPSK/8PSK demodulator
- DVB-S2X (ETSI EN302 307-2 V1.1.1)
- Broadcast profile supported
- QPSK/8PSK, 8/16/32APSK demodulator
- Roll-off factors from 0.05 to 0.35
- VCM supported
- ISSY and NPD supported
- MIS supported
- Output modes: TS, GPCS, and GSE-HEM supported
- Channel bonding for TS transmission supported
- DVB-S (ETSI EN 300 421) and DSS supported
- QPSK demodulator and enhanced FEC decoder
- 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 ZIF I/Q inputs
- GPIOs and multi-purpose ports (two per demodulator)
- Separate flexible TS interfaces with serial or parallel
outputs and cross-bar feature
- Fast lock times
- 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
DEMODULATOR_A CORE
Si21662D
RESETB1.2, 3.3V
SDA_MAST
SCL_MAST
XO
XTAL_I/CLK_IN
CLK_IN/OUT
DEMODULATOR_B CORE
MP_C_A
MP_A_A
MP_B_B
MP_D_B
I2C Block_A
I2C Block_B
HDTV MPEG S.o.C.
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
SCL_HOST
SDA_HOST
ADDR_A
ADDR_B
DiSEqC_A
ADC_A
ADC_A
DiSEqC_IN_A_B
DiSEqC_B
ADC_B
ADC_B
DiSEqC_OUT_A
DiSEqC_CMD
S_ADC_IN_A
S_ADC_IP_A
S_ADC_QN_A
S_ADC_QP_A
Dual Satellite
Tuner
S_ADC_QP_B
S_ADC_QN_B
S_ADC_IP_B
S_ADC_IN_B
DiSEqC_OUT_B
