Dual Digital Demodulators Copyright © 2015 by Silicon Laboratories 11.20.2015
Si21682-D60
Dual DVB-T2/T/C Digital TV Demodulator
Description
The Si21682D integrates two separate high-performance digital
demodulators for the DVB-T2/T and DVB-C standards into a single
compact package. Leveraging Silicon Labs' proven digital
demodulation architecture, the Si21682D achieves excellent
reception performance for each media while significantly
minimizing front-end design complexity, cost, and power
dissipation. Connecting the Si21682D to a dual terrestrial/cable TV
tuner results in a high-performance and cost optimized TV
front-end solution.
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 ar
e enhanced version
s of proven and broadly used
Si2164/67/68/69 Silicon Labs devices.
The Si21682D offers an on-chip blind scanning algorithm for the
DVB-C st
andar
d, as well as blind lock function. The Si21682D
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-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-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
- 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
- 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
DEMODULATOR_A CORE
Si21682D
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
ADC_A
TC_ADC_P_A
TC_ADC_N_A
ADC_B
TC_ADC_N_B
TC_ADC_P_B
TV Tuner
I2C Block_A
I2C Block_B
TV Tuner
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
