Description

The Si21802 integrates two separate high-performance digital

demodulators for the Japanese and South American terrestrial

ISDB-T standard and for the DVB-T and DVB-C standards in a

single compact package. Leveraging Skyworks' proven digital

demodulation architecture, the Si21802 achieves excellent

reception performance for each media while significantly

minimizing front-end design complexity, cost, and power

dissipation. Connecting the Si21802 to a dual terrestrial/cable TV

tuner results in a high-performance and cost optimized TV or STB

front-end solution.

Leveraging significant field experience in DVB terrestrial

demodulation (DVB-T), the Si21802 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. DVB-T and DVB-C demodulators are

next-generation enhanced versions of proven and broadly-used

Skyworks’ Si2169/68/67/66/64/62/60 devices.

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 Si21802 offers an on-chip blind scanning algorithm for DVB-C

standard, as well as blind lock function.

The Si21802 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 (reception of only one OFDM

segment at the center of a group of segments)

- AC1 and AC2 decoding

- 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

- I2C serial bus interfaces (master and host)

- Upgradeable with firmware patch download via fast SPI or I2C

(broadcast mode supported)

- Firmware control (embedded ROM/NVM)

- Dual independent differential IF input for T/C tuners

- GPIOs and muti-purpose ports (two per demodulator)

- Separate flexible TS interfaces with serial or parallel outputs

and cross-bar feature

- Fast lock times for all media

- Low power consumption

- Only two power supplies: 1.2 and 3.3 V

- 8x8 mm, QFN-68 pin package, Pb-free/RoHS compliant