描述 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 Skyworks' 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 frontend

solution.

Skyworks’ internally-developed DVB-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 Skyworks devices.

The Si21682D offers an on-chip blind scanning algorithm for the

DVB-C standard, 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.

特性 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

- I2C serial bus interfaces (master and host)

- Upgradeable with firmware patch download via fast SPI or I2C

(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