SI21672-B22屬于集成電路（IC）的視頻處理。由美國思佳訊公司制造生產(chǎn)的SI21672-B22視頻處理一種集成電路 (IC) 半導(dǎo)體器件，設(shè)計(jì)用于在放大、增強(qiáng)、編碼器和解碼器（編解碼器）、緩沖、校準(zhǔn)、處理、信號調(diào)節(jié)、調(diào)制與解調(diào)、轉(zhuǎn)換、傳輸、伽瑪校正、切換、OSD、數(shù)字化和多路復(fù)用等應(yīng)用中處理音頻和/或視頻信號。

描述 Description

The Si21672-B integrates two separate high-performance

DVB-T, DVB-C, DVB-S, and DVB-S2 digital demodulators into

a single compact package for terrestrial, cable, and satellite

TV standards. Leveraging Skyworks' proven digital

demodulation architecture, each embedded demodulator

achieves excellent reception performance for each media

while significantly minimizing front-end design complexity and

cost. Connecting the Si21672-B 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.

The DVB-T and DVB-C demodulators are enhanced versions

of proven and broadly used Si2167/68/69 Skyworks devices.

Furthermore, ITU J.83 Annex B is also supported for US and

South American cable networks. The IF input supports

standard IF (36 MHz) or low-IF.

The satellite demodulation functionality allows demodulating

widely deployed DVB-S, DIRECTV? (DSS) legacy

standards, and DVB-S2 (AMC compliant)) satellite

broadcasts. A zero-IF interface allows for a seamless

connection to market proven satellite silicon tuners.

The Si21672-B offers an on-chip blind scanning algorithm for

DVB-S/S2 and DVB-C standards (as well as blind lock). 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 Si21672-B embeds two independent programmable

transport stream interfaces which provide a flexible range of

output modes and are fully compatible with all MPEG

decoders or conditional access modules to support any

customer application.

特性 Features

- DVB-T (ETSI EN 300 744)

- COFDM demodulator and enhanced FEC decoder

- NorDig Test Spec 2.2.2, D-Book 7 V3 compliant

- DVB-C (ETSI EN 300 429) / ITU J.83 Annex A/B/C

- QAM demodulator and FEC decoder

- 1 to 7.2 MSymbol/s

- C-Book compliant

- DVB-S2 (ETSI EN 302 307 and TR102-376)

- QPSK/8PSK demodulator and FEC decoder

- Broadcast profile: CCM, 64800 bits frame, single TS

- 1 to 45 MSymbol/s

- DIRECTV? AMC compatible

- DVB-S (ETSI EN 300 421) and DSS supported

- QPSK demodulator and enhanced FEC decoder

- 1 to 45 MSymbol/s

- Dual DiSEqC? 2.x interface, Unicable support

- I2C serial bus interfaces (master and host)

- Dual independent differential IF input for T/C tuners and

differential ZIF I/Q inputs for satellite tuners

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

- Firmware control for upgradeability

- Separate flexible TS interfaces with serial or parallel

outputs

- 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

- Pin-to-pin compatible with all dual demodulator family:

Si216x2

- API compatible with all single and dual demodulator

families