Dual Digital Demodulators

Copyright © 2015 by Silicon Laboratories

11.20.2015

Si21622-C60

Dual DVB-T2/T/C2/C Digital TV Demodulator

Description

The Si21622C integrates two separate high-performance digital

demodulators for the DVB-T2/T, and DVB-C2/C standards into a

single compact package. Leveraging Silicon Labs' proven digital

demodulation architecture, the Si21622C achieves excellent

reception performance for each media while significantly

minimizing front-end design complexity, cost, and power

dissipation. Connecting the Si21622C to a dual terrestrial/cable TV

tuner results in a high-performance and cost optimized TV

front-end solution.

Silicon Labs' internally developed DVB-C2 demodulator can

accept a standard IF (36 MHz) or low-IF input (differential) and

support all modes specified by the DVB-C2 standard. The main

features of the DVB-C2 mode are 4096-QAM, 6 or 8 MHz

bandwidth, management of notch insertion (broadband and

narrowband), and support of multiple data slices and PLPs.

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 Silicon Labs devices.

The Si21622C offers an on-chip blind scanning algorithm for the

DVB-C, as well as blind lock function. The Si21622C 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

and Si218x2

(broadcast mode supported)

outputs and cross-bar feature

Applications

DEMODULATOR_A CORE

Si21622C

RESETB

1.2, 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

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