MC92314 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC92314

DVB-T Single Chip Demodulator Application Note

Motorola => Freescale 

Device Description

Freescale Semiconductor, Inc.

Top boxes according to the DVB-T standard for 2K transmission. One block of 2048 complex

samples can be processed in 224 µs

NOMUX

DIN 8

DINR 8

FFTSTART

Input

Buffer

16

FFT (11 stages)

incl. Rounding

24

Output

Reorder

Buffer

12 DOUT

12 DOUTR

RESB

CLK

Twiddle Factor ROM

Control

FFTSTART

tion OFFSET

a RES[1:0]

REVRSB

SYMSYNC

form Figure 3-2. Block Diagram of the FFT Processor

In 3.2.2 2K-OFDM Demodulator Block

ry The MC92314 contains also a Demodulator for the Orthogonal Frequency Division Multiplex

a transmission scheme according to the 2K-mode of the ETSI specification for digital terrestrial

in transmission (see reference [1-1]). Together with the 2K FFT block described in the previous

paragraph it includes all the functions required to demodulate the information transmitted in one

lim single UHF channel. In Figure 3-3 the block diagram of the OFDM block is given, followed by the

Pre description of the functional blocks.

MOTOROLA

3-2

Single Chip DVB-T Demodulator - Rev. 1.3 (11/30/98)

For More Information On This Product,

Go to: www.freescale.com

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