TDA8960 datasheet(2/32 Pages) PHILIPS

2 / 32 page

1999 Jun 14

Philips Semiconductors

Preliminary speciﬁcation

ATSC 8-VSB demodulator and decoder

TDA8960

FEATURES

General features

• One-chip Advanced Television Systems Committee

(ATSC)-compliant demodulator and concatenated trellis

(Viterbi)/Reed Solomon decoder with de-interleaver and

de-randomizer

• 0.4 µm process

• 3.3 V device

• 64-lead QFP64 package

• Boundary scan test

• Output format: 8-bit wide bus.

8-VSB demodulator

• On-chip digital circuitry for tuner Automatic Gain Control

(AGC)

• Square root raised cosine filter with 11.5% roll-off factor

• Fully internal carrier recovery loop

• Mostly internal clock recovery and AGC loops with

programmable loop filters

• External indication of demodulator lock.

Adaptive equalizer

• Feed forward including a Decision Feedback Equalizer

(DFE) structure

• Range of −2.3 to +10.5 µs

• Adaptation based on ATSC field sync (trained) and/or

8-VSB data (blind)

• Trellis (Viterbi) decoder

• Rate 2⁄

3 (Rate

⁄2 Ungerboeck code based).

Reed Solomon decoder

• (207, 187 and T = 10) Reed Solomon code

• Internal convolutional de-interleaving (I = 52; using

internal memory)

• External indication of uncorrectable error; transport error

indicator bit in Motion Picture Export Group (MPEG)

packet header is also set

• Followed by de-randomizer based on ATSC standard.

I2C-bus interface

• I2C-bus interface to initialize and monitor the

demodulator and Forward Error Correction (FEC)

decoder. Operation without I2C-bus control is possible

(default).

DOCUMENT REFERENCES

See the ATSC URL on ‘http://www.atsc.com’ for the

following related documents:

• “ATSC Digital Television Standard” (document no. A/53,

issued 1995 Sep 16)

• “Guide to the use of the ATSC Digital Television

Standard” (document no. A/54, issued 1995 Oct 04).

APPLICATIONS

• Digital ATSC compliant TV receivers

• Personal computers with digital television capabilities

• Set-top boxes.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8960

QFP64

plastic quad ﬂat package; 64 leads (lead length 1.95 mm); body 14

× 20 × 2.8 mm SOT319-2

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