TDA8961 Philips Semiconductors, TDA8961 Datasheet - Page 2

• Manufacturer Part Number: TDA8961
• Description: ATSC/NTSC digital TV front-end chipset
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
General features
8-Vestigial Side Band (VSB) demodulator
Adaptive equalizer
NTSC co-channel interference filter
Patented NTSC co-channel interference technology with
low noise penalty.
ORDERING INFORMATION
2000 May 19
TYPE NUMBER
TDA8961
One-chip ATSC-compliant demodulator and
concatenated trellis (Viterbi)/Reed Solomon decoder
with de-interleaver and de-randomizer
0.35 m process
3.3 V device
QFP80 package
Boundary Scan Test (BST)
12 MHz external clock
36 MHz output for external D/A converter
Parallel or serial MPEG-2 transport stream output.
Accepts 10-bit IF data sampled at 36 MHz
6 MHz wide IF signal, centered at 4 MHz
On-chip digital circuitry for tuner AGC
Square-root raised-cosine filter with 11.5% roll-off factor
Fully internal carrier recovery loop
No need for external voltage controlled crystal oscillator
due to internal sample rate converter
Fully internal symbol timing recovery with
programmable loop filters
Technology to handle dynamic multipath conditions.
Including feed forward and feedback sections with
Decision Feedback Equalizer (DFE) structure
Range of 2.3 to +22.5 s by default (in conjunction with
external software, 2.3 to +80 s)
Adaptation based on ATSC field sync (trained) and/or
8-VSB data (blind).
ATSC Digital Terrestrial TV
demodulator/decoder
QFP80
NAME
plastic quad flat package; 80 leads (lead length 1.95 mm);
body14
20
2.8 mm
2
DESCRIPTION
On-chip forward error correction
I
I
and Forward Error Correction (FEC) decoder. An
operation without I
System interfaces
APPLICATIONS
2
2
C interface
C-bus interface to initialize and monitor the demodulator
PACKAGE
Trellis (Viterbi) decoder
Rate
(207, 187, T = 10) Reed Solomon code
Internal convolutional de-interleaving (I = 52; using
internal memory)
External indication of uncorrectable error;
transport_error_indicator bit in MPEG packet header is
also set
De-randomizer based on ATSC standard
Segment error rate readable through I
8-bit wide or serial MPEG-2 transport stream interface
ITU656 bypass mode
MPEG-2 serial transport stream input to reduce external
components when the IC is combined in a system with a
Quadrature Amplitude Modulation (QAM), Quadrature
Phase Shift Keying (QPSK) or Orthogonal Frequency
Division Multiplexing (OFDM) channel decoder.
Digital ATSC compliant TV receiver
Personal computers with digital television capabilities
Set top-boxes.
2
3
(Rate
1
2
2
C-bus is possible (default).
Ungerboeck code based)
Objective specification
2
TDA8961
C.
SOT318-2
VERSION