2000 May 08 3
Philips Semiconductors Product specification
Up-level Car radio Analog Signal
Processor (CASP)
TEA6880H
1 FEATURES
1.1 General
• I2C-bus compatible
• Digital alignment/adjustment via I2C-bus:
– FM noise blanker sensitivity
– FM stereo noise canceller
– FM High Cut Control (HCC)
– FM stereo separation.
• FM audio processing hold for RDS updating; holds the
detectors for the FM weak signal processing in their
present state
• FM bandwidth limiting; limits the bandwidth of the FM
audio signal with external capacitors
• AM stereo input; AM stereo audio can be fed in at the
pins for the de-emphasis capacitors; this will provide
8 dB of gain to the AM audio.
1.2 Stereo decoder and noise blanking
• FM stereo decoder
• Accepts FM multiplex signal and AM audio at input
• Pilot detector and pilot canceller
• De-emphasis selectable between 75 and 50 µs
• AM noise blanker: impulse noise detectorand an audio
hold.
1.3 Weak signal processing
• FM weak signal processing: six signal condition
detectors, soft mute, stereo noise canceller (blend), and
High Cut Control (roll-off).
1.4 Audio pre-amplifier
• Source selector for 6 sources: 2 stereo inputs external
(A and B),1 symmetrical stereoinput(C),1 symmetrical
mono input (D), 1 internal stereo input (AM or FM), and
1 chime/diagnostic mono input
• Volume 1 control from +20 to −56 dB in 1 dB steps;
programmable 20 dB loudness control included
• Volume 2 control from 0 to −56 dB in 1 dB steps, −56,
−58.5, −62, −68 dB and mute
• Programmable loudness control with bass boost as well
as bass and treble boost
• Treble control from −14 to +14 dB in 2 dB steps
• Bass control from −18 to +18 dB in 2 dB steps with
selectable characteristic
• Analog Step Interpolation (ASI) minimizes pops by
smoothing out the transitions in the audio signal when a
switch is made
• Audio Blend Control (ABC) minimizes pops by
automatically incrementing the volume and loudness
controls through each step between their present
settings and the new settings
• Rear Seat Audio (RSA) can select different sources for
the front and rear speakers
• Chime input: can be sent to any audio output, at any
volume level
• Chime adder circuit: chime input can also be summed
with left front and/or right front audio, or be turned off.
2 GENERAL DESCRIPTION
The TEA6880H is a monolithic bipolar integrated circuit
providing the stereo decoder function and ignition noise
blanking facility combined with source selector and
tone/volume control for AM/FM car radio applications. The
device operates with a power supply voltage range of
7.8 to 9.2 V and a typical current consumption of 40 mA.
3 ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TEA6880H QFP64 plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14 × 20 × 2.8 mm
SOT319-2