BSP3505D Micronas Intermetall GmbH, BSP3505D Datasheet - Page 4

• Manufacturer Part Number: BSP3505D
• Manufacturer: Micronas Intermetall GmbH

4
BSP 3505D
Baseband Sound Processor
Release Notes: The hardware description in this
document is valid for the BSP 3505D version A2.
1. Introduction
The BSP 3505D is designed as a single-chip Baseband
Sound Processor for applications in analog and digital
TV sets, video recorders, and satellite receivers.
The IC is produced in submicron CMOS technology, and
is fully pin and software compatible to the MSP 34xx
family. The BSP 3505D is available in a PLCC68,
PSDIP64, PSDIP52, PQFP80, and in a PQFP44 pack-
age.
Note: The BSP 3505D version has reduced control reg-
isters and less functional pins. The remaining registers
are software compatible to the MSP 34xxD. The pinning
is compatible to the MSP 34xxD.
1.1. BSP 3505D Integrated Functions
– Stereo baseband input via integrated A/D converters
– Two stereo D/A converters
– AVC: Automatic Volume Correction
– Bass, treble, volume, loudness processing
– Full SCART in/out matrix without restrictions
– spatial effect (pseudostereo / basewidth enlargement)
– Digital control output pins D_CTR_OUT0/1
– Reduction of necessary controlling
– Less external components
Fig. 1–1: Typical BSP 3505D application
Tuner
SCART
Inputs
SIF
VIF
SCART1
SCART2
FM/AM Mono
2
2
BSP 3505D
1.2. Features of the DSP-Section
– flexible selection of audio sources to be processed
– digital baseband processing: volume, bass, treble,
– simple controlling of volume, bass, treble, loudness,
1.3. Features of the Analog Section
– two selectable analog stereo audio baseband inputs
– one selectable analog mono input:
– stereo high-quality A/D converter, S/N-Ratio: 85 dB
– 20 Hz to 20 kHz bandwidth for SCART-to-SCART-
– loudspeaker: stereo four-fold oversampled D/A-con-
– stereo four-fold oversampled D/A converter supplying
Fig. 1–2: Main I/O Signals BSP 3505D
MONO IN
SCART1 IN
SCART2 IN
loudness, and spatial effects
and spatial effects
(= two SCART inputs)
input level: 2 V RMS,
input impedance: 25 k
input level: 2 V RMS,
input impedance: 15 k
copy facilities
verter
output level per channel: max. 1.4 VRMS
output resistance: max. 5 k
S/N-ratio: 85 dB at maximum volume
max. noise voltage in mute mode: 10 V
(BW: 20 Hz ...16 kHz)
a stereo SCART-output
output level per channel: max. 2 V RMS,
output resistance: max. 0.5 k ,
S/N-Ratio: 85 dB (20 Hz...16 kHz)
2
2
2
SCART1
BSP 3505D
2
PRELIMINARY DATA SHEET
Loudspeaker
SCART
Output
I
2
C
2
2
Loudspeaker
OUT
SCART
OUT
Micronas