AUTOMOTIVE_Catalog_Ver.2.1

Voice control functionality is seeing increased adoption in vehicles in order to prevent driver distractions by enabling

hands-free operation. However, as the vehicles are operate in noisy environments, noise reduction is essential for imple-

menting voice I/F in automotive. One method of sensing only the intended sounds is to use beamforming technology,

which typically utilizes 2 phase shifted microphones to sense the distance and direction of the sound source. For

example, in a car the microphone array can be configured to isolate voice only from the direction of the driver, and treat

sounds from all other directions as noise.

Connecting the ECU to the HVAC and cluster makes it possible to perform a variety of operations via voice control, such

as temperature adjustment, changing/selecting songs, and attending telephone-calls.

Supports hands-free operation for safer driving

Provides clear audio playback in a compact,

space-saving form factor.

Audio Amplifier

MSOP

Sharp directivity is enabled using 2
omnidirectional mics, while a noise
suppression function improves voice quality.

Beam forming BU 8332 KV-M

Select from among 4 different series to meet

application requirements for VF and IR.

Schottky Barrier Diodes Ultra Low ILow VF SeriesR Series

PMDU

Supports a variety of drive circuits (i.e.
switching power supply). Advanced
processes provide low ON resistances.

MOSFET 40V Series60V Series

SOP

VOICE INTERFACE Products

Memory

Operational Amplifier

Comparator

Voltage Detector

(Reset ICs)

P.

Voltage Regulator^ P.

Bi-Directional Zener Diode P.68 to 70

Anti-surge Chip Resistors P.

P.

P.

VQFP

P.47, P.54 to 55 P.48 to 50, P.60 to 64

P.29 P.

Analog out put

Voltage

Regulator

+12V Battery

I/O

Protection

Memory Op.Amps

Comparators

Voltage Detectors

(Reset IC)

Beam Forming

Noise Suppression

Audio

Amplifier

D/A

Converter

Echo Canceller Bluetooth®

CAN MCU

Transceiver

Power

Protection

MOST

MOSFET SBDLow Ohmic

Resistor

Bi-Zener