SAA7740中文資料飛利浦數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The SAA7740H is a function-specific digital signal processor. The device is capable of performing processing for listening-environments such as equalization, hall-effects, reverberation, surround-sound and digital volume/balance control. The SAA7740H can also be reconfigured (in a dual and quad filter mode) so that it can be used as a digital filter with programmable characteristics.

FEATURES

Hardware

? Two digital inputs and two digital outputs in the I2S-bus format (i.e. 4 audio channels)

? Independent input/output interfaces

? Slave input/output interfaces

? Slave processing

? I2C-bus microcontroller interface

? DC filtering at the inputs

? One programmable 2nd-order digital filter unit

? Two multiply accumulate processor units (24 × 16-bit/MAC)

? DRAM interface and address computation unit for external delay lines

? On-chip coefficient and external delay line address storage

? Hardware controlled soft mute via the MUTE pin

? Hardware controlled soft demute via the RST pin

? Operating ambient temperature; ?40 to +85 °C.

Software

? 5-band parametric equalizer with selectable centre frequency, slope setting and boost/cut gain settings from ?12 to +12 dB

? Stereo width control from mono to stereo to spatial stereo

? Stereo Hall-effects for field acoustics, such as concert halls, with 8 coefficients and 8 delayed taps per channel

? External delay line processing for delays up to 1 second

? Reverberation with selectable reverberation time (up to 5 seconds) and energy

? Three different surround sound programs to obtain a spatial effect on 4 loudspeakers

? Passive DOLBY surround processing with the addition of an external dynamic noise reduction IC

? Karaoke processing

? Dual 16th-order correction filtering

? Quad 8th-order correction filtering

? Digital volume and balance control

? Soft controlled soft mute/demute via the microcontroller interface

? Input switching matrix

? Output rear and front switching matrix.

APPLICATIONS

? Digital amplifiers

? Audio combination sets

? Car audio systems

? TV audio channels.