SAA7740 Philips Semiconductors, SAA7740 Datasheet - Page 2

• Manufacturer Part Number: SAA7740
• Description: Digital Audio Processing IC DAPIC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
Hardware
Software
QUICK REFERENCE DATA
ORDERING INFORMATION
1997 May 30
V
I
f
P
T
SAA7740H
DD(tot)
xtal
NUMBER
SYMBOL
amb
Two digital inputs and two digital outputs in the I
format (i.e. 4 audio channels)
Independent input/output interfaces
Slave input/output interfaces
Slave processing
I
DC filtering at the inputs
One programmable 2nd-order digital filter unit
Two multiply accumulate processor units
(24
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.
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
DD(tot)
tot
Digital Audio Processing IC (DAPIC)
2
C-bus microcontroller interface
TYPE
16-bit/MAC)
total DC supply voltage
total DC supply current
input crystal frequency
total power dissipation
operating ambient temperature
QFP64
NAME
PARAMETER
plastic quad flat package; 64 leads (lead length 1.95 mm); body
14
20
2.8 mm
all V
f
f
xtal
xtal
2
S-bus
= 16.9344 MHz
= 16.9344 MHz
DD
CONDITIONS
DESCRIPTION
pins
2
PACKAGE
APPLICATIONS
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.
Digital amplifiers
Audio combination sets
Car audio systems
TV audio channels.
4.5
12.288
40
MIN.
5.0
60
16.9344
0.3
TYP.
Product specification
5.5
23.0
+85
SAA7740H
MAX.
SOT319-2
VERSION
mA
W
V
MHz
C
UNIT