saa2520 NXP Semiconductors, saa2520 Datasheet - Page 6

• Manufacturer Part Number: saa2520
• Description: Stereo Filter And Codec For Mpeg Layer 1 Audio Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
August 1993
handbook, full pagewidth
handbook, full pagewidth
Stereo filter and codec for MPEG layer 1
audio applications
MPEG
base band
input
data
samples
FORMATTER
DE–
SUB-BAND
FILTER
from SAA2521
allocation
quantized
sync/coding
scale factor
samples
sub - band
samples
DEQUANTIZATION
& ALLOCATION
QUANTIZATION
SCALE FACTOR
ALLOCATION &
INFORMATION
CONTROL
SCALING &
FACTOR
ARRAY
SCALE
TABLE
Fig.4 Encoding mode.
Fig.5 Decoding mode.
6
MULTIPLY
and scale factor indices
allocation information
quantized samples
INFORMATION
SYNC AND
CODING
CONTROL
OUTPUT
sub-band
samples
MLB129
FORMATTER
SUB-BAND
FILTER
MLB128
Preliminary specification
SAA2520
OUTPUT
MPEG
DATA
base band
samples