SAA2520 Datasheet, PDF (12/36 Pages) NXP Semiconductors – Stereo filter and codec for MPEG layer 1 audio applications

Philips Semiconductors
Stereo filter and codec for MPEG layer 1
audio applications
Preliminary specification
SAA2520
Table 1 SAA2521 input/output control.
FRESET
FDIR
output
output
SYNCDAI
output
request a general reset of SAA2521
'1' for decoding and '0' for encoding mode (common to I²S)
pulse for synchronization of digital input/output (TDA1315)
Table 2 Frequency examples.
BIT RATE
(k BITS/s)
384
256
192
128
SBWS FREQUENCY
(kHz)
12
8
6
4
SBCL FREQUENCY
(kHz)
768
512
384
256
ENCODE MODE
The following modes are supported:
Stereo or 2-channel mono with allowable bit rates of 384,
256, 192 and 128 kbits/s; audio sampling frequencies of
48, 44.1 and 32 kHz.
DECODE MODE
The following modes are supported:
Stereo and joint stereo, 2-channel mono and 1-channel
mono with allowable bit rates in the range 448 to 32 k
bits/s; audio sampling frequencies of 48, 44.1 and 32 kHz.
August 1993
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