Data Sheet

PRELIMINARY
VS1063a Datasheet
8 SUPPORTED AUDIO FORMATS
MPEG 2.0:
Samplerate / Hz Bitrate / kbit/s
8 16 24 32 40 48 56 64 80 96 112 128 144 160
24000 + + + + + + + + + + + + + +
22050 + + + + + + + + + + + + + +
16000 + + + + + + + + + + + + + +
8.1.3 Supported Ogg Vorbis Decoder Formats
Parameter Min Max Unit
Channels 1 2
Window size 64 4096 samples
Samplerate 1 48000 Hz
Bitrate 0 500 kbit/sec
Of the two Ogg Vorbis floors, only floor 1 is supported. No known encoders since early pre-
liminary releases have ever used floor 0. All one- and two-channel Ogg Vorbis files should be
playable with this decoder.
8.1.4 Supported AAC (ISO/IEC 13818-7 and ISO/IEC 14496-3) Decoder Formats
VS1063a decodes MPEG2-AAC-LC-2.0.0.0 and MPEG4-AAC-LC-2.0.0.0 streams, i.e. the low
complexity profile with maximum of two channels can be decoded. If a stream contains more
than one element and/or element type, you can select which one to decode from the 16 single-
channel, 16 channel-pair, and 16 low-frequency elements. The default is to select the first one
that appears in the stream.
Dynamic range control (DRC) is supported and can be controlled by the user to limit or enhance
the dynamic range of the material that contains DRC information.
Both Sine window and Kaiser-Bessel-derived window are supported.
For MPEG4 pseudo-random noise substitution (PNS) is supported. Short frames (120 and 960
samples) are not fully supported.
Spectral Band Replication (SBR) level 3, and Parametric Stereo (PS) level 3 are supported
(HE-AAC v2). Level 3 means that maximum of 2 channels, samplerates upto and including
48 kHz without and with SBR (with or without PS) are supported. Also, both mixing modes
(R
a
and R
b
), IPD/OPD synthesis and 34 frequency bands resolution are implemented. The
downsampled synthesis mode (core coder samplerates > 24 kHz and <= 48 kHz with SBR) is
implemented.
SBR and PS decoding can also be disabled. Also different operating modes can be selected.
See and in section 10.11 : "Extra parameters".
If enabled, the internal clock (CLKI) is automatically increased if AAC decoding needs a higher
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