Data Sheet

PRELIMINARY
VS1063a Datasheet
8 SUPPORTED AUDIO FORMATS
8.1.5 Supported WMA Decoder Formats
Windows Media Audio codec versions 2, 7, 8, and 9 are supported. All WMA profiles (L1,
L2, and L3) are supported. Previously streams were separated into Classes 1, 2a, 2b, and
3. The decoder has passed Microsoft’s conformance testing program. Windows Media Audio
Professional and Windows Media Audio Voice are different codecs and are not supported.
WMA 4.0 / 4.1:
Samplerate Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + + +
11025 + +
16000 + + + +
22050 + + + +
32000 + + + + + +
44100 + + + + + + +
48000 + +
WMA 7:
Samplerate Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + + +
11025 + +
16000 + + + +
22050 + + + +
32000 + + + +
44100 + + + + + + + +
48000 + +
WMA 8:
Samplerate Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192
8000 + + + +
11025 + +
16000 + + + +
22050 + + + +
32000 + + + +
44100 + + + + + + + +
48000 + + +
WMA 9:
Samplerate Bitrate / kbit/s
/ Hz 5 6 8 10 12 16 20 22 32 40 48 64 80 96 128 160 192 256 320
8000 + + + +
11025 + +
16000 + + + +
22050 + + + +
32000 + + + +
44100 + + + + + + + + + + +
48000 + + + + +
In addition to these expected WMA decoding profiles, all other bitrate and samplerate com-
binations are supported, including variable bitrate WMA streams. Note that WMA does not
consume the bitstream as evenly as MP3, so you need a higher peak transfer capability for
clean playback at the same bitrate.
Version: 0.42, 2011-11-24 29