Datasheet

VS1053b Datasheet

9 FUNCTIONAL DESCRIPTION

9.6.8 SCI_WRAMADDR (W)

SCI_WRAMADDR is used to set the program address for following SCI_WRAM writes/reads.

Use an address offset from the following table to access X, Y, I or peripheral memory.

WRAMADDR Dest. addr. Bits/ Description

Start. . . End Start. . . End Word

0x1800. . . 0x18XX 0x1800. . . 0x18XX 16 X data RAM

0x5800. . . 0x58XX 0x1800. . . 0x18XX 16 Y data RAM

0x8040. . . 0x84FF 0x0040. . . 0x04FF 32 Instruction RAM

0xC000. . . 0xFFFF 0xC000. . . 0xFFFF 16 I/O

Only user areas in X, Y, and instruction memory are listed above. Other areas can be accessed,

but should not be written to unless otherwise speciﬁed.

9.6.9 SCI_HDAT0 and SCI_HDAT1 (R)

For WAV ﬁles, SCI_HDAT1 contains 0x7665 (“ve”). SCI_HDAT0 contains the data rate mea-

sured in bytes per second for all supported RIFF WAVE formats: mono and stereo 8-bit or

16-bit PCM, mono and stereo IMA ADPCM. To get the bitrate of the ﬁle, multiply the value by 8.

For AAC ADTS streams, SCI_HDAT1 contains 0x4154 (“AT”). For AAC ADIF ﬁles, SCI_HDAT1

contains 0x4144 (“AD”). For AAC .mp4 / .m4a ﬁles, SCI_HDAT1 contains 0x4D34 (“M4”).

SCI_HDAT0 contains the average data rate in bytes per second. To get the bitrate of the ﬁle,

multiply the value by 8.

For WMA ﬁles, SCI_HDAT1 contains 0x574D (“WM”) and SCI_HDAT0 contains the data rate

measured in bytes per second. To get the bitrate of the ﬁle, multiply the value by 8.

For MIDI ﬁles, SCI_HDAT1 contains 0x4D54 (“MT”) and SCI_HDAT0 contains the average data

rate in bytes per second. To get the bitrate of the ﬁle, multiply the value by 8.

For Ogg Vorbis ﬁles, SCI_HDAT1 contains 0x4F67 “Og”. SCI_HDAT0 contains the average

data rate in bytes per second. To get the bitrate of the ﬁle, multiply the value by 8.

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