VS1011 Datasheet, PDF (30/43 Pages) List of Unclassifed Manufacturers – MP3 AUDIO CODEC

VLSI
Solution ^y
VS1011 PRELIMINARY
VS1011
8. FUNCTIONAL DESCRIPTION
“bitrate”
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ID=3 / kbit/s
forbidden
320
256
224
192
160
128
112
96
80
64
56
48
40
32
-
ID=0,1,2 / kbit/s
forbidden
160
144
128
112
96
80
64
56
48
40
32
24
16
8
-
When decoding a WAV file, SPI HDAT0 and SPI HDAT1 read as 0x7761, and 0x7665, respectively.
8.6.10 SCI AIADDR (RW)
SCI AIADDR indicates the start address of the application code written earlier with SCI WRAMADDR
and SCI WRAM registers. If no application code is used, this register should not be initialized, or it
should be initialized to zero. For more details, see Application Notes for VS10XX.
8.6.11 SCI VOL (RW)
SCI VOL is a volume control for the player hardware. For each channel, a value in the range of 0..191
or 255 may be defined to set its attenuation from the maximum volume level (in 0.5 dB steps). The
left channel value is then multiplied by 256 and the values are added. Thus, maximum volume is 0 and
total silence if 0xFFFF. Example: for a volume of -2.0 dB for the left channel and -3.5 dB for the right
channel: (4*256) + 7 = 0x407. Note, that at startup volume is set to full volume. Resetting the software
does not reset the volume setting.
Note: Setting the volume to total silence (255 for both left and right channels) will turn analog power
off.
8.6.12 SCI AICTRL[x] (RW)
SCI AICTRL[x] registers ( x=[0 .. 3] ) can be used to access the user’s application program.
Version 0.71, 2004-07-20
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