VS1002D Datasheet, PDF (32/54 Pages) List of Unclassifed Manufacturers – MP3 AUDIO CODEC

VLSI
Solution ^y
VS1002d
VS1002D
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
-
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 .. 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 1.0, 2005-04-27
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