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STA381BWS датащи(PDF) 127 Page - STMicroelectronics

номер детали STA381BWS
подробное описание детали  Sound Terminal 2.1-channel high-efficiency digital audio system
PDF  174 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BWS датащи(HTML) 127 Page - STMicroelectronics

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STA381BWS
Register description: Sound Terminal compatibility
provided via the master volume register, any channel whose total volume is less than -80 dB
is muted.
All changes in volume take place at zero-crossings when ZCE = 1 (Configuration register E
(addr 0x04)) on a per-channel basis as this creates the smoothest possible volume
transitions. When ZCE = 0, volume updates occur immediately.
7.8
Audio preset registers (addr 0x0C)
7.8.1
Audio preset register (addr 0x0C)
Table 133. Master volume offset as a function of MVOL[7:0]
MVOL[7:0]
Volume offset from channel value
00000000 (0x00)
0 dB
00000001 (0x01)
-0.5 dB
00000010 (0x02)
-1 dB
……
01001100 (0x4C)
-38 dB
……
11111110 (0xFE)
-127.5 dB
11111111 (0xFF)
Hard master mute
Table 134. Channel volume as a function of CxVOL[7:0]
CxVOL[7:0]
Volume
00000000 (0x00)
+48 dB
00000001 (0x01)
+47.5 dB
00000010 (0x02)
+47 dB
……
01011111 (0x5F)
+0.5 dB
01100000 (0x60)
0 dB
01100001 (0x61)
-0.5 dB
……
11010111 (0xD7)
-59.5 dB
11011000 (0xD8)
-60 dB
11011001 (0xD9)
-61 dB
11011010 (0xDA)
-62 dB
……
11101100 (0xEC)
-80 dB
11101101 (0xED)
Hard channel mute
……
11111111 (0xFF)
Hard channel mute
D7
D6
D5
D4
D3
D2
D1
D0
XO3
XO2
XO1
XO0
AMAM2
AMAM1
AMAM0
AMAME
Obsolete
Product(s)
- Obsolete
Product(s)



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