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STA335BWSQS датащи(PDF) 61 Page - STMicroelectronics

номер детали STA335BWSQS
подробное описание детали  2.1-channel, high-efficiency digital audio system with QSound QHD®
PDF  70 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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STA335BWSQS датащи(HTML) 61 Page - STMicroelectronics

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STA335BWSQS
Register description
61/70
6.17
EQ coefficients and DRC configuration register (addr 0x31)
AC0, AC1, AC2 settings are designed for loudspeaker protection function, limiting at the
minimum any audio artefact introduced by typical anti-clipping/DRC algorithms. More
detailed information can be retrieved in the “Configurable output power rate using
“STA335BW” and “STA335BWS vs STA335BW” application notes.
Bit XOB can be used to bypass the crossover filters. Logic 1 means that the function is not
active. In this case, high pass crossover filter works as a pass through on the data path
(b0 = 1, all the other coefficients at logic 0) while the low pass filter is configured to have
zero signal on channel 3 data processing (all the coefficients are at logic 0).
D7
D6
D5
D4
D3
D2
D1
D0
XOB
Reserved
AMGC[3]
AMGC[2]
reserved
SEL1
SEL0
00
00
000
0
Table 69.
SEL bitfield description
SEL[1,0]
EQ RAM bank selected
00/11
Bank 0 activated
01
Bank 1 activated
10
Bank 2 activated
Table 70.
AMGC bitfield description
AMGC[3,2]
Anti-clipping and DRC preset selected
00
DRC/Anti-clipping (default)
01
DRC/Anti-clipping
10/11
Reserved, do not use
Table 71.
AMGC bitfield description
AMGC[1:0]
Mode
00
AC0, stereo anti-clipping 0dB limiter
01
AC1, stereo anti-clipping +1.25dB limiter
10
AC2, stereo anti-clipping +2dB limiter
11
reserved do not use



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