sta335bwsqs13tr STMicroelectronics, sta335bwsqs13tr Datasheet - Page 61

• Manufacturer Part Number: sta335bwsqs13tr
• Description: 2.1-channel, High-efficiency Digital Audio System With Qsound Qhd
• Manufacturer: STMicroelectronics

STA335BWSQS
6.17
EQ coefficients and DRC configuration register (addr 0x31)
Table 69.
Table 70.
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.
Table 71.
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).
XOB
D7
0
AMGC[3,2]
AMGC[1:0]
SEL[1,0]
00/11
10/11
01
10
00
01
00
01
10
11
SEL bitfield description
AMGC bitfield description
AMGC bitfield description
D6
0
Reserved
Bank 0 activated
Bank 1 activated
Bank 2 activated
DRC/Anti-clipping (default)
DRC/Anti-clipping
Reserved, do not use
AC0, stereo anti-clipping 0dB limiter
AC1, stereo anti-clipping +1.25dB limiter
AC2, stereo anti-clipping +2dB limiter
reserved do not use
D5
0
AMGC[3]
D4
0
Anti-clipping and DRC preset selected
EQ RAM bank selected
AMGC[2]
D3
0
Mode
reserved
D2
0
Register description
SEL1
D1
0
SEL0
D0
0
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