sta323wqs STMicroelectronics, sta323wqs Datasheet - Page 53

• Manufacturer Part Number: sta323wqs
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd??
• Manufacturer: STMicroelectronics

STA323WQS
7.11
It is also possible to map each channel independently to either of the two limiters available
within the STA323WQS. In the default mode the channels are not mapped to a limiter.
Table 60.
Each PWM output channel can receive data from any channel output of the volume block.
Which channel a particular PWM output receives depends on the CxOM register bits for that
channel.
Table 61.
Tone control (address 0x11)
Table 62.
00
01
10
TTC3
D7
0
CxLS (1,0)
Channel Limiter Mapping Selection
Channel PWM output mapping
Tone control boost/cut selection
BTC (3...0)/TTC (3...0)
CxOM (1...0)
TTC2
D6
1
00
01
10
11
0000
0001
0111
0110
0111
1000
1001
1101
1110
1111
…
…
TTC1
D5
1
Channel has limiting disabled
Channel is mapped to limiter #1
Channel is mapped to limiter #2
TTC0
D4
1
Channel limiter mapping
BTC3
D3
0
PWM output from
BTC2
Channel 1
Channel 2
Channel 3
Not used
D2
1
Boost/cut
+12 dB
+12 dB
+12 dB
-12 dB
-12 dB
+2 dB
+4 dB
-4 dB
-2 dB
0 dB
…
…
Register descriptions
BTC1
D1
1
BTC0
D0
1
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