sta381bws STMicroelectronics, sta381bws Datasheet - Page 132

• Manufacturer Part Number: sta381bws
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description: Sound Terminal compatibility
7.11.5
7.11.6
132/168
Dynamic range compression mode
Limiter 1 extended attack threshold (addr 0x32)
The extended attack threshold value is determined as follows:
To enable this feature, the EATHEN1 bit must be set to 1
Limiter 1 extended release threshold (addr 0x33)
The extended release threshold value is determined as follows:
To enable this feature, the ERTHEN2 bit must be set to 1
Table 150. Limiter attack threshold
LxAT[3:0]
ERTHEN1
EATHEN1
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
D7
D7
attack threshold = -12 + EATH1 / 4
release threshold = -12 + ERTH1 / 4
0
0
DRC (dB relative to volume)
as a function of LxAT
bits (DRC mode)
ERTH1[6]
EATH1[6]
D6
D6
0
0
-31
-29
-27
-25
-23
-21
-19
-17
-16
-15
-14
-13
-12
-10
ERTH1[5]
EATH1[5]
-7
-4
D5
D5
1
1
Doc ID 018937 Rev 2
ERTH1[4]
EATH1[4]
D4
D4
1
1
ERTH1[3]
EATH1[3]
Table 151. Limiter release threshold
D3
D3
LxRT[3:0]
0
0
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ERTH1[2]
EATH1[2]
D2
D2
0
0
DRC (db relative to volume +
as a function of LxRT bits
(DRC mode)
ERTH1[1]
EATH1[1]
D1
D1
-38 dB
-36 dB
-33 dB
-31 dB
-30 dB
-28 dB
-26 dB
-24 dB
-22 dB
-20 dB
-18 dB
-15 dB
-12 dB
LxAT)
0
0
-9 dB
-6 dB
-∞
STA381BWS
ERTH1[0]
EATH1[0]
D0
D0
0
0