sta381bw STMicroelectronics, sta381bw Datasheet - Page 78

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description: New Map
6.23.7
6.23.8
Note:
6.24
6.24.1
6.24.2
6.24.3
6.24.4
78/168
Limiter 2 extended attack threshold (addr 0x45)
The extended attack threshold value is determined as follows:
To enable this feature, EATHEN2 bit must be set to 1
Limiter 2 extended release threshold (addr 0x46)
The extended release threshold value is determined as follows:
To enable this feature, ERTHEN2 bit must be set to 1
Attack/release threshold step is 0.125 dB in the range -12 dB to 0 dB.
User-defined coefficient control registers (addr 0x27 - 0x37)
Coefficient address register
Coefficient b1 data register bits 23:16
Coefficient b1 data register bits 15:8
Coefficient b1 data register bits 7:0
ERTHEN2
EATHEN2
Reserved
C1B23
C1B15
C1B7
D7
D7
D7
D7
D7
D7
attack threshold = -12 + EATH2 / 4
release threshold = -12 + ERTH2 / 4
0
0
0
0
0
0
ERTH2[6]
EATH2[6]
Reserved
C1B22
C1B14
C1B6
D6
D6
D6
D6
D6
D6
0
0
0
0
0
0
ERTH2[5]
EATH2[5]
C1B21
C1B13
C1B5
CFA5
D5
D5
D5
D5
D5
D5
1
1
0
0
0
0
Doc ID 018835 Rev 2
ERTH2[4]
EATH2[4]
C1B20
C1B12
C1B4
CFA4
D4
D4
D4
D4
D4
D4
1
1
0
0
0
0
ERTH2[3]
EATH2[3]
C1B19
C1B11
C1B3
CFA3
D3
D3
D3
D3
D3
D3
0
0
0
0
0
0
ERTH2[2]
EATH2[2]
C1B18
C1B10
C1B2
CFA2
D2
D2
D2
D2
D2
D2
0
0
0
0
0
0
ERTH2[1]
EATH2[1]
C1B17
C1B9
C1B1
CFA1
D1
D1
D1
D1
D1
D1
0
0
0
0
0
0
STA381BW
ERTH2[0]
EATH2[0]
C1B16
C1B8
C1B0
CFA0
D0
D0
D0
D0
D0
D0
0
0
0
0
0
0