sta559bw STMicroelectronics, sta559bw Datasheet - Page 43

• Manufacturer Part Number: sta559bw
• Description: 5-volt, 2-amp, 2.1-channel High-efficiency Digital Audio System Sound Terminal
• Manufacturer: STMicroelectronics

STA559BW
6.3
6.3.1
6.3.2
Audio preset registers (addr 0x0B and 0x0C)
Audio preset register 1 (addr 0x0B)
Using AMGC[3:0] bits, attack and release thresholds and rates are automatically configured
to properly fit application specific configurations.
The AMGC[1:0] bits behave in two different ways depending on the value of AMGC[3:2].
When this value is 00 then bits AMGC[1:0] are defined below in
Table 53.
Audio preset register 2 (addr 0x0C)
AM interference frequency switching
Table 54.
Table 55.
00
01
10
11
0
000
001
010
011
100
Bit
Reserved
XO3
AMAM[2:0]
AMGC[1:0]
D7
D7
1
0
R/W
R/W
Audio preset gain compression/limiters selection for AMGC[3:2] = 00
AM interference frequency switching bits
Audio preset AM switching frequency selection
Reserved
XO2
D6
D6
0
0
0
RST
User programmable GC
AC no clipping 2.1
AC limited clipping (10%) 2.1
DRC night-time listening mode 2.1
0.535 MHz - 0.720 MHz
0.721 MHz - 0.900 MHz
0.901 MHz - 1.100 MHz
1.101 MHz - 1.300 MHz
1.301 MHz - 1.480 MHz
AMAME
AMGC[1]
48 kHz/96 kHz input fs
XO1
D5
D5
0
0
Name
Doc ID 18190 Rev 1
AMGC[0]
XO0
D4
D4
0
0
Audio preset AM enable
0: switching frequency determined by PWMS setting
1: switching frequency determined by AMAM settings
Reserved
AMAM2
D3
D3
0
0
Mode
0.535 MHz - 0.670 MHz
0.671 MHz - 0.800 MHz
0.801 MHz - 1.000 MHz
1.001 MHz - 1.180 MHz
1.181 MHz - 1.340 MHz
Reserved
AMAM1
Description
44.1 kHz/88.2 kHz input fs
D2
D2
0
0
Table
Register description
53.
Reserved
AMAM0
D1
D1
0
0
Reserved
AMAME
D0
D0
0
0
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