STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 64

• Manufacturer Part Number: STA381BWSTR
• Description: Audio DSPs Sound Terminal 2.1 High EFF Dig Audio
• Manufacturer: STMicroelectronics

Specifications of STA381BWSTR

• Product Category: Audio DSPs
• Rohs: yes
• Operating Supply Voltage: 4.5 V to 25.5 V
• Operating Temperature Range: 0 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: VQFN-48
• Snr: 100 dB

Register description: New Map
6.16.4
6.16.5
6.17
6.17.1
6.17.2
64/171
Zero-detect mute enable
Table 42.
Refer to
0x65, 0x3F, 0x40,
Submix mode enable
Table 43.
Configuration register E (addr 0x15)
Noise-shaper bandwidth selection
Table 44.
AM mode enable
Table 45.
The STA381BWS features an FFX processing mode that minimizes the amount of noise
generated in the frequency range of AM radio. This mode is intended for use when FFX is
operating in a device with an active AM tuner. The SNR of the FFX processing is reduced to
approximately 83 dB in this mode, which is still greater than the SNR of AM radio.
Bit
Bit
Bit
Bit
Reserved
2
3
6
7
D7
1
6.32: Enhanced zero-detect mute and input level measurement (address 0x61-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Zero-detect mute enable
Submix mode enable
Noise-shaper bandwidth selection
AM mode enable
ZCE
D6
RST
RST
0
RST
0
0
RST
0x6F).
0
0
Reserved
NSBW
D5
Name
Name
0
AME
Name
Doc ID 018937 Rev 6
SME
Name
ZDE
PWMS
D4
0
1: Third order NS
0: Fourth order NS
0: Normal FFX operation
1: AM reduction mode FFX operation
0: Submix into left/right disabled
1: Submix into left/right enabled
Setting of 1 enables the automatic zero-detect mute
Setting of 0 disables the automatic zero-detect mute
AME
D3
0
Description
Description
NSBW
Description
Description
D2
0
Reserved
D1
1
STA381BWS
Reserved
D0
0