STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 95

• 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

STA381BWS
Table 89.
The thresholds and hysteresis table above can be overridden and the low-level threshold
and high-level threshold can be set by the MTH[21:0] bits.
To activate the manual thresholds the FINETH bit has to be set to ‘1’.
To configure the low threshold, the WTHL bit must be set to ‘1’ so that any write operation to
the MTH bits will set the low threshold.
To configure the low threshold, the WTHH bit must be set to ‘1’ so that any write operation to
the MTH bits will set the low threshold.
If the zero-mute block does not detect mute, it will mute the output when the current RMS
value falls below the low threshold.
If the zero-mute block does not detect mute, it will unmute the output when the current RMS
value rises above the high threshold.
Table 90.
ReservedT
D7
D7
D7
0
0
0
HSEL[1:0]
00
01
10
11
Zero-detect hysteresis
Manual threshold register 0x3F, 0x40 and 0x6F
Reserved
D6
D6
D6
0
0
0
D5
D5
D5
0
0
0
Doc ID 018937 Rev 6
D4
D4
D4
0
0
0
Equivalent input level hysteresis(dB)
MTH[15:8]
MTH[7:0]
D3
D3
D3
0
0
0
MTH[21:16]
3
4
5
6
Register description: New Map
D2
D2
D2
0
0
0
D1
D1
D1
0
0
0
D0
D0
D0
0
0
0
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