STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 35

• 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
4.3.9
Figure 13. Stereo link block diagram
Programming of coefficients
The coefficients are expressed in different value ranges and in decimal notation (refer to the
previous paragraphs). In order to be programmed they must be converted into a
[-1, +1) range and in hexadecimal notation
following procedure:
●
●
where CoeffI2CValue is the final decimal value to be converted into hexadecimal notation
while CoeffDecValue is the coefficient value (in decimal notation) to start from.
if CoeffDecValue>0
if CoeffDecValue<0
Ch 0 – Band 0
Ch 0 – Band 0
Ch 0 – Band 1
Ch 0 – Band 1
Ch 1 – Band 0
Ch 1 – Band 0
Ch 1 – Band 1
Ch 1 – Band 1
From mapper
From mapper
From mapper
From mapper
CoeffI2CValue
CoeffI2CValue
Attenuator
Attenuator
Attenuator
Attenuator
Doc ID 018937 Rev 6
=
2
=
24
rnd CoeffDecValue 2
–
rnd CoeffDecValue 2
(
(Table
(
Attenuation
Attenuation
Attenuator
Attenuator
Attenuator
Attenuator
(
Band 0
Band 1
(
Max
Max
11). This can be achieved with the
⁄
6
⁄
) 2
X
X
X
X
×
6
) 2
×
23
)
23
+
+
)
Device overview
Output
Output
Ch 0
Ch 1
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