STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 85

• 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
6.25
6.26
6.26.1
6.26.2
Fault-detect recovery constant registers (addr 0x3C - 0x3D)
The FDRC bits specify the 16-bit fault-detect recovery time delay. When FAULT is asserted,
the TRISTATE output is immediately asserted low and held low for the time period specified
by this constant. A constant value of 0x0001 in this register is approximately 0.083 ms. The
default value of 0x300C gives approximately 1 sec.
0x0000 is a reserved value.
Extended configuration register (addr 0x47)
The extended configuration register provides access to biquad 5, 6 and 7.
Extended post-scale range
Table 74.
Post-scale is an attenuation by default. When PS48DB is set to 1, a 48-dB offset is applied
to the coefficient RAM value, so post-scale can act as a gain too.
Extended attack rate
The attack rate shown in
on both limiters.
Table 75.
Reserved
FDRC15
FDRC7
D7
D7
D7
0
0
0
PS48DB
XAR1
0
1
0
1
Extended post-scale range
Extended attack rate, limiter 1
Reserved
FDRC14
FDRC6
D6
D6
D6
0
0
Table 67
FDRC13
PS48DB
FDRC5
Post-scale value is applied as defined in the coefficient RAM
Post-scale value is applied with a +48 dB offset with respect to the
coefficient RAM value
Limiter1 attack rate is configured using
Limiter1 attack rate is 8 dB/ms
D5
D5
D5
1
0
0
Doc ID 018937 Rev 6
can be extended to provide up to an 8 dB/ms attack rate
FDRC12
FDRC4
XAR1
D4
D4
D4
1
0
0
FDRC11
FDRC3
XAR2
D3
D3
D3
0
1
0
Mode
Mode
Register description: New Map
FDRC10
FDRC2
BQ5
Table 67
D2
D2
D2
0
1
1
FDRC9
FDRC1
BQ6
D1
D1
D1
0
0
1
FDRC8
FDRC0
BQ7
D0
D0
D0
0
0
1
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