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STA309B Datasheet(PDF) 61 Page - STMicroelectronics

Part # STA309B
Description  Multichannel digital audio processor with FFX짰
PDF  66 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA309B Datasheet(HTML) 61 Page - STMicroelectronics

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STA309B
Equalization and mixing
Doc ID 022570 Rev 2
61/66
Figure 9.
Typical single-ended driver - power stage configuration
The R pull-down resistor (typical value: 3.3 kOhm) is placed to ensure that there is zero
voltage across the load and the bypass capacitor is discharged when the amplifier is in
tristate mode.
8.5.1
PFCXON: digital pop-free register (0x5F)
PFCXON[I]:
when ‘1’, digital pop free is active on channel i+1 when in binary mode (see
Section 7.2.5: Configuration register E (0x04) on page 28)
when ‘0’, digital pop free is not active on channel i+1
8.5.2
Timing settings
Figure 10.
Pop-free timing diagram
STA309B
STA5xx
y
x
T
U
O
y
x
T
U
O
EAPD
TRI-STATE
INxy
Cbyp
PWRDN
STA309B
STA5xx
y
x
T
U
O
y
x
T
U
O
EAPD
TRI-STATE
INxy
Cbyp
PWRDN
STA309B
STA5xx
y
x
T
U
O
y
x
T
U
O
EAPD
TRI-STATE
INxy
Cbyp
PWRDN
D7
D6
D5
D4
D3
D2
D1
D0
CH8
CH7
CH6
CH5
CH4
CH3
CH2
CH1
11
11
11
1
1
…
EAPD
OUT
GND
VCC/2
LSPDWT
TSPUPT
RAMPTIM
RAMPTIM
…
EAPD
OUT
GND
VCC/2
LSPDWT
TSPUPT
RAMPTIM
RAMPTIM



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