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IC Data Sheets
8.
8.3
Diagram
10-7-10 Audio AMPILIFER_STA381BW
, B11, STA381BWTR (IC U601)
Figure 8-5 Internal block diagram and pin configuration
19621_301.eps
Block diagram
Pinning information
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
VCC_REG
VSS_REG
OUT2B
GND2
VCC2
OUT2A
OUT1B
VCC1
GND1
OUT1A
VDD_REG
GND_REG
MCLK
AGNDPLL
VREGFILT
TWARNEXT/FFX4B
EAPD/FFX4A
FFX3B
FFX3A
GNDDIG1
VDDDIG1
VDD3V3CHP
CPP
GNDPSUB
1
3
14
15
16
17
1
8
19
20
21
22
2
3
24
4
8
47
46
45
44
4
3
42
41
40
3
9
38
3
7
F
3
X_FIL
T
F
3
XL
F
3
XR
LINEINL
LINEINR
LINEHPOUT_L
LINEHPOUT_R
GND
A
S
OFTMUTE
VDD
3
V
3
CPV
SS
CPM
VDDDIG2
GNDDIG2
TE
S
TMODE
S
A
S
CL
S
DA
INTLINE
PWDN
RE
S
ET
S
DI
LRCKI
BICKI
STA381BW
PWDN
TESTMODE
LRCKI
BICKI
4
Half
Bridges
OUT 1A
OUT 1B
OUT 2A
OUT 2B
FFX3A
FFX3B
MCLK
SDI
LINEINL
LINEINR
LINEHPOUT_L
LINEHPOUT_R
SDA
SCL
IIC
CPVSS
CPP
FFX4A
FFX4B
GND
_REG
SOFT_MUTE
2
x
GND
2 x
VCC
VDD_REG
GNDPSUB
2 x
VDD
DIG
2 x
GNDD
IG
VREGFIL
T
AGNDPLL
VCC_REG
VSS_REG
CPM
2.1 Channel
Audio Processor
STAudioFx
TM
STSpeakerSafe
TM
Parametric EQ
Volume
Bass and Treble
Speaker Compensation
Stereo Widening
SA
RESET
INTLINE
GNDA
Headphone
(2Vrms)
PLL
Negative
Charge
Pump
-3.3V
Control logic
&
Protections
RE
G_M3
VDD
3
V3CHP
F3X_FIL
T
FFX
TM
Modulator
Binary
Ternary
F3XL
F3XR
STA381BW