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5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+5Vi
+3.3VA
+5A
Vref
+3.3V
+3.3Vu
+3.3Vu
GND-USB
VBUS2-SW
USB2514-CLKIN-24MHz
PCM2901-CLKIN-12MHz
Title
Size Document Number Rev
Date: Sheet
of
<Doc> 12-4.1
Power Supply & Reset
C
25Wednesday, September 14, 2011
4/19/2011
Reset Switch Assembly Jack
To PK-232sc +13.5 VDC
To USB audio codec
To isolated +5Vi digital circuits including 74xx ICs
From VBUS Audio
To isolated +5VA Analog circuits
+2.5VDC audio reference
USB audio circuits
12.0 MHz
24.0 MHz To USB2514 clk in
To PCM2901clk in
C26
.01uF
C46
0.1uF
R23
10k
C42
0.1uF
R92 0
C50
1.0uF/10V
U29
74AUP1G74
D
2
CLK
1
Q
5
Q
3
VCC
8
PRE
7
GND
4
CLR
6
R158 0
+
C36
10uF
C37
0.1uF
R159 0
C49
.01uF
C32
1.0uF/10V
+
C35
100uF
C33
.01uF
U6 LP38692MP-3.3
Ven
1
NC
2
Vout
3
Vin
4
GND
5
R22
0
C31
1.0uF/10V
JP7
Header 2
1
2
JP6
Header 2
1
2
U7
LM7805CT
IN
1
OUT
3
GND
2
U27
FXO-HC735-24MHZ
VCC
4
EN
1
OUT
3
GND
2
+
C111
100uF
C41
0.1uF
C48
.01uF
R21 10k
+
C110
100uF
D1
S1GB
1 2
R150 0
C21
.01uF
R134 10k
C34
1nF
U10 LP38692MP-2.5
Ven
1
NC
2
Vout
3
Vin
4
GND
5
+
C44
100uF
C45
0.1uF
L3
BEAD FERRITE/SM
U9
LM7805CT
IN
1
OUT
3
GND
2
18


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