ST SPEAr320, Руководство пользователя, Страница: 27 / 38

UM
101
5
Schematics
Doc
ID
1
8124
R
e
v
1
2
7
/38
Figure 10. Power supply schematic
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
4 4
3 3
2 2
1 1
Spear300 CPU Board
2.3
Power supply
5 8
20 Oct 2009
Place near pin 33
From farthest point
Place near PM6641 Place faraway
From farthest 1.8V point
F
rom f
ar
thest
poi
nt
F
rom f
ar
thest
poi
nt
C94 Place close to IN(4,5) PIN
VTT
VREF
VREF
5V
2.5V 5V
5V
AVCC
1.8V
3.3V
AVCC
1.8V
5V 3.3V 2.5V
5V 1.8V
AVCC AVCC
AVCC
AVCC
AVCC
AVCC
1.2V
3.3V
1.2V 5V 1.8V 5V
1.2V
Rev
Date: Sheet of
Board
Title
Code
Project
Rev
Date: Sheet of
Board
Title
Code
Project
Rev
Date: Sheet of
Board
Title
Code
Project
REF3
FIDUCIAL
REF3
FIDUCIAL
C70
10 uF X5R 10V
C70
10 uF X5R 10V
R48
0 Ohm
R48
0 Ohm
+
C82
47 uF
Ta
n 10V
+
C82
47 uF
Ta
n 10V
C35
0.1 uF X5R 10V C35
0.1 uF X5R 10V
D9
GREEN D9
GREEN
L2
2.2 uH 1.2A L2
2.2 uH 1.2A
R70
27 Kohm
R70
27 Kohm
C93
22 uF Y5V 6.3V
C93
22 uF Y5V 6.3V
B
E
C
Q2
NPN PDTD123Y
B
E
C
Q2
NPN PDTD123Y
1
2
3
R49 56K Ohm R49 56K Ohm
R62
68 Kohm
R62
68 Kohm
R47
0 Ohm
R47
0 Ohm
R50
0 Ohm
R50
0 Ohm
C65
10 uF X5R 10V
C65
10 uF X5R 10V
C90
470 pF X7R
C90
470 pF X7R
C37
0.
1 uF
X5R
10V
C37
0.
1 uF
X5R
10V
+
C85
47 uF Tan 10V
+
C85
47 uF Tan 10V
R73
1K Ohm
R73
1K Ohm
R63
68 Kohm
R63
68 Kohm
C66
10 uF X5R 10V
C66
10 uF X5R 10V
C91
22 nF
X7R
C91
22 nF
X7R
C92
33 nF X7R 50V
C92
33 nF X7R 50V
+
C86
47 uF Tan 10V
+
C86
47 uF Tan 10V
LD1117S25TR
U9
ST LD1117S25TR
LD1117S25TR
U9
ST LD1117S25TR
Vin
3
GND
1
Vout
2
Vout (tab)
4
D5
GREEN D5
GREEN
R41
680 Ohm
R41
680 Ohm
S
T
B
P
120B
U16
ST STBP120C
S
T
B
P
120B
U16
ST STBP120C
NC
1
GND
2
FLT
3
IN
4
IN
5
OUT
6
OUT
7
NC
8
NC
9
EN
10
PAD1
11
PAD2
12
R67
68 Kohm
R67
68 Kohm
C74
10 uF X5R 10V
C74
10 uF X5R 10V
R64
68 Kohm
R64
68 Kohm
R51
0 ohm,NC
R51
0 ohm,NC
+
C84
47 uF Tan 10V
+
C84
47 uF Tan 10V
R6
100 Ohm R6
100 Ohm
R46
0 Ohm
R46
0 Ohm
L3
1 uH 1.7A L3
1 uH 1.7A
A
K
G
D4
S
C
R
TS
420-
B
_1
A
K
G
D4
S
C
R
TS
420-
B
_1
PD1
PADX2-80H60
PD1
PADX2-80H60
1
2
R61
75 Kohm
R61
75 Kohm
C73
10 uF X5R 10V
C73
10 uF X5R 10V
R66
68 Kohm
R66
68 Kohm
R52
0 ohm,NC
R52
0 ohm,NC
C69
10 uF X5R 10V
C69
10 uF X5R 10V
D6
GREEN D6
GREEN
R72
1K Ohm
R72
1K Ohm
R28
4.7 Kohm R28
4.7 Kohm
C87
22 nF
X7R
C87
22 nF
X7R
R65
68 Kohm
R65
68 Kohm
C98
10 uF
X5R
10V
C98
10 uF
X5R
10V
C67
10 uF X5R 10V
C67
10 uF X5R 10V
R60
4.
3 Ohm
R60
4.
3 Ohm
C64
10 uF X5R 10V C64
10 uF X5R 10V
C72
10 uF X5R 10V
C72
10 uF X5R 10V
R7
100 Ohm R7
100 Ohm
D8
GREEN D8
GREEN
C89
2.2 nF X7R C89
2.2 nF X7R
Z1
MMSZ5232BT1
Z1
MMSZ5232BT1
R22
10 Kohm
R22
10 Kohm
DC POWER
2.1mm
J11
DC POWER SOCKET 2.1MM
DC POWER
2.1mm
J11
DC POWER SOCKET 2.1MM
1
2
3
C71
10 uF X5R 10V
C71
10 uF X5R 10V
R71
68 Kohm,NC
R71
68 Kohm,NC
C36
0.
1 uF
X5R
10V
C36
0.
1 uF
X5R
10V
+
C83
47 uF
Ta
n 10V
+
C83
47 uF
Ta
n 10V
R74
1K Ohm
R74
1K Ohm
S
T
P
M
6641
U10
ST PM6641
S
T
P
M
6641
U10
ST PM6641
AGND1
1
SET_SWF
2
VOUT_1S8
3
CSNS
4
SGND1_1S8
5
SGND2_1S8
6
VSW1_1S8
7
VSW2 _1S8
8
VIN1_1S8
9
VIN2_1S8
10
VFB_1S8
11
COMP_1S8
12
SS_1S8
13
SS_1S05
14
COMP_1S05
15
VFB_1S05
16
SGND1_1S05
17
SGND2_1S05
18
VSW1_1S05
19
VSW2_1S05
20
VIN1_1S05
21
VIN2_1S05
22
PG_1S05
23
PG_1S8
24
PG_1S5
25
SS_1S5
26
COMP_1S5
27
VFB_1S5
28
SGND1_1S5
29
SGND2_1S5
30
VSW1_1S5
31
VSW2_1S5
32
VIN_1S5
33
EN_1S05
34
EN_1S5
35
EN_VTT
36
EN_1S8
37
AGND2
38
SET_PH1
39
AGND3
40
AVCC
41
VTTGND
42
VTT
43
LDOIN
44
VTTREF
45
DSCG
46
VTTFB
47
VCC
48
THERMAL
49
R75
330 Ohm
R75
330 Ohm
R57
150 Kohm
R57
150 Kohm
C88
22 nF
X7R
C88
22 nF
X7R
R68
15 Kohm
R68
15 Kohm
REF4
FIDUCIAL
REF4
FIDUCIAL
C68
10 uF X5R 10V
C68
10 uF X5R 10V
C38
0.1 uF X5R 10V C38
0.1 uF X5R 10V
C63
10 uF
X5R
10V
C63
10 uF
X5R
10V
R59
4.3 Ohm R59
4.3 Ohm
D7
GREEN D7
GREEN
R69
47 Kohm
R69
47 Kohm
B
E
C
Q3
NPN PDTD123Y
B
E
C
Q3
NPN PDTD123Y
1
2
3
L1
2.2 uH 1.2A L1
2.2 uH 1.2A
R56
150 Kohm
R56
150 Kohm