CobraNet Hardware User’s Manual
Mechanical Drawings and Schematics
DS651UM21
©
Copyright 2004 Cirrus Logic, Inc.
45
Version 2.1
Figure 25. CM-2 RevE Schematic Page 4 of 7
VCXO_
CTRL
1
MCLK_
SEL
2
DBDA
3
DBCK
4
NC
5
NC
6
NC
7
DA
O_
MCLK
8
TEST
9
VDDD
10
HS3
11
NC
12
GND
13
NC
14
D
A
O
1
_
D
AT
A3
15
D
A
O
1
_
D
AT
A2
/H
S
2
16
D
A
O
1
_
D
AT
A1
/H
S
1
17
VDDIO
18
D
A
O
1
_
D
AT
A0
/H
S
0
19
DA
O1
_
S
CLK
20
GND
21
DA
O1
_
L
RCLK
22
U
A
R
T_
TX_
OE
23
VDDD
24
U
A
R
T_
TXD
25
UAR
T
_
R
X
D
26
GND
27
NC
28
VDDIO
33
GND
36
EXT_
WE#
38
VDDIO
44
GND
47
NC
50
NC
51
NC
52
NC
53
VDDD
54
S
D
_A
12/
E
X
T
_
A
1
1
55
S
D
_A
11/
E
X
T
_
A
1
0
56
GND
57
S
D
_A
9/
E
X
T
_
A
9
58
S
D
_A
8/
E
X
T
_
A
8
59
VDDIO
60
S
D
_A
7/
E
X
T
_
A
7
61
S
D
_A
6/
E
X
T
_
A
6
62
GND
63
S
D
_A
5/
E
X
T
_
A
5
64
EXT_
CS2
#
65
VDDD
66
S
D
_A
4/
E
X
T
_
A
4
67
S
D
_A
3/
E
X
T
_
A
3
68
GND
69
S
D
_A
2/
E
X
T
_
A
2
70
S
D
_A
1/
E
X
T
_
A
1
71
S
D
_A
0/
E
X
T
_
A
0
72
VDDIO
73
S
D
_A
10/
E
X
T
_
A
1
2
74
S
D
_A
14/
E
X
T
_
A
1
3
75
GND
76
S
D
_A
13/
E
X
T
_
A
1
4
77
NC
78
NC
79
NC
80
NC
81
EXT_
A
1
5
82
VDDD
83
EXT_
A
1
6
84
EXT_
A
1
7
85
GND
86
EXT_
A
1
8
87
EXT_
A
1
9
88
EXT_
OE#
89
EXT_
CS1
#
90
VDDIO
91
MU
TE#
92
RESET#
93
GND
94
WA
TCHDOG_
OU
T
95
IOWA
IT
96
REFCLK_
IN
97
VDDD
98
GP
IO0
99
GP
IO1
100
GND
101
HA
CK#
102
HDS#
103
HEN#
104
HA
DDR3
105
HA
DDR2
106
HR/W#
107
GP
IO2
108
HA
DDR1
109
HA
DDR0
110
HDA
TA
7
111
HDA
TA
6
112
VDDIO
113
HDA
TA
5
114
HDA
TA
4
115
GND
116
HDA
TA
3
117
HDA
TA
2
118
VDDD
119
HDA
TA
1
120
HDA
TA
0
121
GND
122
X
T
AL
_
O
UT
123
XTI
125
XTO
124
GND_A
126
FILT2
127
FILT1
128
VDD_A
129
VDDD
130
D
A
I1
_
D
AT
A3
131
D
A
I1
_
D
AT
A2
132
GND
133
D
A
I1
_
D
AT
A1
134
D
A
I1
_
D
AT
A0
135
VDDIO
136
D
A
I1_S
C
L
K
137
D
A
I1_L
R
C
L
K
138
GND
139
HREQ#
140
NC
141
NC
142
IRQ1
143
IRQ2
144
S
D
_D
7/
E
X
T
_
D
1
5
29
S
D
_D
6/
E
X
T
_
D
1
4
30
S
D
_D
5/
E
X
T
_
D
1
3
31
S
D
_D
4/
E
X
T
_
D
1
2
32
S
D
_D
3/
E
X
T
_
D
1
1
34
S
D
_D
2/
E
X
T
_
D
1
0
35
S
D
_D
1/
E
X
T
_
D
9
37
S
D
_D
0/
E
X
T
_
D
8
39
S
D
_D
15/
E
X
T
_
D
7
40
S
D
_D
14/
E
X
T
_
D
6
41
S
D
_D
13/
E
X
T
_
D
5
42
S
D
_D
12/
E
X
T
_
D
4
43
S
D
_D
11/
E
X
T
_
D
3
45
S
D
_D
10/
E
X
T
_
D
2
46
S
D
_D
9/
E
X
T
_
D
1
48
S
D
_D
8/
E
X
T
_
D
0
49
U6
C
S
18101
VCC_
+
1
.8
VCC_
+
3
.3
HRESET_
BU
F#
OE#
WE#
FLA
SH_
CS#
MA
C_
CS#
IOWA
IT
DA
TA
0
DA
TA
1
DA
TA
2
DA
TA
3
DA
TA
4
DA
TA
5
DA
TA
6
DA
TA
7
DA
TA
8
DA
TA
9
DA
TA
1
0
DA
TA
1
1
DA
TA
1
2
DA
TA
1
3
DA
TA
1
4
DA
TA
1
5
A
DDR0
A
DDR1
A
DDR2
A
DDR3
A
DDR4
A
DDR5
A
DDR6
A
DDR7
A
DDR8
A
DDR9
A
DDR1
0
A
DDR1
1
A
DDR1
2
A
DDR1
3
A
DDR1
4
A
DDR1
5
A
DDR1
6
A
DDR1
7
A
DDR1
8
A
DDR1
9
U
A
R
T_
TXD
UAR
T
_
R
X
D
U
A
R
T_
TX_
OE
HDA
TA
0
HDA
TA
1
HDA
TA
2
HDA
TA
3
HDA
TA
4
HDA
TA
5
HDA
TA
6
HDA
TA
7
HA
DDR0
HA
DDR1
HA
DDR2
HA
DDR3
HRW
HDS#
HREQ#
HA
CK#
HEN#
MCLK_
INTERNA
L
FS1
SSI_
CLK
SSI_
DIN0
SSI_
DIN1
SSI_
DIN2
SSI_
DIN3
SSI_
DOU
T0
SSI_
DOU
T1
SSI_
DOU
T2
SSI_
DOU
T3
RSVD1
RSVD2
RSVD4
RSVD3
VCXO_
CTRL
MA
C_
IRQ0
MA
C_
IRQ1
MCLK_
SEL
D
A
T
A
[0..15]
A
DDR[
0
..
1
9
]
HRESET_
BU
F#
OE#
WE#
FLA
SH_
CS#
MA
C_
CS#
IOWA
IT
C4
1
22 pF
C4
0
22 pF
SSI_
DOU
T[
0
..
3
]
SSI_
DIN[
0
..
3
]
HA
DDR[
0
..
3
]
HDA
TA
[0
..
7
]
D
A
T
A
[0..15]
A
DDR[
0
..
1
9
]
U
A
R
T_
TX_
OE
UAR
T
_
R
X
D
U
A
R
T_
TXD
HRW
HDS#
HEN#
HREQ#
HA
CK#
HA
DDR[
0
..
3
]
HDA
TA
[0
..
7
]
MCLK_
INTERNA
L
FS1
SSI_
CLK
SSI_
DOU
T[
0
..
3
]
SSI_
DIN[
0
..
3
]
MCLK_
SEL
VCXO_
CTRL
MA
C_
IRQ0
MA
C_
IRQ1
GP
IO0
GP
IO1
G
P
IO
[0..1]
G
P
IO
[0..1]
REFCLK_
IN
WA
TCHDOG
MU
TE#
REFCLK_
IN
WA
TCHDOG
MU
TE#
VCC_
+
3
.3
VCC_
+
1
.8
VCC_
+
1
.8
C2
4
0.1 uF
FB1
F
B
E
A
D
, 68 O
h
m
@
100 M
H
z
C4
10 uF
, X
5
R
, 6.3 V
o
lt
s
C5
10 uF
, X
5
R
, 6.3 V
o
lt
s
VCC_
DSP
A
R13
R14
3.3K
O
h
m
VCC_
+
3
.3
VCC_
+
3
.3
GND
DEBU
G_
CLK
DEBU
G_
DA
TA
D
ebug P
o
rt
RSVD1
SSI_
DOU
T0
SSI_
DOU
T1
SSI_
DOU
T2
HS0
- Down
HS1
- U
p
HS2
- Down
HS3
- Down
1
2
3
4
5
6
7
8
CN3
0.1 uF
, 4x
A
rray
1
2
3
4
5
6
7
8
CN2
0.1 uF
, 4x
A
rray
VCC_
+
3
.3
VCC_
+
1
.8
1
2
3
4
5
6
7
8
CN5
0.1 uF
, 4x
A
rray
1
2
3
4
5
6
7
8
CN4
0.1 uF
, 4x
A
rray
VCC_
+
1
.8
1
2
3
4
5
6
7
8
CN1
0.1 uF
, 4x
A
rray
GND
C4
3
1000 pF
, C
O
G
R4
1
5.90K
O
h
m
C4
2
2.2 uF
, X
7
R
, 1206
C
L
K
_25
C
L
K
_25
1
2
Y1
25 M
H
z
VCC_
+
3
.3
F
S
1_J
S
S
I_C
L
K
_J
C4
4
0.1 uF
R4
5
24.9 O
h
m
, 1%
VCC_
+
3
.3
1
2
3
4
5
6
7
8
CN1
2
0.1 uF
, 4x
A
rray
R5
3
R5
4
24.9 O
h
m
, 1%
F
S
1_J
S
S
I_C
L
K
_J
R43
R47
R49
R51
3.3K
O
h
m
R42
R46
R48
R50
3.3K
O
h
m
D
ef
aul
t B
o
o
t M
o
de
:
T
h
es
e pul
lups and pul
ld
o
w
ns are
use
d
to
se
t the
bo
o
t m
o
de
o
f the
D
S
P. T
h
e
ap
p
rop
ri
at
e r
es
is
tor
is
in
st
alled
t
o
s
elect
the
bo
o
t m
o
de
.
1
2
3
4
JP
1
CON4
R5
5
1 M
eg
O
hm
RSVD[
1
..
5
]
RSVD[
1
..
5
]
RSVD[
1
..
5
]
RSVD5