48
©
Copyright 2004 Cirrus Logic, Inc.
DS651UM21
Version 2.1
CobraNet Hardware User’s Manual
Mechanical Drawings and Schematics
Figure 28. CM-2 RevE Schematic Page 7 of 7
HRESET#
GND
HEN#
GND
HRW
GND
HREQ#
GND
HA
CK#
GND
HDS#
GND
SSI_
CLK
SSI_
DOU
T0
GND
SSI_
DOU
T1
GND
SSI_
DOU
T2
GND
SSI_
DOU
T3
GND
SSI_
DIN0
GND
SSI_
DIN1
GND
SSI_
DIN2
GND
SSI_
DIN3
GND
FS1
GND
MCLK_
OU
T
GND
MCLK_
IN
GND
REFCLK_
IN
UAR
T
_
R
X
D
GND
U
A
R
T_
TXD
VCC_
+
3
.3
U
A
R
T_
TX_
OE
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
HDA
TA
0
VCC_
+
3
.3
HDA
TA
1
VCC_
+
3
.3
HDA
TA
2
VCC_
+
3
.3
HDA
TA
3
HDA
TA
4
VCC_
+
3
.3
HDA
TA
5
VCC_
+
3
.3
HDA
TA
6
VCC_
+
3
.3
HDA
TA
7
HRESET#
HA
DDR0
HEN#
HA
DDR1
HRW
HA
DDR2
HREQ#
HRESET#
HA
CK#
HA
CK#
HDS#
HDA
TA
[0
..
7
]
SSI_
CLK
HA
DDR[
0
..
3
]
SSI_
DOU
T0
SSI_
DOU
T1
SSI_
DOU
T2
SSI_
DOU
T3
SSI_
DIN0
SSI_
DIN1
SSI_
DIN2
SSI_
DIN3
FS1
MCLK_
OU
T
MCLK_
IN
REFCLK_
IN
UAR
T
_
R
X
D
U
A
R
T_
TXD
U
A
RT_
TX_
O
E
HA
DDR3
MU
TE#
VCC_
+
5
VCC_
+
5
HRW
HDS#
HEN#
HREQ#
HDA
TA
[0
..
7
]
HA
DDR[
0
..
3
]
SSI_
DOU
T[
0
..
3
]
SSI_
DIN[
0
..
3
]
HDA
TA
0
SSI_
DOU
T[
0
..
3
]
HDA
TA
1
SSI_
DIN[
0
..
3
]
HDA
TA
2
SSI_
CLK
HDA
TA
3
MCLK_
OU
T
HDA
TA
4
FS1
HDA
TA
5
U
A
R
T_
TXD
HDA
TA
6
UAR
T
_
R
X
D
HDA
TA
7
MCLK_
IN
HA
DDR0
REFCLK_
IN
HA
DDR1
U
A
R
T_
TX_
OE
HA
DDR2
VCC_
+
3
.3
C3
3
0.1 uF
C3
4
0.1 uF
C3
5
0.1 uF
C3
6
0.1 uF
C3
7
0.1 uF
C3
8
0.1 uF
VCC_
+
5
C3
9
0.1 uF
A
C
S
igna
l Re
tu
rn
P
at
h
Ca
ps
VCC_
+
3
.3
P
o
w
er
D
ec
oupl
ing C
aps
A
U
X_
P
OWER0
A
U
X_
P
OWER1
A
U
X_
P
OWER2
A
U
X_
P
OWER3
AUX
_
P
O
W
E
R
0
AUX
_
P
O
W
E
R
1
AUX
_
P
O
W
E
R
2
AUX
_
P
O
W
E
R
3
AUX
_
P
O
W
E
R
[0
..
3
]
AUX
_
P
O
W
E
R
[0
..
3
]
WA
TCHDOG
WA
TCHDOG
WA
TCHDOG
MU
TE#
MU
TE#
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
A1
2
A1
3
A1
4
A1
5
A1
6
A1
7
A1
8
A1
9
A2
0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
0
B1
1
B1
2
B1
3
B1
4
B1
5
B1
6
B1
7
B1
8
B1
9
B2
0
J3
CNM_
CONN4
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
A1
2
A1
3
A1
4
A1
5
A1
6
A1
7
A1
8
A1
9
A2
0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
0
B1
1
B1
2
B1
3
B1
4
B1
5
B1
6
B1
7
B1
8
B1
9
B2
0
J1
CNM_
CONN4
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
A1
2
A1
3
A1
4
A1
5
A1
6
A1
7
A1
8
A1
9
A2
0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
0
B1
1
B1
2
B1
3
B1
4
B1
5
B1
6
B1
7
B1
8
B1
9
B2
0
J4
CNM_
CONN4
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
A1
2
A1
3
A1
4
A1
5
A1
6
A1
7
A1
8
A1
9
A2
0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
0
B1
1
B1
2
B1
3
B1
4
B1
5
B1
6
B1
7
B1
8
B1
9
B2
0
J2
CNM_
CONN4
0
N
o
te
: S
imi
la
r A
C
si
gna
l r
et
u
rn
pa
th
c
ap
s must
be
i
n
cl
ude
d on t
h
e mot
he
rboa
rd
ne
ar
t
h
e c
onne
ct
or
.
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
VCC_
+
3
.3
HRESET#
HEN#
HRW
HREQ#
HA
CK#
HDS#
SSI_
CLK
SSI_
DOU
T0
SSI_
DOU
T1
SSI_
DOU
T2
SSI_
DOU
T3
SSI_
DIN0
SSI_
DIN1
SSI_
DIN2
SSI_
DIN3
FS1
MCLK_
OU
T
MCLK_
IN
REFCLK_
IN
UAR
T
_
R
X
D
UAR
T
_
T
X
D
U
A
R
T_
TX_
OE
HA
DDR3
MU
TE#
VCC_
+
5
VCC_
+
5
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
AUX
_
P
O
W
E
R
0
AUX
_
P
O
W
E
R
1
AUX
_
P
O
W
E
R
2
AUX
_
P
O
W
E
R
3
WA
TCHDOG
1
M3
MOU
NTING
1
M4
MOU
NTING
1
M2
MOU
NTING
1
M1
MOU
NTING
R4
0
0 O
h
m
R3
9
0 O
h
m
Th
es
e t
w
o mou
n
tin
g h
o
les
a
re loca
te
d
a
t t
h
e
"
b
ac
k"
o
f the
C
M
-2
, ne
ar the
m
ai
n
i
n
te
rf
ac
e
con
n
ect
or
s.
T
h
es
e tw
o
m
o
unti
ng
ho
le
s are
l
o
ca
te
d ne
ar
the
f
ro
n
t pane
l o
f the
C
M
-2
.
C1
0
10 uF
, X
5
R
, 6.3 V
o
lt
s
C1
1
10 uF
, X
5
R
, 6.3 V
o
lt
s
C1
2
10 uF
, X
5
R
, 6.3 V
o
lt
s
C1
3
10 uF
, X
5
R
, 6.3 V
o
lt
s
C1
4
10 uF
, X
5
R
, 6.3 V
o
lt
s
RSVD3
RSVD3
RSVD1
RSVD2
RSVD4
RSVD1
RSVD2
RSVD4
HA
DDR3
HA
DDR0
HA
DDR1
HA
DDR2
HDA
TA
0
HDA
TA
1
HDA
TA
2
HDA
TA
3
HDA
TA
4
HDA
TA
5
HDA
TA
6
HDA
TA
7
HEN#
HDS#
HA
CK#
HREQ#
U
A
R
T_
TX_
OE
U
A
R
T_
TXD
UAR
T
_
R
X
D
REFCLK_
IN
GND
SSI_
DOU
T3
RSVD2
RSVD4
RSVD5
SSI_
DIN0
SSI_
DIN1
SSI_
DIN2
SSI_
DIN3
RSVD3
FS1
SSI_
CLK
N
o
te
: Pul
l-
ups/
do
w
ns o
n
S
S
I_D
O
U
T
[0..4] are
l
o
ca
te
d o
n
the
D
S
P sc
he
m
ati
c pag
e.
MCLK_
IN
Th
es
e p
u
llu
p
s/d
own
s a
re u
sed
t
o
a
ss
u
re
a
v
alid
logic lev
el if a
s
ign
al
is
tr
i-s
ta
te
d
or
n
o
t con
n
ect
ed
. In
s
o
me s
it
u
at
ion
s,
t
h
es
e ma
y n
o
t b
e r
equ
ir
ed
.
C5
0
0.01 uF
, 2K
V
SHIELD
P
lace near t
h
e Et
hernet
connect
ors
.
1
2
3
4
5
6
7
8
9
10
RN3
10K
O
h
m
, 8x
A
rray
1
2
3
4
5
6
7
8
9
10
RN4
10K
O
h
m
, 8x
A
rray
1
2
3
4
5
6
7
8
9
10
RN5
10K
O
h
m
, 8x
A
rray
1
2
3
4
5
6
7
8
9
10
RN6
10K
O
h
m
, 8x
A
rray
GND
GND
GND
GND
GND
VCC_
+
3
.3
VCC_
+
3
.3
HA
DDR3
RSVD[
1
..
5
]
RSVD[
1
..
5
]
RSVD1
RSVD2
RSVD3
RSVD4
RSVD5