48 ©Copyright 2005 Cirrus Logic, Inc. DS651UM23
Version 2.3
CobraNet Hardware User’s Manual
Mechanical Drawings and Schematics
Figure 28. CM-2 RevF Schematic Page 5 of 7
IOR#
1
IOW#
2
AEN
3
IOWAIT
4
DVDD
5
SD0
6
SD1
7
SD2
8
SD3
9
SD4
10
SD5
11
SD6
12
SD7
13
RST
14
DGND
15
TEST1
16
TEST2
17
TEST3
18
TEST4
19
DVDD
20
X2_25M
21
X1_25M
22
DGND
23
SD
24
BGGND
25
BGRES
26
AVDD
27
AVDD
28
RXI+
29
RXI-
30
AGND
31
AGND
32
TXO+
33
TXO-
34
AVDD
35
DVDD
36
LINK_I
37
RXD0
38
RXD1
39
RXD2
40
RXD3
41
DGND
42
CRS
43
COL
44
RX_DV
45
RX_ER
46
RX_CLK
47
TEST5
48
TX_CLK
49
TXD0
50
TXD1
51
TXD2
52
TXD3
53
TX_EN
54
DVDD
55
MDIO
56
MDC
57
DGND
58
CLK20MO
59
SPEED#
60
DUP#
61
LINKACT#
62
DGND
63
EEDI
64
EEDO
65
EECK
66
EECS
67
GPIO0
68
GPIO1
69
GPIO2
70
GPIO3
71
DVDD
72
DVDD
73
NC
74
NC
75
DGND
76
NC
77
LINK_O
78
WAKEUP
79
PW_RST#
80
DGND
81
SD15
82
SD14
83
SD13
84
SD12
85
SD11
86
SD10
87
SD9
88
SD8
89
DVDD
90
IO16
91
CMD
92
SA4
93
SA5
94
SA6
95
SA7
96
SA8
97
SA9
98
DGND
99
INT
100
U7
DM9000
R25
6.8K Ohm, 1%
Keep res close to chip pins.
VCC_PHY1VCC_+3.3
VCC_+3.3
VCC_+3.3
ADDR0
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
ADDR[0..19]
DATA[0..15]
ADDR[0..19]
DATA[0..15]
HRESET_BUF#
VCC_+3.3
GND
OE#
WE#
MAC_CS#
IOWAIT
HRESET_BUF#
OE#
WE#
MAC_CS#
IOWAIT
MAC_IRQ0
MAC_IRQ0
ADDR2
ADDR3
ADDR1
ADDR4
LED_CTRL[0..2]
LED_CTRL[0..2]
VCC_+3.3 VCC_PHY1
C46
0.01 uF
FB2
FBEAD, 68 Ohm @ 100 MHz
C6
10 uF, X5R, 6.3 Volts
C7
10 uF, X5R, 6.3 Volts
VCC_+3.3 VCC_PHY1
1
2
3
45
6
7
8
CN8
0.1 uF, 4x Array
1
2
3
45
6
7
8
CN6
0.1 uF, 4x Array
VCC_+3.3
1
2
3
45
6
7
8
CN7
0.1 uF, 4x Array
GND
12
3
4
5
6
7
8
9
10
RN7
3.3K Ohm, 8x Array
GND
CLK_25
CLK_25
1
2
3
U10A
74LVC32
VCC
14
GND
7
U10E
74LVC32
MAC_CS#
VCC_+3.3
C51
0.1 uF
VCC_+3.3
LED_CTRL0
LED_CTRL1
LED_CTRL2
1
2
3
4
5
6
7
8
S1
S2
L1
L2
L3
L4
J5
RJ45
7
8
9
10
11
12 13
14
15
16
17
18TXD+
TXD-
TXD+
TXD-
RXD+
RXD+
RXD- RXD-
T1B
H2006A
R19
49.9 Ohm, 1%
R20
49.9 Ohm, 1%
C26
0.1 uF
C27
0.1 uF
GND
GNDVCC_PHY1
VCC_PHY1
R17R18
49.9 Ohm, 1%
C25
0.1 uF
C28
0.1 uF
GND
R28
75 Ohm, 1%
R27
C48
0.01 uF, 2KV
SHIELD
SHIELD
SHIELD
LED_BUF[0..7]
LED_BUF[0..7]
R29
R30
R31
R32
75 Ohm, 1%
FB3
FB4
FB5
FB6
FBEAD, 68 Ohm @ 100 MHz
AUX_POWER0
AUX_POWER1
AUX_POWER2
AUX_POWER3
AUX_POWER[0..3]
AUX_POWER[0..3]
LED_BUF0
LED_BUF1
LED_BUF2
LED_BUF3
Note: See Text Warning
Warning: Failure to properly install and
configure the aux. Ethernet signals can result in
very bad things (i.e., fire, smoke, bad hair days).
If power is supplied via the RJ-45 connector then
only the ferrite beads are installed (not the
resistors). If power is not supplied via the RJ-45
then the resistors are installed and the beads are
not.
