Manual
CobraNet™ EV-2
33 Rev. 2.1
1 2 34
A
B
C
D
4
321
D
C
B
A
CobraNet (TM) Evaluation Board - CM & serial I/O, and reset circuit.
E
2500 55th Street
Suite 210
Title:
File: EV2_com.Sch
5919-Oct-2004Date: Sheet of
Engineer: Bill Lowe
www.peakaudio.com www.cirrus.com
Size: Number: Revision:A
Cirrus Logic, Inc.
Boulder, CO 80301
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
VCC_+3
HRESET#
HREQ#
HACK#
HCS#
SSI_DOUT0
SSI_DOUT1
SSI_DOUT2
SSI_DOUT3
SSI_DIN0
SSI_DIN1
SSI_DIN2
SSI_DIN3
FS512_OUT
SCI_RXD SCI_TXD
SCI_CLK
ADDR3
RSVD1
RSVD2
RSVD3
RSVD4
MUTE#
AD7
A0
A1
A2
AUX_POWER0 AUX_POWER1
AUX_POWER2 AUX_POWER3
WATCHDOG
HRW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
P510
MMS_CONN40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
P511
MMS_CONN40
HACK#
HRW
HCS#
A[0..2]
A[0..2]
AD[0..7]
AD[0..7]
HRESET#
SW508
SW2349
CR508
1N4148S
R508
10KP1S
+
C508
10A6S
MRESET
MRESET#
VS-
6
T2OUT
7
C1+
1
C2+
4
R2OUT
9
R1IN
13
C1-
3
VS+
2
T2IN
10
T1IN
11
R2IN
8
T1OUT
14
R1OUT
12
C2-
5
U507
MAX232A
C502
.1S
C501
.1S
C503
.1S
C504
.1S
1
6
2
7
3
8
4
9
5
P504
DB9FRA
SCI_TXD
TP500
TPS
AD0
AD1
AD2
AD3
AD4
AD5
AD6
RSVD[1..4]
MUTE#
SSI_DOUT0
SSI_DOUT1
SSI_DOUT2
SSI_DOUT3
SSI_DIN0
SSI_DIN1
SSI_DIN2
SSI_DIN3
MRESET#
RSVD[1..4]
WATCHDOG
B510
.1S
VCC_+3
B511
.1S
B512
.1S
B513
.1S
+5V
+5V
+5V
+
C510
10A6S
+
C511
10A6S
+
C512
10A6S
1
2
U508A
74LVX14S
5
6
U508C
74LVX14S
11
10
U508E
74LVX14S
12
13
U508F
74LVX14S
GND
7
VCC
14
U508G
74LVX14S
VCC_+3
VCC_+3
FS512_OUT
FS1_IN
SSI_CLK_IN
TP501
TPG
SCI_CLK
AUX_POWER[0..3]
AUX_POWER[0..3]
8
9
U508D
74LVX14S
1
6
2
7
3
8
4
9
5
P501
DB9FRA
HREQ#
HEN#
FS512_IN
FS512_IN
B508
.1S
HEN#
B514
.1S
+
C513
10A6S
+5V
VCC_+3
RXD
TXD
SCI_RXD
TXD
GND
GND
GND
GND
GND
GND
GND
GND
GND
ADDR3
RXD
GND
SSI_CLK_IN
FS1_IN
CobraNet Module Connectors
Serial Interface
Reset Circuit
8051 com
CM com
1
2
3
J500
3SRHDR
FS1_IN
REF_CLK_IN
REF_CLK_IN
GND