Manual
Rev. 2.1 30
CobraNet™ EV-2
1 2 34
A
B
C
D
4
321
D
C
B
A
CobraNet (TM) Evaluation Board - MPC, SRAM and Hex Switches
E
2500 55th Street
Suite 210
Title:
File: EV2_8051.Sch
2919-Oct-2004Date: Sheet of
Engineer: Bill Lowe
www.peakaudio.com www.cirrus.com
Size: Number: Revision:A
Cirrus Logic, Inc.
Boulder, CO 80301
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ALE
WR#
RD#
TXD
RXD
WATCHDOG
HREQ#
MRESET
HACK#
MUTE#
MRESET
MUTE#
GND
+5V
B200
.1S
C221
10A20S
Select programming mode.
SKT200
SOCKET40
RXD
TXD
HREQ#
AD[0..7]
AD[0..7]
HACK#
WATCHDOG
TP200
TPS
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
RST
9
RXD/P3.0
10
TXD/P3.1
11
INTR0/P3.2
12
INTR1/P3.3
13
TIMER 0/P3.4
14
TIMER 1/P3.5
15
WR/P3.6
16
RD/P3.7
17
XTAL2
18
XTAL1
19
EA
31
ALE
30
PSEN
29
P0.0(AD0)
39
P0.1(AD1)
38
P0.2(AD2)
37
P0.3(AD3)
36
P0.4(AD4)
35
P0.5(AD5)
34
P0.6(AD6)
33
P0.7(AD7)
32
P2.0(A8)
21
P2.1(A9)
22
P2.2(A10)
23
P2.3(A11)
24
P2.4(A12)
25
P2.5(A13)
26
P2.6(A14)
27
P2.7(A15)
28
U200
MCU8051
+5V
GND
TP201
TPG
GND
PSEN#
PSEN#
GND
A14
10
A13
9
A12
8
A11
7
A10
6
A9
5
A8
4
A7
3
A3
25
A2
24
A0
21
A1
23
A6
2
CE
20
OE
22
WE
27
A5
1
D0
11
D1
12
D2
13
D3
15
D4
16
D5
17
D6
18
D7
19
A4
26
U204
7C199-12
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A8
A9
A10
A11
A12
A13
A14
A15
R200
10KP1S
+5V WR#
RD#
+5V
WR#
OUT
3
GND
2
VCC
4
U210
33MHZ OSC
+5V
GND
GND
+5V
B204
.1S
B210
.1S
INIT_IO#
INIT_IO#
PROGRAM#
PROGRAM#
HEX_DATA_OUT
HEX_DATA_IN
HEX_CLOCK
HEX_SHIFT
C
13
B
12
D
14
SER
10
A
11
CLK INH
15
SH/LD
1
CLK
2
E
3
F
4
G
5
H
6
QH
7
QH
9
U201
74HC165
C
13
B
12
D
14
SER
10
A
11
CLK INH
15
SH/LD
1
CLK
2
E
3
F
4
G
5
H
6
QH
7
QH
9
U202
74HC165
GND
GND
+5V
B201
.1S
GND
+5V
B202
.1S
R201
10KP1S
+5V
ALE
RD#
A[8..15]
A[8..15]
MCU_P35
MCU_P35
1
1
4
3
2
2
C
5
8
4
SW202
BCH SW3
1
1
4
3
2
2
C
5
8
4
SW201
BCH SW3
1
1
4
3
2
2
C
5
8
4
SW204
BCH SW3
1
1
4
3
2
2
C
5
8
4
SW203
BCH SW3
10
2
3
4
5
6
7
8
1
9
R206
10KSIP
10
2
3
4
5
6
7
8
1
9
R205
10KSIP
A[0..7]
A[0..7]
GND
R203
10KP1S
+5V
MCU_CLK
MCU_CLK
MCU_P17
MCU_P17
GND
1
2 3
4
= ON
SW200
DIPSW1_SPDT
R204
10KP1S
+5V
R202
51.1P1S