Owner's manual
CobraNet Hardware User’s Manual
Mechanical Drawings and Schematics
DS651UM23 ©Copyright 2005 Cirrus Logic, Inc. 45
Version 2.3
Figure 25. CM-2 RevF Schematic Page 2 of 7
CTRL
B1
GND
AB2
OUT
AB3
VCC
B4
CTRL
A1
CTRL
C1
CTRL
D1
GND
C2
GND
D2
OUT
CD3
VCC
A4
VCC
CD4
U3
24.576 MHz VCXO
A/B
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
8
3Y
9
3B
10
3A
11
4Y
12
4B
13
4A
14
G
15
VCC
16
U4
74LVC157
MCLK_SEL
GND
HRESET_BUF#
MAC_CS#
OE#
WE#
IOWAIT
ADDR[0..19]
DATA[0..15]
MAC_IRQ0
MAC_IRQ1
FLASH_CS#
ADDR[0..19]
DATA[0..15]
AUX_POWER[3..0]
AUX_POWER[3..0]
UART_TX_OE
UART_RXD
UART_TXD
HRW
HDS#
HEN#
HREQ#
HACK#
HADDR[0..3]
HDATA[0..7]
FS1
SSI_CLK
SSI_DOUT[0..3]
SSI_DIN[0..3]
GPIO[0..1]
HEN#
HRW
HDS#
HADDR[0..3]
HDATA[0..7]
HREQ#
HACK#
UART_TX_OE
UART_TXD
UART_RXD
FS1
SSI_CLK
SSI_DIN[0..3]
SSI_DOUT[0..3]
GPIO[0..1]
HRESET#
DATA[0..15]
ADDR[0..19]
HRESET_BUF#
OE#
WE#
FLASH_CS#
flash
flash.sch
REFCLK_IN
WATCHDOG
MUTE#
REFCLK_IN
WATCHDOG
MUTE#
R4
30.9 Ohm, 1%
R5
30.9 Ohm, 1%
C16
0.1 uF
R6
30.9 Ohm, 1%
R7
30.9 Ohm, 1%
C17
0.1 uF
R8
30.9 Ohm, 1%
R9
30.9 Ohm, 1%
C18
0.1 uF
R10
30.9 Ohm, 1%
R11
30.9 Ohm, 1%
C20
0.1 uF
LED Filters go close to the connector.
LED_BUF0
LED_BUF1
LED_BUF2
LED_BUF3
LED_BUF4
LED_BUF5
LED_BUF6
LED_BUF7
LED_BUF[0..7]
LED_CTRL[0..2]
LED_CTRL0
LED_CTRL1
LED_CTRL2
GND
VCC_+3.3
VCC_+3.3
LED_CTRL[0..2]
LED_BUF[0..7]
LED_BUF[0..7]
MCLK_IN
VCXO_OUT
VCXO_OUT
VCXO_OUT
GND
GND
GND
GND
MCLK_INTERNAL
MCLK_OUT
R16
24.9 Ohm, 1%
VCC_+3.3
C19
0.1 uF
R12
3.3K Ohm
VCXO_CTRL
MCLK_IN
VCXO_CTRL
MCLK_SEL
MCLK_INTERNAL
MCLK_OUT
C21
0.1 uF
VCC_+3.3
C22
0.1 uF
VCC_+3.3
C15
0.1 uF
VCC_+3.3
VCC_+3.3
ADDR[0..19]
DATA[0..15]
AUX_POWER[0..3]
HRESET_BUF#
OE#
WE#
MAC_CS#
IOWAIT
MAC_IRQ0
LED_CTRL[0..2]
LED_BUF[0..7]
CLK_25
macphy1
macphy1.sch
ADDR[0..19]
DATA[0..15]
AUX_POWER[0..3]
HRESET_BUF#
OE#
WE#
MAC_CS#
IOWAIT
MAC_IRQ1 LED_BUF[0..7]
CLK_25
macphy2
macphy2.sch
CLK_25
CLK_25
CLK_25
R44
24.9 Ohm, 1%
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
GND
8
CASCADE
9
SCLR#
10
SCK
11
RCK
12
OE#
13
DIN
14
Q0
15
VCC
16
U2
74LV595
R3
10K Ohm
GND
WATCHDOG
MUTE#
MCLK_SEL
VCXO_CTRL
R15
3.3K Ohm
GND
IOWAIT
VCC_+3.3
VCC_+3.3
12
3
4
5
6
7
8
9
10
RN2
10K Ohm, 8x Array
4
5
6
U10B
74LVC32
GND
HRESET#
RSVD[1..5]
RSVD[1..5]
DATA[0..15]
ADDR[0..19]
HRESET_BUF#
OE#
WE#
FLASH_CS#
MAC_CS#
IOWAIT
UART_TX_OE
UART_RXD
UART_TXD
HRW
HDS#
HEN#
HREQ#
HACK#
HADDR[0..3]
HDATA[0..7]
MCLK_INTERNAL
FS1
SSI_CLK
SSI_DOUT[0..3]
SSI_DIN[0..3]
MCLK_SEL
VCXO_CTRL
MAC_IRQ0
MAC_IRQ1
GPIO[0..1]
REFCLK_IN
WATCHDOG
MUTE#
CLK_25
RSVD[1..5]
dsp
dsp.sch