Figure 14.
Reset, JTAG, Nexus level 3+ support, Nexus interface and crystal oscillator
EVTI
PORST
EXTAL
XTAL
EVB-EXTAL
ESR0
PORST
RST-MCU
EVB-EXTAL
OSC-MOD
EXTAL-SMA
RST-SW
PORST
ESR0
EVTO
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
3.3V_SR
VDD_HV_IO_MAIN
3.3V_SR
XTAL
EXTAL
ESR0
PORST
RST-SW
PORST
TDI
TDO
TCK
TMS
ESR0
TDI
TCK
PORST
TMS
TDO
EVTI
EVTI
EVTO
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
(MCU Crystal Input)
1-2 CLOSED
DEFAULT
1-2 CLOSED
DEFAULT
default OPEN
1-2 CLOSED
DEFAULT
(MCU Crystal Output)
GND
default CLOSED
default CLOSED
default CLOSED
Connect XTAL jumper to GND when driving EXTAL from
Oscilaltor Module or External Source (PLL Bypass Mode)
REMOVE XTAL jumper when driving EXTAL from
Oscillator Module or External Source (PLL Enabled)
Note - Internal
Pull-Up on Pin 1
SMA style
Connector
USER RESET LED
Note - External 3.3V
egulator MUST be
enabled when using
oscillator module
MCU RESET LED
RESET
External Clock Input
Nexus interface
Jtag interface
Nexus level 3+ support
TDI, TDO, TCK, TMS are not connected to daughter card.
PORST, ESR0, EVTI and EVTO
are connected to daughtercard
LVDS signals are not routed to motherboard.
JTAG signals are not routed to motherboard.
EVT signals have the option of adding a jumper on
daughtercard to route signals to motherboard.
JTAG Connector
NOT MOUNTED
NOT MOUNTED
Place CAPS as close to connector pins as
possible but do NOT fit cap C48 at board assembly.
NOT MOUNTED
NOT MOUNTED
EVTO
EVTO
EVTI
GND
GND
NOT MOUNTED
2
1
3
STRIP3PM
J15
0R
0603
1/10W
R15
1
2
40MHz
NX5032GA
XT1
0603
50V
10pF DNP
C36
0603
COG/NP0
50V
10pF DNP
0603
C37
COG/NP0
100nF
50V
X7R
C39
STRIP2PM
J17
2
1
3
J19
STRIP3PM
100R
1/10W
0603
R27
1
EN
2
GND OUT
3
+Vs
4
8MHz
7x5
OSC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
N2514-6002RB
J12
0R DNP
1/10W
0603
R7
0603
27pF
50V
C35
COG/NP0
0603
50V
47pF DNP
C34
COG/NP0
TX0P
1
TX0N
3
gnd
5
TX1P
7
TX1N
9
gnd
11
TX2P
13
TX2N
15
+V
2
4
TCK
6
TMS
8
TDI
1
TDO
12
0
JCOMP
14
EVTI1
16
EVTI0
18
EVTO0
20
PORST
22
ESR0
24
gnd
26
CLKP
28
CLKN
30
21
TX3P
25
gnd
31
gnd
27
n.c.
19
17
gnd
29
n.c.
23
TX3N
33
n.c.
gnd
32
H1
n.c.
EVTO1
34
S
SH1
n.c.
SH
SH2
2
J14
SAMTEC ASP-137973-01
0603
50V
47pF DNP
C38
COG/NP0
10K
1/10W
0603
R23
560R
0603
1/10W
R21
4K7
1/10W
0603
R25
STRIP2PM
J20
Yellow
0805
LD1
J18
STRIP2PM
J21
STRIP2PM
220R
1/10W
0603
R24
220R
1/10W
0603
R26
560R
1/10W
0603
R22
0805
Red
LD2
2
1
3
J13
STRIP3PM
1
2
J22
BNC-SMA-FEM-180
GND
GND
ENABLE
VCC
1
2
4
5
3
74V1G08STR
U3
SOT23-5L
VDD_HV_IO_MAIN
Vcc
GND
2
3
7
14
1
SO14
74LVC125AMTR
U1A
Vcc
GND
5
6
7
14
4
SO14
74LVC125AMTR
U1B
GND
GND
Vcc
9
8
7
14
10
SO14
74LVC125AMTR
U1C
GND
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
5767054-1
1
1
3
3
5
5
37
37
35
35
33
33
31
31
29
29
27
27
25
25
23
23
21
21
19
19
17
17
15
15
13
13
11
11
9
9
7
7
2
2
4
4
6
6
38
38
36
36
34
34
32
32
30
30
28
28
26
26
24
24
22
22
20
20
18
18
16
16
14
14
12
12
10
10
8
8
GND
1
39 40
GND
2
41
GND
3
42
GND
5
J7
GND
4
43
GND
PORST
TDO
TCK
TMS
TDI
ESR0
EVTI
MDO3
MDO2
MDO1
MDO0
EVTO
MCKO
MSEO
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
SW1
Pushbutton
UM2841
-
Rev 1
page 22/28
UM2841
Schematics
