Figure 14.
Reset, JTAG, Nexus level 3+ support, Nexus interface and crystal oscillator
EVTI
PORST
EXTAL
XTAL
EVB-EXTAL
ESR0
PORST
RST-MCU
OSC-MOD
EVB-EXTAL
EXTAL-SMA
RST-SW
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
TDI
TDO
TCK
TMS
TDI
TCK
TMS
TDO
EVTI
EVTI
EVTO
Re s e t , J TAG, Ne x u s le ve l 3 + s u p p ort , Ne x u s In t e rfa c e a n d Cry s t a l Os c illa t or
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
(MCU Crystal Input)
(MCU Crystal Output)
1-2 CLOSED
DEFAULT
1-2 CLOSED
DEFAULT
default OPEN
1-2 CLOSED
DEFAULT
GND
default CLOSED
default CLOSED
default CLOSED
REMOVE XTAL jumper when driving EXTAL from
Oscillator Module or External Source (PLL Enabled)
Connect XTAL jumper to GND when driving EXTAL from
Oscilaltor Module or External Source (PLL Bypass Mode)
Note - External 3.3V
egulator MUST be
enabled when using
oscillator module
Note - Internal
Pull-Up on Pin 1
SMA style
Connector
USER RESET LED
External Clock Input
MCU RESET LED
RESET
Nexus interface
Nexus level 3+ support
Jtag interface
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.
TDI, TDO, TCK, TMS are not connected to daughter card.
PORST, EVTI and EVTO are connected to daughtercard
Place CAPS as close to connector pins as
possible but do NOT fit cap C34 at board assembly.
JTAG Connector
NOT MOUNTED
NOT MOUNTED
NOT MOUNTED
NOT MOUNTED
EVTO
EVTO
EVTI
GND
GND
NOT MOUNTED
2
1
3
STRIP3PM
J15
0R
1/10W
0603
R15
1
2
40MHz
NX5032GA
XT1
0603
10pF DNP
50V
COG/NP0
C36
0603
10pF DNP
50V
COG/NP0
C37
0603
100nF
50V
X7R
C39
STRIP2PM
J17
2
1
3
STRIP3PM
J19
100R
1/10W
0603
R27
EN
1
GND
2
OUT
3
+Vs
4
8MHz
7x5
OSC1
0R DNP
1/10W
0603
R7
0603
27pF
50V
COG/NP0
C35
0603
47pF DNP
50V
COG/NP0
C34
TX0P
1
TX0N
3
gnd
5
TX1P
7
TX1N
9
gnd
11
TX2P
13
TX2N
15
+V
2
TCK
4
TMS
6
TDI
8
TDO
10
JCOMP
12
EVTI1
14
EVTI0
16
EVTO0
18
RSTOUT
20
RSTIN
22
gnd
24
CLKP
26
CLKN
28
gnd
30
TX3P
19
gnd
23
gnd
29
n.c.
25
gnd
17
n.c.
27
TX3N
21
n.c.
31
EVTO1
32
n.c.
33
n.c.
34
SH1
SH1
SH2
SH2
SAMTEC ASP-137973-01
J14
0603
47pF DNP
50V
COG/NP0
C38
10K
1/10W
0603
R23
560R
1/10W
0603
R21
4K7
1/10W
0603
R25
STRIP2PM
J20
Yellow
0805
LD1
STRIP2PM
J18
STRIP2PM
J21
220R
1/10W
0603
R24
220R
1/10W
0603
R26
560R
1/10W
0603
R22
Red
0805
LD2
Pushbutton
SW1
2
1
3
STRIP3PM
J13
1
2
BNC-SMA-FEM-180
J22
GND
ENABLE
GND
VCC
1
2
4
5
3
74V1G08STR
SOT23-5L
U3
VDD_HV_IO_MAIN
GND
Vcc
2
3
7
14
1
74LVC125AMTR
SO14
U1A
GND
Vcc
5
6
7
14
4
74LVC125AMTR
SO14
U1B
GND
GND
Vcc
9
8
7
14
10
74LVC125AMTR
SO14
U1C
GND
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
GND
PORST
TDO
TCK
TMS
TDI
ESR0
EVTI
MDO3
MDO2
MDO1
MDO0
EVTO
MCKO
MSEO
VDD_HV_IO_MAIN
VDD_HV_IO_MAIN
PORST
PORST
ESR0
ESR0
PORST
10K
1/10W
0603
R2
GND
TDI
1
GND
2
TDO
3
GND
4
TCK
5
GND
6
EVTI
7
N/C
8
RESET
9
TMS
10
VDD
11
GND
12
RDY
13
JCOMP
14
N2514-6002RB
J12
N/C
1
N/C
3
MDO09
5
VSTBY
37
ToolIO0
35
VBatt
33
VBatt
31
ToolIO1
29
TDET/WDTC
27
RSTOUT
25
MDO11
23
JCOMP
21
TDI
19
TMS
17
TCK
15
MDO10
13
TDO
11
RSTIN
9
BootCFG
7
N/C
2
N/C
4
CLKOUT
6
MSEO0
38
MSEO1
36
MCKO
34
EVTO
32
MDO0
30
MDO1
28
MDO2
26
MDO3
24
MDO4
22
MDO5
20
MDO6
18
MDO7
16
RDY
14
VTREF
12
EVTI
10
MDO08
8
G
N
D
39
G
N
D
40
G
N
D
41
G
N
D
42
G
N
D
43
5767054-1
J7
UM2868
-
Rev 1
page 24/30
UM2868
Schematic
