X
X
R
R
P
P
7
7
7
7
4
4
0
0
E
E
V
V
B
B
-
-
H
H
I
I
C
C
F
F
o
o
u
u
r
r
C
C
h
h
a
a
n
n
n
n
e
e
l
l
D
D
i
i
g
g
i
i
t
t
a
a
l
l
P
P
W
W
M
M
D
D
e
e
m
m
o
o
B
B
o
o
a
a
r
r
d
d
s
s
© 2013 Exar Corporation
6/18
Rev. 1.0.0
EVALUATION BOARD CONNECTIONS:
Channel 1
Channel 2
Channel 3
Channel 4
+
-
+
+
+
-
-
-
+
-
J3-XCM
LX1
LX2
LX3
LX4
Vin+
Vin-
Vin
Vin
J1-Test
J2-Test
Figure 4: Board Connections
`
Board Jumper Configurations
There are five, three pin configuration
connectors on the board. The configuration
options are selected by adding a jumper to
either pins 1 and 2 or pins 2 and 3.
Figure 5 shows the factory jumper positions
and the above table describes the function of
each of the jumpers. The items that are
shown in bold are the default factory settings.
Figure 5: Factory Jumpers Setting
Jumper Pins to Select
Conn. Function
1 - 2
2 - 3
J4
Power Source for Drivers
External 5V LDO
Internal 5V LDO
J5
I2C Pull Up Resistors
On Board Pull Ups
No Pull Ups
J6
External 5V LDO Supply
Enable Ext. 5V LDO
Disable Ext. 5V LDO
J7
7740 Pin 15 Connection
Vo4 Output
Do No Use
J8
Charge Pump Enable
Enable Charge Pump
Disable Charge Pump
