Technical information

6.6.Option Links
Table 6-5 below describes the function of the option links contained on this CPU board. The default configuration is indicated by BOLD
text.
Option Link Settings
Reference Function Fitted Alternative (Removed) Related To
R3 Power Source
Board can be powered from J7
Disable external power connector R13, R22,
R40, R43
R4 E8
Enables E8
R5 Serial Port Configuration
Connects programming port
(Rx) to E8 connector.
Disconnects programming port
(Rx) from E8 connector.
R6, R36,
R37
R6 Serial Port Configuration
Connects programming port
(Tx) to E8 connector.
Disconnects programming port
(Tx) from E8 connector.
R5, R36,
R37
R13 Power Source Board is powered from VBUS
Board is powered by another
source
R3, R22,
R40, R43
R15 Serial Port Configuration Connects serial port D5 (Tx) to
D-type connector (J8).
Disconnects serial port D5 (Rx)
from D-type connector (J8).
R28, R34,
R35
R18 Power Source
Connects external 3.3V power
source to the board.
Disconnects external 3.3V power
source from the board.
R3, R13,
R22, R40,
R43
R19 RS232 Serial
Disables RS232 Serial
Transceiver
Enables RS232 Serial
Transceiver
R21 Analog Voltage Source
Analog voltage source from on
board Vcc.
Analog Voltage Source from
external connector.
R46
R22 Power Source
Board can be powered from E8
Disable E8 power source R3, R13,
R40, R43
R24 MCU Power
Supply
Supply to MCU
Fit Low ohm resistor to measure
current
R28 Serial Port Configuration Connects serial port D5 (Rx) to
D-type connector (J8).
Disconnects serial port D5 (Tx)
from D-type connector (J8).
R15, R34,
R35
R30 Serial Port Configuration
Routes serial port D0 (Rx) to
application connector (JA2)
Disconnects serial port D0 (Rx)
from application connector (JA2)
R31
R31 Serial Port Configuration
Routes serial port D0 (Tx) to
application connector (JA2)
Disconnects serial port D0 (Tx)
from application connector (JA2)
R30
R32 Serial Port Configuration Routes programming port (Tx) to
application connector (JA6)
Disconnects programming port
(Tx) from application connector
(JA6)
R33
R33 Serial Port Configuration Routes programming port (Rx) to
application connector (JA6)
Disconnects programming port
(Rx) from application connector
(JA6)
R32
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