8
XR21V1414 EVALUATION BOARD USER’S MANUAL
REV. 1.0.0
3.0 DRIVERS AND SUPPORT
For any questions about this evaluation board, software drivers or technical support, send an e-mail to
.
JP16
Top
Channel B select for half duplex or full
duplex mode
Jumper in 1&2 selects for half duplex mode
Jumper in 2&3 selects for full duplex mode
JP36
Top
Power supply for RS-485 transceiver of
Channel C
Not installed. Trace between pin 1&2
JP17
Top
Select Channel C RTS or DTR direction
control for TX
Jumper in 1&2 selects RTS based direction control for
TX
Jumper in 2&3 selects DTR based direction control for
TX
JP18
Top
Select Channel C direction control for RX
and TX or always for RX
Jumper in 1&2 selects common direction control for
RX and TX
Jumper in 2&3 selects common direction control for
RX always
JP19
Top
Channel C select for half duplex or full
duplex mode
Jumper in 1&2 selects for half duplex mode
Jumper in 2&3 selects for full duplex mode
JP20
Top
Channel C select for half duplex or full
duplex mode
Jumper in 1&2 selects for half duplex mode
Jumper in 2&3 selects for full duplex mode
JP37
Top
Power supply for RS-485 transceiver of
Channel D
Not installed. Trace between pin 1&2
JP21
Top
Select Channel D RTS or DTR direction
control for TX
Jumper in 1&2 selects RTS based direction control for
TX
Jumper in 2&3 selects DTR based direction control for
TX
JP22
Top
Select Channel D direction control for RX
and TX or always for RX
Jumper in 1&2 selects common direction control for
RX and TX
Jumper in 2&3 selects common direction control for
RX always
JP23
Top
Channel D select for half duplex or full
duplex mode
Jumper in 1&2 selects for half duplex mode
Jumper in 2&3 selects for full duplex mode
JP24
Top
Channel D select for half duplex or full
duplex mode
Jumper in 1&2 selects for half duplex mode
Jumper in 2&3 selects for full duplex mode
T
ABLE
6: J
UMPER
S
ETTINGS
F
OR
RS-485 M
ODE
J
UMPERS
L
OCATION
F
UNCTIONS
C
OMMENTS
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