Stevie User Manual Rev 1.03
Page 34
11 JUMPER DESCRIPTION
The Jumper blocks on the baseboard can be configured to enable/disable or alter the default signal routing
settings on the circuit, using Jumper shunts.
The following table describes the Jumper Blocks on the baseboard. Refer to
Jumper Description
JP1
Serial Termination
J24
Debug port Selection
J18
MiniCard USB 2.0 Selection
11.1 Serial Termination and USB Mode Selection JP1
The
JP1
block settings can be switched to operate in different modes. The mode is selected using Jumper
shunts.
Termination resistors for RS422/RS485 modes can be set using Jumpers on pin headers for serial ports 1
and 2.
The following table shows the positions, function and termination modes on the
JP1
block. The text in bold
and italics mark the default configuration on
JP1
.
Position
Function
IN
OUT
TX1
Serial Port1 TX Termination
Enabled
Disabled
TX2
Serial Port2 TX Termination
Enabled
Disabled
RX1
Serial Port1 RX Termination
Enabled
Disabled
RX2
Serial Port2 RX Termination
Enabled
Disabled
The following figure illustrates the default Jumper settings on the
JP1
block.
Figure 11-1: Jumper JP1 Default Locations