Lantronix XPort Pro LX6 XPort - Universal Demo Board User Guide - Page 8

2: Demonstration Kit Power Supply The demo board uses an external 3.3V regulated supply (included with kit). General Control The following tables denote the configuration of the demo board. Configuring the jumpers re-routes signals on the demo board to use as Serial control signals, or to connect to other places on target board as General Purpose IO (GPIO). Configuration Switch Bank Table 2-2. Demo Board JP6 Jumper Configuration for CON1 JP6 pin/Signal 1/TXD 3/RTS 5/DTR 7/RXD 9/CTS 11/DSR 13/DCD JP6 pin/Signal 2/TXD 4/RTS/CP1 6/DTR/CP2 8/RXD 10/CTS/CP3 12/NC 14/NC Function Jumper 1-2, Send TXD to RS-232 transceiver. Jumper 3-4, Send RTS to RS-232 transceiver. For connection to an additional RS485 transceiver, RTS would be used to drive the transceiver TX enable. Jumper 5-6, Send DTR/CP2 to RS-232 transceiver. Jumper 7-8, Receive RXD from RS-232/485 transceiver. Jumper 9-10, Receive CTS from RS-232 transceiver. Jumper 11-12. Unused, auxiliary transceiver receive port. Jumper 13-14, Unused, auxiliary transceiver receive port. Note: CP arrangement in the tables above is for demonstration purposes only. All CPs can be used as GPIOs. In XPort Pro custom applications, any CP can be assigned as any function except that only CP1 can be assigned to RTS in RS-232 mode or TX Enable in RS485 Mode, and only CP3 can be assigned to CTS in RS232 Mode. In XPort custom applications (RS-232 mode), only CP1 can be assigned to RTS, only CP2 can be assigned to DTR, and only CP3 can be assigned to CTS. Note: NC=Not Connected to the XPort module. These pins can be assigned as needed using jumpers. Table 2-3. Demo Board R16 Configuration Pin/Signal 1/3V3 Pin/Signal 2/3V3_XPort Function XPort UUT power input resistor for current measurement. Resistor can be replaced by a wire loop or other resistor value for UUT power measurements XPort Universal Demo Board User Guide 8