Lantronix XPort AR, Руководство по интеграции

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3: Evaluation Kit
XPort AR Integration Guide 21
Table 3-3. JP3 Connections
JP3 Pin # Connects To:
1 Switch 1
2 Switch 2
JP4: Pull-Up Header
This header provides access to 1k pull-up resistors. These pins can be connected with a
jumper wire to any of the JP1 pins to set the signal level to high (in cases where the
corresponding CP is configured as an input). Use the JP3 switched signals for signals that
you wish to change between high and low relatively often.
Table 3-4. JP4 Connections
JP4 Pin # Connects To:
1 1k pull-up resistor
2 1k pull-up resistor
3 1k pull-up resistor
4 1k pull-up resistor
JP5: GND Header
This header provides access to signal ground. These pins can be connected with a jumper
wire to any of the JP1 pins to set the signal level to low (in cases where the corresponding
CP is configured as an input). For signals that you wish to change between high and low
relatively often, use the JP3 switched signals.
Table 3-5. JP5 Connections
JP5 Pin # Connects To:
1 Signal ground (GND)
2 Signal ground (GND)
3 Signal ground (GND)
4 Signal ground (GND)
Disconnect Jumpers
JP6: Disconnect Jumper Header
This header provides jumper positions to connect the XPort AR to the RS-232 Port A
transceiver when an RS-232 serial interface is desired. Install any number/combination of
these jumpers, depending on which RS-232 signals are required and which XPort AR signals
are to perform functions other than RS-232 related.