10. CONFIGURATION JUMPERS

This page describes the jumper block functionalities provided by the Floyd SC baseboard.

10.1 Digital IO Configuration (JP1)

Jumpers are provided to enable pull-up/down on the Digital I/Os. By default, the DIOs are pulled down. The configuration is as shown below:

Jumper Position

Configuration

1

Enable 3.3/5V pull-up to DIO Port A

2*

Enable pull-down to DIO Port A

3

Enable 3.3/5V pull-up to DIO Port B

4*

Enable pull-down to DIO Port B

5

Configure DIOs to be 5V complaint

6*

Configure DIOs to be 3.3V

* Default Mode

10.2 USB2.0 Top Port Host/Device Select (JP2)

USB2.0 Top port of the base board is used as a device in the recovery mode to flash the module and is used as a Host in normal operation. This selection is achieved by changing the jumper positions on JP3 as tabulated below:

Jumper Block

Description

D

USB2.0 port 1 Port as Device for Recovery Mode

H*

USB2.0 port 1 Port as Host in Normal Mode

* Default Mode

10.3 Serial Ports Configuration (JP3)

The serial port protocol modes can be set with jumpers or with software. The protocol selection must either be done with or with software. If both the jumpers & software are used to set the protocol mode, priority is given to software. The protocol mode selection & termination enable for RS-485 operation mode with jumper is as tabulated below:

Jumper Position (JP3)

Configuration

1

IN

Enable 121E termination for RS-485 mode operation

1

OUT

Disable 121E termination for RS-485 mode operation

2

IN

Set SER 2 in RS-232

3*

IN

Set SER 2 in RS-485

*:- Default

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