The hardware features on the carrier board help you evaluate your peripheral connectivity and to configure the core module. DB9 connectors use the onboard RS-232 level shifter, allowing devices to connect via the serial ports. Extension headers make it easy to connect to a daughterboard or wrapping board for you specific application. The USB port can be used to monitor UART0 and/or power the board.

Power input can be routed from the USB connector (default) or external power jack (5-28 VDC) to the module and carrier board.
UART 0 RS-232 can be routed to and from the USB connector (default) or the “UART0” DB9 connector.
UART 1 can be used in RS-232 (via “UART1” DB9 connector) or RS-485 (via “J4” 5-pin header connector) mode.
The DB9 serial port connectors have DTE pin-outs; a null-modem cable is not required.

Connect the module

It is highly recommended that you become familiar with the NetBurner tools and development environment using the factory default configuration as described below:

Connect the SB70LC module to the carrier board with the short 20- pin ribbon cable that is included in your development kit. Note: The 10x2-pin header is labeled as “JP1” on both the SB70LC module and the carrier board.
The carrier board routes both UART 0 and 1 signals from the SB70- LC module to the two DB9 connectors via RS-232 level shifters. One or both ports can be connected to the host computer by using standard serial cables. Note: One standard serial cable is included in the development kit. With the factory application’s default configuration, UART 0 is the serial debug monitor port [i.e., the stdio port to where printf() messages are sent], and UART 1 is the serial-to-Ethernet data port.

Carrier Board Jumper Descriptions

Jumpers	Description	Configuration
JP2	Power - USB	[1 2] 3
JP2	Power via external power jack	1 [2 3]
JP3	UART0 RX - USB Connector	[1 2] 3
JP3	UART0 RX - DB9 Connector	1 [2 3]
JP4	UART0 CTS - USB Connector	[1 2] 3
JP4	UART0 CTS - DB9 Connectort	1 [2 3]
JP5	Normal Polarity - UART1 RS-485 +/-	No Jumper
JP5	Reverse Polarity - UART1 RS-485 -/+	Jumper
JP6	UART1 RS-485 full duplex mode	No Jumper
JP6	UART1 RS-485 half duplex mode	Jumper
JP7	Route UART1 RX from DB9 connector through rs-232 (J2)	[1 2] 3
JP7	Route UART1 RX from 5 pin header through rs-285 (J4)	1 [2 3]
JP8	UART1 RS-485 echo enabled	No Jumper
JP8	UART1 RS-485 echo disabled	Jumper
UART0 via USB	JP3[1-2],JP4[1-2]	N/A
UART0 via RS-232 (J1)	JP3[2-3],JP4[2-3]	N/A
UART1 via RS-232 DB9 (J2)	JP7[1-2]	N/A
UART1 full-duplex RS-485 5-pin header (J4)	JP7[2-3]	JP6
UART1 half-duplex RS-485 5-pin header (J4)	JP6[1-2],JP7[2-3]	N/A

Note: Power must be selected in all modes, JP2[1-2] or JP2[2-3].