2 Hardware

STR710-EVAL

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2.9

CAN interface

A general purpose, asynchronous serial I/O data port connected through a 9-pin D-type male

connector with microswitch selectable low speed fault tolerant transceiver (L9669) or low or

high speed selectable transceiver (L9615 or L9616). See

Section 3.2: CAN bus connector on

page 13.

Caution:

The board schematic for the CAN interface detailed in

Figure 16: CAN interface on page 20, is

not a reference design and should not be copied. To design a CAN interface with the STR710

please refer to the “STR71x Hardware Development Getting Started Guide AN1775”.

2.10

RS232 serial interfaces

Two general purpose, asynchronous serial I/O data ports are connected through 9-pin D-type

male connectors refer to

Section 3.4: RS232 serial data connector on page 14.

RS232-A connects directly to UART0, transmit and receive only. RS232-B connects to either

UART1 or UART2 through switch 9, transmit and receive only.

RTS is shorted to CTS and DTR is shorted to DSR at the connector for both interfaces.

2.11

External analog

An external analog input connector is provided, see

Section 3.3: External analog on page 13

and

Figure 11: STR710-EVAL board top level page 1 of 2 on page 15.

2.12

Analog input

The analog input to ADC is demonstrated by the variable resistor R63. Although there is a

thermistor connected up to the analogue input AIN.1 in the schematics

Figure 11: STR710-

EVAL board top level page 1 of 2 on page 15, it is not functional and has been removed from

the product.