Silex-technology Embedded Intelligent Module SX-560 Bedienungsanleitung PDF herunterladen (Seite 19)

Installing the Evaluation Daughtercard

Silex

Page 13

Part Number 140-00192-100

Figure 5 RS-232 Cable Pinouts

Table 7 RS-232 Cable Pinout Description

Description

DCD (Data Carrier Detect) Input*

DSR (Data Set Ready) Input*

RxD (Receive Data) Input

TxD (Transmit Data) Output

DTR (Data Terminal Ready) Output*

RTS (Request To Send) Output*

CTS (Clear To Send) Input*

Ground

*Note: Serial Port 1 (J3) supports all signals. Serial Port 2 (J4) supports RxD, TxD, RTS, and CTS.

Serial Port 3 (J5; dedicated console port) supports RxD and TxD only.

Using the GPIO Special Functions

Six of the General Purpose I/Os (GPIOs) can be configured for either user-defined operations or for GPIO

for special functions. These special functions are summarized in the following table:

Table 8 GPIO Special Functions

Special Function (default setting)

Description

GPIO_3

TSPICS

Enable SPI temperature sensor

GPIO_4

DTR0

Serial Port 1 DTR modem signal

GPIO_5

DSR0

Serial Port 1 DSR modem signal

GPIO_6

DCD0

Serial Port 1 DCD modem signal

GPIO_7

GRN

Green status LED (D10)

GPIO_8

YEL

Yellow status LED (D9)

The mode of operation for each of the GPIOs can be set by installing jumpers between headers JP7 and

JP8 for GPIO operation, or between headers JP8 and JP9 for special function operation (all of the special

functions are enabled by default). For example, in the follow diagram, GPIO_3 is enabled for SPI

temperature sensor, while GPIO_4 is enabled as the DTR signal (DTR0) for Serial Port 1. The GPIO_5

through GPIO_8 are used as normal GPIOs in this example.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 109 110

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