Roving Networks WIFLY GSX Bedienungsanleitung PDF herunterladen (Seite 17)

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www.rovingnetworks.com Version 1.32r 10/9/2012 17

RN-WIFLY-EVAL-UM

Figure 11. RN-174 Evaluation Board (Part 1 of 2)

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RS-232 Interface (J3)

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RX - input to evaluation board

TX - output from evaluation board

Pin

Description

1

No connect

2

RS-232 TX

3

RS-232 RX

4

No connect

5

GND!

6

No connect

7

RS-232 RTS

8

RS-232 CTS

9

External DC 2 to 3.3 V

or 5 to 12 V (see J7)

10

No connect

Power Select Jumper (J4)

High-Voltage Mode (Default). The board is

powered by a source up to 12 V DC.

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Low-Voltage Mode. The board is powered

by 2.0- to 3.3-V DC only.

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External Power Mode. Used when

powering the board with regulated 3.3-V

DC power.

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GPIO Interface

TTL Signals (J8)

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RX - input to evaluation board

TX - output from evaluation board

Pin

Description

1

3.3 VDD

2

GND

3

UART RX

4

UART TX

5

GPIO4

6

GPIO5

7

GPIO6

8

GPIO7

9

GPIO8 (1)

10

GPIO9

11

UART CTS

12

UART RTS

13

RESET

Sensors (J1)

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Pin

Description

1

Sensor PWR

2

Sensor 4 (3.3-V tolerant)

3

Sensor 5 (3.3-V tolerant)

4

Sensor 7 (1.2 V only)

5

Sensor 5 (1.2 V only)

6

Sensor 4 (1.2 V only)

7

Sensor 6 (1.2 V only)

8

Sensor 3 (1.2 V only)

9

GND

WARNING: Voltage on pins marked 1.2 V

Only should not exceed 1.2 V or permanent

damage will occur.

Power (J7)

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Pin

Description

1

External DC 2 to 3.3 V or

5 to 12 V (see J4)

2

GND2

Pull Up/Down (J2)

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Ad Hoc Mode/Factory Reset (J6)

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LED Indicators

RS-232

Interface (J3)

Power Select

Jumper (J4)

GPIO Interface

TTL Signals (J8)

Power

(J7)

Sensor

Interface (J1)

PCB Trace

Antenna

ISP Connector

(J5)

Pull Up/

Down (J2)

Factory Reset/

Ad Hoc Mode (J6)

9

5234

678

1

10

1

2

3

4

5

6

7

8

9

10

11

12

13

95234678 1

12

123

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