User manual

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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