User's Guide

FB755AC-F & FB755AS-F User Guide Version 1.1
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6
CONNECT_CHECK
UART_DCD
1:N – Connect Check
1:1 - UART Data Carrier Detect
Output
TTL
7
GND
Ground
8
UART_TXD
UART Transfer Data
Data output
Output
TTL
9
UART_RXD
UART Received Data
Data Input
Input
TTL
10
MESSAGE_CONTROL
UART_CTS
1:N – Message Control
1:1 - UART Clear To Send
Input
TTL
11
MESSAGE_STATUS
UART_RTS
1:N – Message Status
1:1 - UART Ready To Send
Output
TTL
12
VSUP
3V3 for RF circuit (Vcc)
Input
<Table 4-1 Pin Description>
- Hard Reset (Factory Reset)
When the CONFIG_SELECT (No 5 PIN) is HIGH (Pull-up condition), turn the power ON (PC-Configuration
Mode). And then input LOW signal (0 Volt) to FA_SET (No 2 PIN) for more then 2 seconds for the factory
reset.
- STATUS port
To be used to monitor the status of FB755AC-F & FB755AS-F.
To keep LOW(0V) when the two devices are communicable since the connection between wireless range is
smoothly made.
In standby mode for connection with Bluetooth, or connection trial, or searching for around Bluetooth
device will repeat LOW and HIGH.
- UART_CTS, UART_RTS, UART_DTR, UART_DSR
When the flow control is not used, non connection will not affect the operation of FB755AC-F & FB755AS-F.
- STREAM_CONTROL, STREAM_STATUS, MESSAGE_CONTROL, MESSAGE_STATUS
The connection is necessarily required for 1:N communication. For 1:1 communication, don’t need to
connect.
- CONNECT_CHECK / UART_DCD
CONNECT_CHECK is used for 1:N communication.
In 1:N communication, if all connection is successful, CONNECT_CHECK (DCD) in SLAVE is outputted LOW
signal. However, if one or more of connections is disconnected, DCD in SLAVE will be outputted HIGH signal.
(Default DCD Output : HIGH)