User's Manual

FB755AC & FB755AS Version 1.0.3
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PIN
NO.
NAME OF SIGNAL FEATURES
INPUT/OUTPUT
DIRECTION
SIGNAL
LEVEL
1 STATUS STATUS LED Output TTL
2 FA SET
Factory Reset
Go back default setting
Input
TTL
Pull-up
STREAM_CONTROL 1:N – Stream Control
3
UART_DSR 1:1 – UART Data Set Ready
Input TTL
STREAM_STATUS 1:N – Stream Status
4
UART_DTR 1:1 – UART Data Terminal Ready
Output TTL
5 CONFIG_SELECT Configuration Select Input
TTL
Pull-down
CONNECT_CHECK 1:N – Connect Check
6
UART_DCD 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
MESSAGE_CONTROL 1:N – Message Control
10
UART_CTS 1:1 - UART Clear To Send
Input TTL
MESSAGE_STATUS 1:N – Message Status
11
UART_RTS 1:1 - UART Ready To Send
Output TTL
12 VSUP 3.3V DC (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 & FB755AS.
To keep LOW(0V) when the two devices are communicable since the connection between