FB755AC & FB755AS Version 1.0.3
- 12 -
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
