14
12-pin FPC Connector
The following table lists the pin functions of the 12-pin FPC connector.
Table 3-1
PIN#
Signal
I/O
State
Function
Remark
1
EXT_TRIG#
I
High Level
External trigger control signal (active low)
See Note 1
2
EXT_RST#
I
High Level
External reset control signal (active low)
See Note 2
3
EXT_DSF
O
Low Level
External good read LED control signal (active
high)
See Note 3
4
EXT_BUZ
O
Low Level
External beeper control signal (active high)
See Note 4
5
NC
-
-
-
6
USB_D+
Two-way
High Level
USB_D+ signal
7
USB_D-
Two-way
Low Level
USB_D- signal
8
TTL232_TX
O
High Level
TTL level 232 transmit data
9
TTL232_RX
I
High Level
TTL level 232 receive data
10
GND
Power Supply
-
Power-supply ground
11
EXT_VCC
Power Supply
-
5V power supply input
12
NC
-
-
-
8-pin Box Connector
The following table lists the pin functions of the 8-pin box connector.
Table 3-2
PIN#
Signal
I/O
State
Function
Remark
1
EXT_VCC
Power Supply
-
5V power supply input
2
GND
Power Supply
-
Power-supply ground
3
EXT_TRIG#
I
High Level
External trigger control signal (active low)
See Note 1
4
EXT_ DSF
O
Low Level
External good read LED control signal
(active high)
See Note 3
5
USB_D+
Two-way
High Level
USB_D+ signal
6
USB_D-
Two-way
Low Level
USB_D- signal
7
RS232_TX
O
Low Level
RS-232 transmit data
8
RS232_RX
I
Low Level
RS-232 receive data
