Integration Guide
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Chapter 4 Interfaces
Host Interface Connector
The following table lists the pin functions of the 12-pin host interface connector.
PIN#
Signal Name
I/O
Function
1
NC
-
Not connected.
2
VDD
-
3.3V power supply.
3
GND
-
Power-supply ground.
4
RX
I
TTL level 232 receive data.
5
TX
O
TTL level 232 transmit data.
6
USB_D-
I/O
USB D- differential data signal.
7
USB_D+
I/O
USB D+ differential data signal.
8
NC
-
Not connected.
9
Buzz
O
Beeper output. For the information of external beeper driver circuit,
see the Beeper section in this chapter.
10
LED
O
Good Read LED output. For the information of LED driver circuit, see
the Good Read LED section.
11
Reset
I
Reset signal input: Driving this pin low for 100us-500us resets the
engine.
12
nTrig
I
Trigger signal input: Driving this pin low for at least 10ms causes the
RT207 to start a scan and decode session.
