Newland NLS-EM3296, Руководство по интеграции

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12
Chapter 4 Interfaces
Host Interface Connector
The following table lists the pin functions of the 12-pin host interface connector on the EM3296.
PIN# Signal 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. External beeper driver circuit is needed to drive beeper.
10 LED O LED output. External LED driver circuit is needed to drive LED.
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
engine to start a scan and decode session.