13
USB
The table below describes the pin functions of FPC connector used as USB interface.
PIN#
Signal Name
I/O
Function
1
232INV
O
Output: High=TTL-232 interface; Low=USB
interface
2
VIN
-
Power: supply voltage input
3
GND
-
Ground: power and signal ground
4
D-
I/O
Input/Output: USB D- signal
5
Reserved
O
Reserved
6
D+
I/O
Input/Output: USB D+ signal
7
Reserved
O
Reserved
8
PWRDWN
O
Output: Active high, scan engine is in sleep
mode
9
nBEEPER
O,od
Output-Open Drain: Beeper output
10
nGoodRead
O,od
Output-Open Drain: Good read LED output
11
nWAKE
I
Input: Active low, wakes the engine from sleep
mode
12
nTrig
I
Input: Active low, signal used as trigger input to
activate the engine to start a scan and decode
session
I = Input; O = Output; od = Open Drain.
Micro USB
The Micro USB connector on the EM20 is a standard connector and can be used accordingly.
Summary of Contents for NLS-EM20
Page 1: ...NLS EM20 OEM Scan Engine Integration Guide ...
Page 6: ......
Page 14: ...8 Top View unit mm ...