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2.20 Watchdog timer configuration
An onboard watchdog timer reduces the chance of disruptions which
EMP (electro-magnetic pulse) interference can cause. This is an invalu-
able protective device for standalone or unmanned applications. Setup
involves one jumper and running the control software (refer to Appendix
A).
When the watchdog timer activates (CPU processing has come to a halt),
it can reset the system.
2.21 USB connector (CN7,CN9,CN16)
The AIMB-340F board provides six USB (Universal Serial Bus) inter-
faces which support plug and play and hot attach/detach for up to 127
external devices. The USB interfaces comply with USB specification
Rev. 2.0 support 480 Mbps transfer rate and are fuse protected.
There are 4 USB2.0 jack on CN7 and CN9. And CN16 is for Embedde-
dUSB Type I/II connection purpose.
Embedded USB Interface is based on USB 2.0 and re-define pin assign-
ment and connector type to fit Embedded Market
The USB interfaces can be disabled in the system BIOS setup.
2.22 Digital I/O (CN19: 4 Outputs, 4 Inputs)
The POS-760 has two high drive digital outputs (24 VDC, 1 A max) and
four digital inputs (TTL level). You can configure the digital I/O to con-
trol the opening of the cash drawer and to sense the closing of the cash
drawer. The following explains how the digital I/O is controlled via soft-
ware programming and how a 12 V solenoid or relay can be triggered:
Digital I/O Connector
IN0
IN1
IN2
IN3
GND
KEY
OUT3
AIMB-340F User's Manual
1
3
5
7
9
11
13
24
2
4
6
8
10
12
14
+5 V
OUT0 (Max 1A)
GND
OUT1 (Max 1A)
+ 12 V
KEY
GND
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