Advantech AIMB-330F, Руководство пользователя

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25 Chapter 2
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-330F 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 AIMB-330 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
control 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 1 2 +5 V
IN1 3 4 OUT0 (Max 1A)
IN2 5 6 GND
IN3 7 8 OUT1 (Max 1A)
GND 9 10 + 12 V
KEY 11 12 KEY
OUT3 13 14 GND
OUT2 15 16 + 12