Acrosser AES-HM76Z1FL - Manual (Page 32)

AES-HM76Z1FL User Manual
32 Acrosser Technology Co., Ltd.
4.2. Digital Outputs
There are 8 digital outputs for general purpose output. The eight digital outputs are
TTL level Schmitt-trigger pin with 12mA source-sink capability for each channel, and
the maximum output voltage is 3.3V. You can control the output status of these digital
outputs through the software API. Please refer to the “ Software Installation and
Programming Guide” chapter for the detailed information on how to use the API.
The following diagrams state how to connect the digital inputs to the devices on the
system.
3.3V
4.3. Watchdog Timer
If you set a watchdog timer, you can use it to reset the system when system hangs
up due to hardware issue. After you set the watchdog timer, the software shall re-
set the timer to re-start a new cycle before it time-out. Please refer to Chapter 6.
Software Installation and Programming Guide for how to set the watchdog timer.
4.4. Serial ATA (SATA)
There is one SATA III port on the main board. There is also one SATA power
connectors (5V only power) for the SATA hard disk. Please be careful about it when
you install SATA hard disk driver.
4.5. USB
There are three USB 3.0 connectors provided on the mainboard. These USB 3.0
connectors are backward compatible with the USB 2.0. There are also two USB 2.0
ports provided (1 for Mini PCIe, 1 for Combo Connector).