Acnodes FES 7510 - Manual (Page 50)

© Copyright 2009 Acnodes, Inc.
All rights reserved. Product description and product specifications
are subject to change without notice. For latest product information,
please visit Acnodes’ web site at www.acnodes.com.
661 Brea Canyon Rd., Suite 3
Walnut, CA 91789
tel: 909.598.7388, fax: 909.598.0218, www.acnodes.com
FES7510
Fanless Embedded Controller comes with
Intel Celeron M ULV Processor
3.7 USB2.0 Software Installation Utility
The I/O port address of the watchdog timer is 2E(hex) and 2F(hex). 2E (hex) is the address port. 2F(hex)
is the data port. User must first assign the address of register by writing address value into address port
2E(hex), then write/read data to/from the assigned register through data port 2F (hex).
Configuration Sequence
There are three steps to completing the configuration setup:
(1) Enter the MB PnP Mode.
(2) Modify the data of configuration registers.
(3) Exit the MB PnP Mode.
Undesired result may occur if the MB PnP Mode is not exited normally.
(1) Enter the MB PnP Mode
To enter the MB PnP Mode, four special I/O write operations are to be performed.
(2) Modify the data of configuration registers
All configuration registers can be accessed after entering the MB PnP Mode. Before accessing a se-
lected register, the content of index 07h must be changed to the LDN to which the register belongs,
except some Global registers.
(3) Exit the MB PnP Mode
Set bit 1 of the configure control register (index=02h) to "1" to exit the MB PnP Mode.