Aaeon EMB-LN9T Rev.B Manual page 40

M i n i - I T X
(3) Exit the W83627UHG config Mode. Undesired result may
occur if the config Mode is not exited normally.
(1) Enter the W83627UHG config Mode
To enter the W83627UHG config Mode, two special I/O write
operations are to be performed during Wait for Key state.
ensure the initial state of the key-check logic, it is necessary to
perform two write operations to the Special Address port (2EH).
The different enter keys are provided to select configuration ports
(2Eh/2Fh) of the next step.
87h,87h:
(2) Modify the Data of the Registers
All configuration registers can be accessed after entering the config
Mode. Before accessing a selected register, the content of Index
07h must be changed to the LDN to which the register belongs,
except some Global registers.
(3) Exit the W83627UHG config Mode
The exit key is provided to select configuration ports (2Eh/2Fh) of
the next step.
0aah:
CR 30h. (Default 02h)
BIT READ/WRITE
7~3 Reserved.
2 R/W
E M B - L N 9 T R e v . B
Address Port
2Eh
Address Port
2Eh
0: GPIO6 is inactive.
Appendix A Programming the Watchdog Timer
Data Port
2Fh
Data Port
2Fh
DESCRIPTION
1: GPIO6 is active.
To
A-3