CME-Atom User Manual 1.2
www.diamondsystems.com
Page 23
4.1.12
Miscellaneous Signals
These pins carry the I2C bus plus a number of utility signals.
Signal Name
Signal Function
Direction
I2C_CK
General purpose I2C port clock output.
O
I2C_DAT
General purpose I2C port data I/O line.
I/O
SPKR
Output for audio enunciator - the "speaker" in PC-AT
systems
O
BIOS_DISABLE# Module BIOS disable input.
I
WDT
Output indicating that a watchdog time-out event has
occurred.
O
KBD_RST#
Input to module from (optional) external keyboard
controller that can force a reset.
I
KBD_A20GATE
Input to module from (optional) external keyboard
controller.
I