Table 32
Miscellaneous Signal Descriptions
Signal
Description of Miscellaneous
signals
I/O
PU/PD
Comment
SPEAKER
Speaker output
O 3.3V
SPEAKER is a boot
strap signal (see note
below)
BATT
Battery supply
I
I
2
CLK
I
2
C Bus clock
I/O 5V
PU 4k7 5V
I
2
DAT
I
2
C Bus Data
I/O 5V
PU 4k7 5V
SMBCLK
SM Bus clock
I/O 3.3V
PU 2k2 3.3V
SMBDATA
SM Bus Data
I/O 3.3V
PU 2k2 3.3V
KBINH#
Keyboard inhibit
I 5V
OVCR#
Over current detect for USB
I 3.3VSB
PU 10k 3.3VSB
ROMKBCS#
Do not connect
N.A.
Not available
EXT_PRG
Do not connect
N.A.
Not available
GPCS#
General purpose chip select
N.C.
Not supported
Note
Some signals have special functionality during the reset process. They may bootstrap
some basic important functions of the module. For more information refer to section 7.9
of this user's guide.
Copyright © 2006 congatec AG
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