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9.2.1
LPC Bus
On the conga-TCA, the internal PCI Bus acts as the subtractive decoding agent. All I/O cycles that are not positively decoded are forwarded
to the internal PCI Bus. Only specified I/O ranges are forwarded to the LPC Bus by default.
In the congatec Embedded BIOS, the following I/O address ranges are sent to the LPC Bus:
2Eh – 2Fh
4Eh – 4Fh
60h
62h
64h
66h
200h – 20Fh
3F0h - 3F5h
3F7h
2F8h – 2FFh
1
378h – 37Fh
2
778h – 77Fh
2
F8h – 3FFh
3
Parts of these ranges are not available if a Super I/O is used on the carrier board. If a Super I/O is not implemented on the carrier board,
then these ranges are available for customer use. If you require additional LPC Bus resources other than those mentioned above, or more
information about this subject, contact congatec technical support for assistance.
Note
1
If COM B of external Super I/O is enabled in the BIOS setup menu
2
If LPT of external Super I/O is enabled in the BIOS setup menu
3
If COM A of external Super I/O is enabled in the BIOS setup menu