Kontron VSBC-32 - Manual (Page 47)

VSBC-32 Functional Description
ID 21168, Rev. 04 Page 2 - 15 © PEP Modular Computers GmbH
For general CXC information, including generic pinouts and a comparison of the
MC68(EN)360 and the MC68302 CPU pinouts on the CXC, please refer to the “CXC”
appendix attached to this manual, the
PEP Modular Computers CXC Reference Manual
or to the CXC Specification.
2.5 VSBC-to-VSBC-32 System Upgrading
In the following the porting information required by customers wanting to upgrade their
VSBC-based systems to an VSBC-32 based one is supplied.
The VMEbus/CXC ports SER1, SER2 and SER3 of the MC68302 are equivalent to
ports SCC2, SCC3 and SCC4 respectively on the MC68(EN)360 controller chip.
With regard to special VMEbus/CXC capabilities, the VMEbus/CXC pinout on the
VSBC-32(E) has been developed to provide maximum compatibility between the stan-
dard VMEbus/CXC functions. In addition, all signals are available in order to configure
two time division multiplexed channels via the VMEbus/CXC (ISDN, PCM, GCI and so on).
Multifunction pins with incompatible functions with regard to the MC68302 and
MC68(EN)360, which are called “user-defined” in the generic CXC Specification, are not
part of the VSBC-32(E) VMEbus or CXC specification.
Although the SMCs are configured on the mainboard, these ports are also integrated on
the VMEbus/CXC because of possible ISDN applications where SMCs can be inte-
grated and other protocols supported by the MC68(EN)360.
Note...
If the RCLK2 signal (VMEbus/CXM pin C16) is required, jumper
J4 (24MHz clock) must be opened and the serial drivers deliv-
ered by
PEP Modular Computers must be modified.