Kontron VM62 - Manual (Page 25)

Chapter 2 Functional Description VM62(A) / VM42(A) User’s Manual
The Ethernet port can be configured via the SI Interface with 10BaseT, 10Base5 or 10Base2 SI Modules. The following
configurations are therefore possible for the serial ports.
Versions with Ethernet Port
Port 68EN360 Resource Configured via
Service/Debug 1 SMC1 Base board, upper RJ12
Service/Debug 2 SMC2 Base board, lower RJ12
Ethernet SCC1 Base board, SI Module
Full MODEM 2 SCC2 CXC Module
Full MODEM 3 SCC3 CXC Module
Full MODEM 4 SCC4 CXC Module *
* The 10BaseX Modules do not make use of SCC4 and, therefore, can be used on the CXC.
Versions without Ethernet Port
Port 68EN360 Resource Configured via
Service/Debug 1 SMC1 Base board, upper RJ12
Service/Debug 2 SMC2 Base board, lower RJ12
Full MODEM 1 SCC1 Base board, SI Module
Full MODEM 2 SCC2 CXC Module
Full MODEM 3 SCC3 CXC Module
Full MODEM 4 SCC4 Base board, SI Module or CXC Module *
* Can only be used once.
2.5.3 CXC Interface
The Controller Extension Connector (CXC) is a local mezzanine interface. The CXC contains a 16-bit data bus, 7 address
lines and 8 decoded chip select lines. In total, there are 8 control signals. The base address of the CXC can be programmed
via the CS5 line of the 68EN360. The 8 CXC chip selects (CXC_CS0 - CXC_CS7) occupy 256 Bytes each and have an
address length of 400H (512 Bytes).
Furthermore, the CXC contains 4 IRQ capability (4 edge sensitive IRQs), DMA capability (1 channel, DREQ + DACK),
serial ports (3 channels, Full MODEM) and a set of parallel port signals. These special CXC functions are based on the
68EN360 resources.
For general CXC information, including generic pinouts and a comparison of the 68(EN)360 and 68302 CPU pinouts on
the CXC, please refer to the CXC Specification User’s Manual and the CXC Appendix attached to this manual.
Page 2-10 © 1995 PEP Modular Computers May 17, 1996