Kontron VSBC-32 - Manual (Page 35)

VSBC-32 Functional Description
ID 21168, Rev. 04 Page 2 - 3 © PEP Modular Computers GmbH
2. Functional Description
2.1 General Information
The VSBC-32(E) is a 3U VMEbus combined system and communications controller
board based on the Motorola Quad Integrated Communications Controller “QUICC”
MC68(EN)360. Depending on the controller chip used and the SRAM size, there are
four board variants with different characteristics. The following table provides an over-
view of the various VSBC-32(E) board variants.
Being the MC68(EN)360 a CPU and serial communications controller, it is particularly
suitable for system control functions within applications with communications require-
ments such as LAN, WAN or fieldbusses (CAN, LON, PROFIBUS).
In fact, both the VSBC-32 and the VSBC-32E allow for a wide range of serial interfaces
based on the MC68(EN)360 controller which is able to handle up to six serial communi-
cations channels. The channels can be configured in the following way:
• Two service / debug interface connectors (SMC interface, RxD/TxD, RS232 only)
• Four full modem interface connectors / multiprotocol channels (SCC interfaces).
Thus, the VSBC-32(E) mainboard comes complete with two non-optoisolated RS232
external interfaces which are located on the lower half of the front panel. However, the
external serial interfacing can be extended by means of a variety of serial interface (SI)
piggybacks and/or a CXM-SIO3 type external serial interface module. This external mod-
ule can be either “sandwiched” with the controller or placed to the right of the VSBC-32(E).
In the first case, communication between the controller and the I/O module is acchieved
via the VSBC-32(E)’s on-board CXC connector, in the second case via the VMEbus.
As the CXM-SIO3 can be used again as a carrier for various serial interface (SI) and
serial communications (SC) piggybacks, the VSBC-32/CXM-SIO3 tandem represents a
really powerful and versatile sytem control and serial communications control set.
Together with the two service/debug interfaces, a maximum of three (four with the serial
interface piggyback fitted) completely configured serial interfaces are available for the
base board. Three (two with serial interface piggyback fitted) serial interfaces may be
configured via the VMEbus where three of the four full modem Interfaces are routed.
The VSBC-32(E) allows also a significant variety of memory configurations, mainly
DRAM and flash memory located on special memory piggybacks, add-on flash/EPROM
on DIP sockets, battery backed-up SRAM and EEPROM.
Table 1-1: VSBC-32(E) Board Variants
Board Name Processor
Ethernet
Capability
Processor
Frequency
SRAM Size
VSBC-32 MC68360 — 25MHz 256kB
VSBC-32E MC68EN360
+ 25MHz 256kB
+ 33MHz 256kB
+ 33MHz 1MB