Kontron VM162 - Manual (Page 28)

VM162/VM172 Chapter 2 Functional Description
Page 2- 6 © PEP Modular Computers Juli 23, 1997
2.3.4 EEPROM
The EEPROM is a non-volatile serial memory device. It provides 2 kbit size and is accessed over the
SPI (Serial Peripheral Interface) of the 68EN360.
1 kbit of this EEPROM memory is free for application relevant data whereas the rest of this EEPROM
is reserved. This part is used for storing board ID codes, Internet/Ethernet addresses and boot informa-
tion.
Note: For more information on the EPROM type, please refer to the XICOR X25C02 data sheet. For
EEPROM internal address mapping, also refer to the Programming Chapter in this manual.
2.4 Communication Controller 68EN360 (QUICC)
The 68EN360 QUICC (Quad IntegratedCommunication Controller), serves as an I/O controller/proces-
sor on the VM162/VM172. This device is especially optimized for serial communication.
Therefore, it provides an unique internal hardware architecture and supports a variety of communication
protocolls and operating modes.
In addition, the QUICC is used for some on-board system functions such as DRAM control, Tick gene-
ration and address decoding by operating in the so-called companion mode. In this mode its own CPU32
core is disabled whereas all other features including its Communication Processor Module (CPM) are
still available.
In terms of communication tasks the QUICC works as a co-processor to the CPU. Its internal commu-
nication „hardware“ is built up with a command programmable Communication Processor, 14 dedicated
DMA channels, 4 Serial Communication Controllers (SCC), 2 Serial Management Controllers (SMC)
and a Time-Slot Assigner (TSA).
Among many others, protocolls supported by the SCCs for example are UART, HDLC/SDLC, Apple
Talk, Ethernet/IEEE 802.3, X.21 and Signaling System # 7. The Time-Slot Assigner supports building
2 time-domain-multiplexed (TDM) channels to be for instance E1/T1, ISDN Basic/Primary Rate or
User Defined.
Warning!
In the PEP supported BSP’s for OS-9 version 3.0, PEP makes sure that the proper ini-
tialization sequence for the QUICC is followed. Never change this initialization se-
quence, as unexpected errors may occur.
2.4.1 Use of 68EN360 Communication Ports
The 68EN360 provides 5 serial ports based on 4 SCCs and 1 SMCs. These multiprotocol serial ports can
be physically translated to the different standards due to application specific demands. This translation
is very flexible on the VM162/VM172 by using SI- and SC- piggybacks or even CXMs. 5 configured
serial ports are available at front panel connectors.