Technology; Programming - Samsung iDCS 500 General Description Manual

1.3 TECHNOLOGY

MEMORY
The system operates using stored program control. This program is stored on a
SmartMedia card inserted into the Main Control Processor card (MCP) and contains six-
teen (16) Megabytes of NAND-Flash memory. The Smart Media card also provides a
backup customer database and a backup operating program. The system boots from a
256 Kbyte boot ROM and downloads the operating program into four megabytes of DRAM
on the Main Control Processor (MCP) card. The four megabytes of DRAM are increased to
8 megabytes with the addition of the Inter Processor communications Module (IPM) in an
expanded system. The customer database is stored in 0.5 megabytes of non-volatile
SRAM for a single cabinet system. This expands to 1.5 megabytes with the IPM installed
and to two megabytes with the addition of the optional LAN interface module (LAN).
MICROPROCESSORS
The iDCS 500 uses distributed processing. Its primary processor is a 16 bit (32 bit core)
Motorola MC68302 operating at a clock speed of 25 MHz on the MCP card. This provides
all the processing necessary for a single cabinet system. In a multi cabinet system the
secondary level of processing is on the SCP card for the first cabinet and on the LCP cards
for the expansion cabinets. These secondary processors are MC68302 processors run-
ning at 16 MHz and provide local control of each cabinet. Messaging between the pri-
mary and secondary processors is handled by a MC68302 processor running at 25 MHz
located on the Inter Processor communications Module (IPM) PCB. The tertiary level of
processing is done in the keysets. The digital keysets use a Hitachi H8 processor for data
communication within the system.

1.4 PROGRAMMING

The iDCS 500 is a self-configuring system. This means that immediately after applying
power, the iDCS 500 reads the types and locations of all installed interface cards and
keysets and assigns default data to them. This data provides for system operation within
a few minutes after applying power. All trunks and stations are assigned three or four digit
numbers according to the settings of the switches on the MCP card and the default num-
bering plan. This numbering plan is flexible and may be changed to suit customer re-
quirements. The installing technician customizes this default data to meet the end user's
requirements.
The system can be programmed from any LCD display keyset without interrupting sys-
tem operation. There are three levels of programming: technician, customer and station.
The technician level has access to all programs and can allow the customer access to
system programs as needed. Technician and customer access levels are controlled by a
different security passcodes and access procedure.
1.5