Functional description 995
The Bootstrap code resides in this 27C1000 EPROM and is executedon
power up or reset.
The Bootstrap code resides in this 27C1000 EPROM and is executedon
power up or reset.
Flash EPROM memory
Flash EPROM provides non-volatile storage forthe DDCH loadware which
minimizes the impact to sysload. The Flash EPROM provides an increase
in system service with a reduced delay after a brown-out, and faster testing
of a hardware pack after it is plugged in.
Flash EPROM provides non-volatile storage forthe DDCH loadware which
minimizes the impact to sysload. The Flash EPROM, in reference to current
devices, providesan increase in system service with a reduced delay after a
brown-out and faster testing of a hardware pack after it is plugged in.
Flash EPROM provides non-volatile storage forthe DDCH loadware which
minimizes the impact to sysload. The Flash EPROM provides an increase
in system service with a reduced delay after a brown-out, and faster testing
of a hardware pack after it is plugged in.
EEPROM memory
The DDCH uses a 1024 bit serial EEPROM for storing the Nortel product
code and a revision level. This information can be queried by the software.
The DDCH uses a 1,024 bit serial EEPROM for storing the NT product code
and a revision level. This information can be queried by software.
The DDCH uses a 1024 bit serial EEPROM for storing the Nortel Networks
product code and a revision level. This information can be queried by the
software.
Serial communication controller
The serial controller is the Zilog Z16C35 and is referenced as the Integrated
Controller (ISCC). The ISCC includes a flexible Bus Interface Unit (BIU)
and four Direct Memory Access (DMA) channels, one for each receive and
transmit. The DMA core of the ISCC controls the data transfer between
local RAM and the communication ports.
The serial controller is the Zilog Z16C35 and is referenced as the Integrated
Controller (ISCC). The ISCC includes a flexible Bus Interface Unit (BIU)
and four Direct Memory Access (DMA) channels, one for each receive and
transmit. The DMA core of the ISCC controls the data transfer between
local RAM and the communication ports.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.