User guide

83
NT9X13LA — The AP/FP 68030 HPM-based CPU card provides the pro-
cessing capability for the application processor (AP) or the file processor
(FP). The capability to run foreign (not switch) operating systems is pro-
vided by the 68030 CPU on the card.
NT9X13MA or MB — These 20-MHz 68020 CPU SuperNode SE core
CM processor cards are high-performance microcomputer boards based on
a 68020 32-bit microprocessor. The NT9X13MA and MB is a recycled
board based on the NT9X13BC.
NT9X13NA and NB — The 16-MHz MC68020 CPU card, located on the
SNSE message switch (MS) shelf. The NT9X13NA card is similar to the
NT9X13Dx-series cards that are used for SN applications. It has 16 Mbyte
of DRAM and is used for SNSE applications. The NT9X13NB is an
upgrade from the NT9X13NA.
NT9X13PA — A SNSE ENET processor pack that is based upon the
NT9X13FA ENET processor but has specific SNSE firmware added.
NT9X14BB — This 6-Mbyte memory board equipped with error checking
and correction (ECC). It can be functionally divided into three separate
2-Mbyte memory modules. Each memory module is organized as a 2X40
array of 256X1 dynamic RAM (DRAM). Modules are further subdivided
into banks of 1X40 DRAMs. The 40-bit memory width is composed of 32
data bits, 7 check bits, and 1 parity bit. The NT9X14BB supports all types
of memory access. The synchronous memory bus should be used to access
the memory, while the asynchronous peripheral bus should be used to read
the (ID) PROM and to access the status registers. This board is not com-
patible with the address-bus (A-bus). The NT9X14DB is a 24-Mbyte
memory card and the NT9X14EA is a 96-Mbyte card.
NT9X15AA — The mapper card is part of the message switch. The map-
per circuit card changes addresses on the transaction bus (T-bus) from the
logical node ID used by the software to the physical address used by the
routing hardware.
NT9X17AA
— This is a message switch four-port card that provides a data
path for messaging between the message switch (MS) and four external
links. It transfers messages between four links and the transaction bus
(T-bus). The T-bus is a packet switch that can connect the links to any port
on the MS, or to the message switch processor (MSP). The links can be
one of two physical types: DS30 or DS512, and one of four logical types:
DS30, DMSX, DMSY, or Framer. The NT9X17AA can also, through its
on-card maintenance unit (CMU), be used to report the status of the links
and link data transfers to the MSP. The NT9X17AC provides a data path
for messaging between the message switch (MS) and four subrate (SR512)
optical links. It is paired with the NT9X62BA paddle board to interface
with the fiber link interface unit shelf (FLIS). The NT9X17BB = 32-port
card; NT9X17CA = 128-port card; and the NT9X17DA = 64-port card.
NT9X19AA & BA — The AA is a circuit pack filler and the BA is a pad-
dle board filler pack.
NT9X20AA — The DS512 paddle board is the fiber interface paddle board
used for messaging links between the computing module (CM) and mes-
sage switch (MS). The card interface on the backplane side is a shorting
bus (S-bus), running at an average rate of no more than 4.088 Mwords per
second.
NT9X20BB — The DS512 interface CM-MS EN-MS paddle board is a
DMS-bus fiber interface paddle board used for messaging links between
DMS-bus and the enhanced network (ENET). The card interface on the
backplane side is a shorting bus (S-bus), running at an average rate of no
more than 4.088 Mwords per second.
NT9X21AA or AB
— The CM-bus terminator paddle board contains ele-
ment identification (ID) PROM.
NT9X22AA or CA — The CM subsystem clock paddle board is used in
the computing module (CM) of the DMS-core.
NT9X23AA or BA — The DS30 4-port paddle board provides an interface
between a parallel 4.096-MHz backplane data bus and the twisted-pair
transmission cables associated with four DS30 links. Secondary functions
include transmitting out-of-band (OOB) data, receiving OOB, and provid-
ing a reference frame pulse extracted from the link. It is used in conjunc-
tion with the NT9X17 MS 4-port.
NT9X25AA or BA — The MS port expander paddle board connects the
S-bus of slot N to the S-bus of slot N+1, with an NT9X25BA (MS port
expander/terminator paddle board) terminating the chain. The NT9X25AA
is used between an NT9X20BB and an NT9X25BA in the S-bus daisy
chain. The NT9X25BA and NT9X25AA allows up to four NT9X17CAs to
share a single NT9X20BB. The NT9X25BA is the final paddle board in
the daisy chain, connecting the S-bus of slot N to the S-bus of slot N+1.
NT9X25BA also contains an identification (ID) PROM so that the system
can identify the card.
NT9X26AA/AB or CA — The remote terminal interface (RTIF) card
monitors and controls the DMS-100 SuperNode. It operates in a monitor-
ing mode when the SuperNode equipment is functioning properly. When
the equipment fails, a technician uses the remote system to restore service.
The remote system connects to the master DMS-Core, which reboots the
DMS-bus.