Sun Microsystems Sun Blade 1000 Service Manual page 334

TOD Time of day. A timekeeping integrated circuit.
TTL Transistor-transistor logic
UltraSPARC III The high performance central processing unit used in the Sun Blade 1000
workstation. This aluminum module uses SPARC V9, 64 bit reduced
instruction set computer (RISC) architecture.
UltraSPARC III Cu The high performance central processing unit used in the Sun Blade 2000
workstation. This copper module uses SPARC V9, 64 bit reduced instruction
set computer (RISC) architecture.
UltraSPARC port architecture. Provides graphics interconnection.
UPA
UTP Unshielded twisted-pair
VCC Voltage at the common collector (positive [+] electrical connection).
VIS Visual instruction set
VRMS Volts root-mean-square
10BASE-T An evolution of Ethernet technology that succeeded 10BASE5 and 10BASE2 as
the most popular method of physical network implementation. A 10BASE-T
network has a data transfer rate of 10 megabits per second and uses
unshielded twisted-pair wiring with RJ-45 modular telephone plugs and
sockets.
100BASE-T Also known as Fast Ethernet, an Ethernet technology that supports a data
transfer rate of 100 megabits per second over special grades of twisted-pair
wiring. 100BASE-T uses the same protocol as 10BASE-T. There are three
subsets of the 100BASE-T technology: 100BASE-TX defines digital transmission
over two pairs of shielded twisted-pair wire. 100BASE-T4 defines digital
transmission over four pairs of unshielded twisted-pair wire. 100BASE-TX
defines digital transmission over fiber-optic cable.
Glossary-4 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002